Articles | Volume 15, issue 6
https://doi.org/10.5194/essd-15-2235-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-15-2235-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Data description paper
| 
02 Jun 2023
Data description paper |
| 02 Jun 2023
| 02 Jun 2023
LegacyClimate 1.0: a dataset of pollen-based climate reconstructions from 2594 Northern Hemisphere sites covering the last 30 kyr and beyond
Ulrike Herzschuh
CORRESPONDING AUTHOR
Polar Terrestrial Environmental Systems, Alfred Wegener Institute
Helmholtz Centre for Polar and Marine Research, Telegrafenberg A45, 14473
Potsdam, Germany
Institute of Environmental Science and Geography, University of
Potsdam, Karl-Liebknecht-Str. 24–25, 14476 Potsdam, Germany
Institute of Biochemistry and Biology, University of Potsdam,
Karl-Liebknecht-Str. 24–25, 14476 Potsdam, Germany
Thomas Böhmer
Polar Terrestrial Environmental Systems, Alfred Wegener Institute
Helmholtz Centre for Polar and Marine Research, Telegrafenberg A45, 14473
Potsdam, Germany
Chenzhi Li
Polar Terrestrial Environmental Systems, Alfred Wegener Institute
Helmholtz Centre for Polar and Marine Research, Telegrafenberg A45, 14473
Potsdam, Germany
Institute of Environmental Science and Geography, University of
Potsdam, Karl-Liebknecht-Str. 24–25, 14476 Potsdam, Germany
Manuel Chevalier
Institute of Geosciences, Sect. Meteorology, Rheinische
Friedrich-Wilhelms-Universität Bonn, Auf dem
Hügel 20, 53121 Bonn, Germany
Institute of Earth Surface Dynamics IDYST, Faculté des
Géosciences et l'Environnement, University of Lausanne, Bâtiment Géopolis, 1015 Lausanne, Switzerland
Raphaël Hébert
Polar Terrestrial Environmental Systems, Alfred Wegener Institute
Helmholtz Centre for Polar and Marine Research, Telegrafenberg A45, 14473
Potsdam, Germany
Anne Dallmeyer
Max Planck Institute for Meteorology, Bundesstraße 53, 20146
Hamburg, Germany
Xianyong Cao
Polar Terrestrial Environmental Systems, Alfred Wegener Institute
Helmholtz Centre for Polar and Marine Research, Telegrafenberg A45, 14473
Potsdam, Germany
Alpine Paleoecology and Human Adaptation Group (ALPHA), State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment (TPESRE), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, 100101 Beijing, China
Nancy H. Bigelow
Alaska Quaternary Center, University of Alaska Fairbanks,
Fairbanks, Alaska 99775, USA
Larisa Nazarova
Polar Terrestrial Environmental Systems, Alfred Wegener Institute
Helmholtz Centre for Polar and Marine Research, Telegrafenberg A45, 14473
Potsdam, Germany
Institute of Geology and Petroleum Technologies, Kazan Federal University, Kremlyovskaya Street 18, 420008 Kazan, Russia
Elena Y. Novenko
Faculty of Geography, Lomonosov Moscow State University, Leniskie
Gory 1, 119991 Moscow, Russia
Department of Quaternary Paleogeography, Institute of Geography
Russian Academy of Science, Staromonrtny Lane 29, 119017 Moscow, Russia
Jungjae Park
Department of Geography, Seoul National University, 1 Gwanak-ro,
Gwanak-gu, Seoul 08826, Republic of Korea
Institute for Korean Regional Studies, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
Odile Peyron
Institut des Sciences de l'Evolution de Montpellier,
Université de Montpellier, CNRS UMR 5554, Montpellier, France
Natalia A. Rudaya
PaleoData Lab, Institute of Archaeology and Ethnography, Siberian
Branch, Russian Academy of Sciences, Pr. Akademika 36 Lavrentieva 17, 630090
Novosibirsk, Russia
Biological Institute, Tomsk State University, Pr. Lenina, 26,
634050 Tomsk, Russia
Frank Schlütz
Institute for Pre- and Protohistoric Archaeology, University of Kiel, Germany, Johanna-Mestorf-Straße 2–6, 24118 Kiel, Germany
Department of Palynology and Climate Dynamics, Georg-August-University of Göttingen, Wilhelm Weber Str. 2a, 37073 Göttingen, Germany
Lyudmila S. Shumilovskikh
Department of Palynology and Climate Dynamics, Georg-August-University of Göttingen, Wilhelm Weber Str. 2a, 37073 Göttingen, Germany
Pavel E. Tarasov
Institute of Geological Sciences, Palaeontology Section, Freie Universität Berlin, Malteserstraße 74–100, Building D, 12249 Berlin, Germany
Yongbo Wang
College of Resource Environment and Tourism, Capital Normal
University, 105 West Third Ring Road North, 100048 Beijing, China
Ruilin Wen
Key Laboratory of Cenozoic Geology and Environment, Institute of
Geology and Geophysics, Chinese Academy of Sciences, 19 Beitucheng West
Road, Chaoyang District, 100029 Beijing, China
Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, 100044 Beijing, China
Qinghai Xu
School of Geographic Sciences, Hebei Normal University, 050024
Shijiazhuang, China
Zhuo Zheng
Guangdong Key Lab of Geodynamics and Geohazards, School of Earth
Sciences and Engineering, Sun Yat-sen University, 519082 Zhuhai, China
Southern Marine Science and Engineering Guangdong Laboratory
(Zhuhai), 519082 Zhuhai, China
Related authors
Lutz Schirrmeister, Margret C. Fuchs, Thomas Opel, Andrei Andreev, Frank Kienast, Andrea Schneider, Larisa Nazarova, Larisa Frolova, Svetlana Kuzmina, Tatiana Kuznetsova, Vladimir Tumskoy, Heidrun Matthes, Gerrit Lohmann, Guido Grosse, Viktor Kunitsky, Hanno Meyer, Heike H. Zimmermann, Ulrike Herzschuh, Thomas Böhmer, Stuart Umbo, Sevi Modestou, Sebastian F. M. Breitenbach, Anfisa Pismeniuk, Georg Schwamborn, Stephanie Kusch, and Sebastian Wetterich
Clim. Past, 21, 1143–1184, https://doi.org/10.5194/cp-21-1143-2025, https://doi.org/10.5194/cp-21-1143-2025, 2025
Short summary
Short summary
Geochronological, cryolithological, paleoecological, and modeling data reconstruct the Last Interglacial (LIG) climate around the New Siberian Islands and reveal significantly warmer conditions compared to today. The critical challenges in predicting future ecosystem responses lie in the fact that the land–ocean distribution during the LIG was markedly different from today, affecting the degree of continentality, which played a major role in modulating climate and ecosystem dynamics.
Ulrike Herzschuh, Thomas Böhmer, Weihan Jia, and Simeon Lisovski
EGUsphere, https://doi.org/10.5194/egusphere-2025-2678, https://doi.org/10.5194/egusphere-2025-2678, 2025
Short summary
Short summary
We introduce a new climate proxy based on plant DNA preserved in lake sediments. Validated with a large surface sample dataset and applied to a sediment record, this method provides more accurate and robust reconstructions of past climate change than traditional vegetation proxies like pollen, likely due to a higher taxonomic resolution and more localized signal.
Chenzhi Li, Anne Dallmeyer, Jian Ni, Manuel Chevalier, Matteo Willeit, Andrei A. Andreev, Xianyong Cao, Laura Schild, Birgit Heim, Mareike Wieczorek, and Ulrike Herzschuh
Clim. Past, 21, 1001–1024, https://doi.org/10.5194/cp-21-1001-2025, https://doi.org/10.5194/cp-21-1001-2025, 2025
Short summary
Short summary
We present global megabiome dynamics and distributions derived from pollen-based reconstructions over the last 21 000 years, which are suitable for the evaluation of Earth-system-model-based paleo-megabiome simulations. We identified strong deviations between pollen- and model-derived megabiome distributions in the circum-Arctic and Tibetan Plateau areas during the Last Glacial Maximum and early deglaciation and in northern Africa and the Mediterranean region during the Holocene.
Amelie Stieg, Boris K. Biskaborn, Ulrike Herzschuh, Andreas Marent, Jens Strauss, Dorothee Wilhelms-Dick, Luidmila A. Pestryakova, and Hanno Meyer
Biogeosciences, 22, 2327–2350, https://doi.org/10.5194/bg-22-2327-2025, https://doi.org/10.5194/bg-22-2327-2025, 2025
Short summary
Short summary
Globally, lake ecosystems have undergone significant shifts since the 1950s due to human activities. This study presents a unique ~220-year sediment record from a remote Siberian boreal lake, providing a multiproxy perspective on climate warming and anthropogenic air pollution. Analyses of diatom assemblages, diatom silicon isotopes, and carbon and nitrogen sediment proxies reveal complex biogeochemical interactions, highlighting anthropogenic influences even on remote water resources.
Laura Schild, Peter Ewald, Chenzhi Li, Raphaël Hébert, Thomas Laepple, and Ulrike Herzschuh
Earth Syst. Sci. Data, 17, 2007–2033, https://doi.org/10.5194/essd-17-2007-2025, https://doi.org/10.5194/essd-17-2007-2025, 2025
Short summary
Short summary
This study reconstructed vegetation and tree cover in the Northern Hemisphere from a harmonized dataset of pollen counts from sediment and peat cores for the past 14 000 years. A model was applied to correct for differences in pollen production between different plants, and modern remote-sensing forest cover was used to validate the reconstructed tree cover. Accurate data on past vegetation are invaluable for the investigation of vegetation–climate dynamics and the validation of vegetation models.
Simeon Lisovski, Alexandra Runge, Iuliia Shevtsova, Nele Landgraf, Anne Morgenstern, Ronald Reagan Okoth, Matthias Fuchs, Nikolay Lashchinskiy, Carl Stadie, Alison Beamish, Ulrike Herzschuh, Guido Grosse, and Birgit Heim
Earth Syst. Sci. Data, 17, 1707–1730, https://doi.org/10.5194/essd-17-1707-2025, https://doi.org/10.5194/essd-17-1707-2025, 2025
Short summary
Short summary
The Lena Delta is the largest river delta in the Arctic and represents a biodiversity hotspot. Here, we describe multiple field datasets and a detailed habitat classification map for the Lena Delta. We present context and methods of these openly available datasets and show how they can improve our understanding of the rapidly changing Arctic tundra system.
Amelie Stieg, Boris K. Biskaborn, Ulrike Herzschuh, Jens Strauss, Luidmila Pestryakova, and Hanno Meyer
Clim. Past, 20, 909–933, https://doi.org/10.5194/cp-20-909-2024, https://doi.org/10.5194/cp-20-909-2024, 2024
Short summary
Short summary
Siberia is impacted by recent climate warming and experiences extreme hydroclimate events. We present a 220-year-long sub-decadal stable oxygen isotope record of diatoms from Lake Khamra. Our analysis identifies winter precipitation as the key process impacting the isotope variability. Two possible hydroclimatic anomalies were found to coincide with significant changes in lake internal conditions and increased wildfire activity in the region.
Philip Meister, Anne Alexandre, Hannah Bailey, Philip Barker, Boris K. Biskaborn, Ellie Broadman, Rosine Cartier, Bernhard Chapligin, Martine Couapel, Jonathan R. Dean, Bernhard Diekmann, Poppy Harding, Andrew C. G. Henderson, Armand Hernandez, Ulrike Herzschuh, Svetlana S. Kostrova, Jack Lacey, Melanie J. Leng, Andreas Lücke, Anson W. Mackay, Eniko Katalin Magyari, Biljana Narancic, Cécile Porchier, Gunhild Rosqvist, Aldo Shemesh, Corinne Sonzogni, George E. A. Swann, Florence Sylvestre, and Hanno Meyer
Clim. Past, 20, 363–392, https://doi.org/10.5194/cp-20-363-2024, https://doi.org/10.5194/cp-20-363-2024, 2024
Short summary
Short summary
This paper presents the first comprehensive compilation of diatom oxygen isotope records in lake sediments (δ18OBSi), supported by lake basin parameters. We infer the spatial and temporal coverage of δ18OBSi records and discuss common hemispheric trends on centennial and millennial timescales. Key results are common patterns for hydrologically open lakes in Northern Hemisphere extratropical regions during the Holocene corresponding to known climatic epochs, i.e. the Holocene Thermal Maximum.
Ulrike Herzschuh, Thomas Böhmer, Manuel Chevalier, Raphaël Hébert, Anne Dallmeyer, Chenzhi Li, Xianyong Cao, Odile Peyron, Larisa Nazarova, Elena Y. Novenko, Jungjae Park, Natalia A. Rudaya, Frank Schlütz, Lyudmila S. Shumilovskikh, Pavel E. Tarasov, Yongbo Wang, Ruilin Wen, Qinghai Xu, and Zhuo Zheng
Clim. Past, 19, 1481–1506, https://doi.org/10.5194/cp-19-1481-2023, https://doi.org/10.5194/cp-19-1481-2023, 2023
Short summary
Short summary
A mismatch between model- and proxy-based Holocene climate change may partially originate from the poor spatial coverage of climate reconstructions. Here we investigate quantitative reconstructions of mean annual temperature and annual precipitation from 1908 pollen records in the Northern Hemisphere. Trends show strong latitudinal patterns and differ between (sub-)continents. Our work contributes to a better understanding of the global mean.
Manuel Chevalier, Anne Dallmeyer, Nils Weitzel, Chenzhi Li, Jean-Philippe Baudouin, Ulrike Herzschuh, Xianyong Cao, and Andreas Hense
Clim. Past, 19, 1043–1060, https://doi.org/10.5194/cp-19-1043-2023, https://doi.org/10.5194/cp-19-1043-2023, 2023
Short summary
Short summary
Data–data and data–model vegetation comparisons are commonly based on comparing single vegetation estimates. While this approach generates good results on average, reducing pollen assemblages to single single plant functional type (PFT) or biome estimates can oversimplify the vegetation signal. We propose using a multivariate metric, the Earth mover's distance (EMD), to include more details about the vegetation structure when performing such comparisons.
Boris K. Biskaborn, Amy Forster, Gregor Pfalz, Lyudmila A. Pestryakova, Kathleen Stoof-Leichsenring, Jens Strauss, Tim Kröger, and Ulrike Herzschuh
Biogeosciences, 20, 1691–1712, https://doi.org/10.5194/bg-20-1691-2023, https://doi.org/10.5194/bg-20-1691-2023, 2023
Short summary
Short summary
Lake sediment from the Russian Arctic was studied for microalgae and organic matter chemistry dated back to the last glacial 28 000 years. Species and chemistry responded to environmental changes such as the Younger Dryas cold event and the Holocene thermal maximum. Organic carbon accumulation correlated with rates of microalgae deposition only during warm episodes but not during the cold glacial.
Furong Li, Marie-José Gaillard, Xianyong Cao, Ulrike Herzschuh, Shinya Sugita, Jian Ni, Yan Zhao, Chengbang An, Xiaozhong Huang, Yu Li, Hongyan Liu, Aizhi Sun, and Yifeng Yao
Earth Syst. Sci. Data, 15, 95–112, https://doi.org/10.5194/essd-15-95-2023, https://doi.org/10.5194/essd-15-95-2023, 2023
Short summary
Short summary
The objective of this study is present the first gridded and temporally continuous quantitative plant-cover reconstruction for temperate and northern subtropical China over the last 12 millennia. The reconstructions are based on 94 pollen records and include estimates for 27 plant taxa, 10 plant functional types, and 3 land-cover types. The dataset is suitable for palaeoclimate modelling and the evaluation of simulated past vegetation cover and anthropogenic land-cover change from models.
Timon Miesner, Ulrike Herzschuh, Luidmila A. Pestryakova, Mareike Wieczorek, Evgenii S. Zakharov, Alexei I. Kolmogorov, Paraskovya V. Davydova, and Stefan Kruse
Earth Syst. Sci. Data, 14, 5695–5716, https://doi.org/10.5194/essd-14-5695-2022, https://doi.org/10.5194/essd-14-5695-2022, 2022
Short summary
Short summary
We present data which were collected on expeditions to the northeast of the Russian Federation. One table describes the 226 locations we visited during those expeditions, and the other describes 40 289 trees which we recorded at these locations. We found out that important information on the forest cannot be predicted precisely from satellites. Thus, for anyone interested in distant forests, it is important to go to there and take measurements or use data (as presented here).
Femke van Geffen, Birgit Heim, Frederic Brieger, Rongwei Geng, Iuliia A. Shevtsova, Luise Schulte, Simone M. Stuenzi, Nadine Bernhardt, Elena I. Troeva, Luidmila A. Pestryakova, Evgenii S. Zakharov, Bringfried Pflug, Ulrike Herzschuh, and Stefan Kruse
Earth Syst. Sci. Data, 14, 4967–4994, https://doi.org/10.5194/essd-14-4967-2022, https://doi.org/10.5194/essd-14-4967-2022, 2022
Short summary
Short summary
SiDroForest is an attempt to remedy data scarcity regarding vegetation data in the circumpolar region, whilst providing adjusted and labeled data for machine learning and upscaling practices. SiDroForest contains four datasets that include SfM point clouds, individually labeled trees, synthetic tree crowns and labeled Sentinel-2 patches that provide insights into the vegetation composition and forest structure of two important vegetation transition zones in Siberia, Russia.
Ulrike Herzschuh, Chenzhi Li, Thomas Böhmer, Alexander K. Postl, Birgit Heim, Andrei A. Andreev, Xianyong Cao, Mareike Wieczorek, and Jian Ni
Earth Syst. Sci. Data, 14, 3213–3227, https://doi.org/10.5194/essd-14-3213-2022, https://doi.org/10.5194/essd-14-3213-2022, 2022
Short summary
Short summary
Pollen preserved in environmental archives such as lake sediments and bogs are extensively used for reconstructions of past vegetation and climate. Here we present LegacyPollen 1.0, a dataset of 2831 fossil pollen records from all over the globe that were collected from publicly available databases. We harmonized the names of the pollen taxa so that all datasets can be jointly investigated. LegacyPollen 1.0 is available as an open-access dataset.
Ramesh Glückler, Rongwei Geng, Lennart Grimm, Izabella Baisheva, Ulrike Herzschuh, Kathleen R. Stoof-Leichsenring, Stefan Kruse, Andrei Andreev, Luidmila Pestryakova, and Elisabeth Dietze
EGUsphere, https://doi.org/10.5194/egusphere-2022-395, https://doi.org/10.5194/egusphere-2022-395, 2022
Preprint archived
Short summary
Short summary
Despite rapidly intensifying wildfire seasons in Siberian boreal forests, little is known about long-term relationships between changes in vegetation and shifts in wildfire activity. Using lake sediment proxies, we reconstruct such environmental changes over the past 10,800 years in Central Yakutia. We find that a more open forest may facilitate increased amounts of vegetation burning. The present-day dense larch forest might yet be mediating the current climate-driven wildfire intensification.
Chenzhi Li, Alexander K. Postl, Thomas Böhmer, Xianyong Cao, Andrew M. Dolman, and Ulrike Herzschuh
Earth Syst. Sci. Data, 14, 1331–1343, https://doi.org/10.5194/essd-14-1331-2022, https://doi.org/10.5194/essd-14-1331-2022, 2022
Short summary
Short summary
Here we present a global chronology framework of 2831 palynological records, including globally harmonized chronologies covering up to 273 000 years. A comparison with the original chronologies reveals a major improvement according to our assessment. Our chronology framework and revised chronologies will interest a broad geoscientific community, as it provides the opportunity to make use in synthesis studies of, for example, pollen-based vegetation and climate change.
Stefan Kruse, Simone M. Stuenzi, Julia Boike, Moritz Langer, Josias Gloy, and Ulrike Herzschuh
Geosci. Model Dev., 15, 2395–2422, https://doi.org/10.5194/gmd-15-2395-2022, https://doi.org/10.5194/gmd-15-2395-2022, 2022
Short summary
Short summary
We coupled established models for boreal forest (LAVESI) and permafrost dynamics (CryoGrid) in Siberia to investigate interactions of the diverse vegetation layer with permafrost soils. Our tests showed improved active layer depth estimations and newly included species growth according to their species-specific limits. We conclude that the new model system can be applied to simulate boreal forest dynamics and transitions under global warming and disturbances, expanding our knowledge.
Anne Dallmeyer, Martin Claussen, Stephan J. Lorenz, Michael Sigl, Matthew Toohey, and Ulrike Herzschuh
Clim. Past, 17, 2481–2513, https://doi.org/10.5194/cp-17-2481-2021, https://doi.org/10.5194/cp-17-2481-2021, 2021
Short summary
Short summary
Using the comprehensive Earth system model, MPI-ESM1.2, we explore the global Holocene vegetation changes and interpret them in terms of the Holocene climate change. The model results reveal that most of the Holocene vegetation transitions seen outside the high northern latitudes can be attributed to modifications in the intensity of the global summer monsoons.
Stuart A. Vyse, Ulrike Herzschuh, Gregor Pfalz, Lyudmila A. Pestryakova, Bernhard Diekmann, Norbert Nowaczyk, and Boris K. Biskaborn
Biogeosciences, 18, 4791–4816, https://doi.org/10.5194/bg-18-4791-2021, https://doi.org/10.5194/bg-18-4791-2021, 2021
Short summary
Short summary
Lakes act as important stores of organic carbon and inorganic sediment material. This study provides a first investigation into carbon and sediment accumulation and storage within an Arctic glacial lake from Far East Russia. It shows that major shifts are related to palaeoclimate variation that affects the development of the lake and its surrounding catchment. Spatial differences to other lake systems from other regions may reflect variability in processes controlled by latitude and altitude.
Ramesh Glückler, Ulrike Herzschuh, Stefan Kruse, Andrei Andreev, Stuart Andrew Vyse, Bettina Winkler, Boris K. Biskaborn, Luidmila Pestryakova, and Elisabeth Dietze
Biogeosciences, 18, 4185–4209, https://doi.org/10.5194/bg-18-4185-2021, https://doi.org/10.5194/bg-18-4185-2021, 2021
Short summary
Short summary
Data about past fire activity are very sparse in Siberia. This study presents a first high-resolution record of charcoal particles from lake sediments in boreal eastern Siberia. It indicates that current levels of charcoal accumulation are not unprecedented. While a recent increase in reconstructed fire frequency coincides with rising temperatures and increasing human activity, vegetation composition does not seem to be a major driver behind changes in the fire regime in the past two millennia.
Lydia Stolpmann, Caroline Coch, Anne Morgenstern, Julia Boike, Michael Fritz, Ulrike Herzschuh, Kathleen Stoof-Leichsenring, Yury Dvornikov, Birgit Heim, Josefine Lenz, Amy Larsen, Katey Walter Anthony, Benjamin Jones, Karen Frey, and Guido Grosse
Biogeosciences, 18, 3917–3936, https://doi.org/10.5194/bg-18-3917-2021, https://doi.org/10.5194/bg-18-3917-2021, 2021
Short summary
Short summary
Our new database summarizes DOC concentrations of 2167 water samples from 1833 lakes in permafrost regions across the Arctic to provide insights into linkages between DOC and environment. We found increasing lake DOC concentration with decreasing permafrost extent and higher DOC concentrations in boreal permafrost sites compared to tundra sites. Our study shows that DOC concentration depends on the environmental properties of a lake, especially permafrost extent, ecoregion, and vegetation.
Iuliia Shevtsova, Ulrike Herzschuh, Birgit Heim, Luise Schulte, Simone Stünzi, Luidmila A. Pestryakova, Evgeniy S. Zakharov, and Stefan Kruse
Biogeosciences, 18, 3343–3366, https://doi.org/10.5194/bg-18-3343-2021, https://doi.org/10.5194/bg-18-3343-2021, 2021
Short summary
Short summary
In the light of climate changes in subarctic regions, notable general increase in above-ground biomass for the past 15 years (2000 to 2017) was estimated along a tundra–taiga gradient of central Chukotka (Russian Far East). The greatest increase occurred in the northern taiga in the areas of larch closed-canopy forest expansion with Cajander larch as a main contributor. For the estimations, we used field data (taxa-separated plant biomass, 2018) and upscaled it based on Landsat satellite data.
Simone Maria Stuenzi, Julia Boike, William Cable, Ulrike Herzschuh, Stefan Kruse, Luidmila A. Pestryakova, Thomas Schneider von Deimling, Sebastian Westermann, Evgenii S. Zakharov, and Moritz Langer
Biogeosciences, 18, 343–365, https://doi.org/10.5194/bg-18-343-2021, https://doi.org/10.5194/bg-18-343-2021, 2021
Short summary
Short summary
Boreal forests in eastern Siberia are an essential component of global climate patterns. We use a physically based model and field measurements to study the interactions between forests, permanently frozen ground and the atmosphere. We find that forests exert a strong control on the thermal state of permafrost through changing snow cover dynamics and altering the surface energy balance, through absorbing most of the incoming solar radiation and suppressing below-canopy turbulent fluxes.
Mareike Wieczorek and Ulrike Herzschuh
Earth Syst. Sci. Data, 12, 3515–3528, https://doi.org/10.5194/essd-12-3515-2020, https://doi.org/10.5194/essd-12-3515-2020, 2020
Short summary
Short summary
Relative pollen productivity (RPP) estimates are used to estimate vegetation cover from pollen records. This study provides (i) a compilation of northern hemispheric RPP studies, allowing researchers to identify suitable sets for their study region and to identify data gaps for future research, and (ii) taxonomically harmonized, unified RPP sets for China, Europe, North America, and the whole Northern Hemisphere, generated from the available studies.
Basil A. S. Davis, Manuel Chevalier, Philipp Sommer, Vachel A. Carter, Walter Finsinger, Achille Mauri, Leanne N. Phelps, Marco Zanon, Roman Abegglen, Christine M. Åkesson, Francisca Alba-Sánchez, R. Scott Anderson, Tatiana G. Antipina, Juliana R. Atanassova, Ruth Beer, Nina I. Belyanina, Tatiana A. Blyakharchuk, Olga K. Borisova, Elissaveta Bozilova, Galina Bukreeva, M. Jane Bunting, Eleonora Clò, Daniele Colombaroli, Nathalie Combourieu-Nebout, Stéphanie Desprat, Federico Di Rita, Morteza Djamali, Kevin J. Edwards, Patricia L. Fall, Angelica Feurdean, William Fletcher, Assunta Florenzano, Giulia Furlanetto, Emna Gaceur, Arsenii T. Galimov, Mariusz Gałka, Iria García-Moreiras, Thomas Giesecke, Roxana Grindean, Maria A. Guido, Irina G. Gvozdeva, Ulrike Herzschuh, Kari L. Hjelle, Sergey Ivanov, Susanne Jahns, Vlasta Jankovska, Gonzalo Jiménez-Moreno, Monika Karpińska-Kołaczek, Ikuko Kitaba, Piotr Kołaczek, Elena G. Lapteva, Małgorzata Latałowa, Vincent Lebreton, Suzanne Leroy, Michelle Leydet, Darya A. Lopatina, José Antonio López-Sáez, André F. Lotter, Donatella Magri, Elena Marinova, Isabelle Matthias, Anastasia Mavridou, Anna Maria Mercuri, Jose Manuel Mesa-Fernández, Yuri A. Mikishin, Krystyna Milecka, Carlo Montanari, César Morales-Molino, Almut Mrotzek, Castor Muñoz Sobrino, Olga D. Naidina, Takeshi Nakagawa, Anne Birgitte Nielsen, Elena Y. Novenko, Sampson Panajiotidis, Nata K. Panova, Maria Papadopoulou, Heather S. Pardoe, Anna Pędziszewska, Tatiana I. Petrenko, María J. Ramos-Román, Cesare Ravazzi, Manfred Rösch, Natalia Ryabogina, Silvia Sabariego Ruiz, J. Sakari Salonen, Tatyana V. Sapelko, James E. Schofield, Heikki Seppä, Lyudmila Shumilovskikh, Normunds Stivrins, Philipp Stojakowits, Helena Svobodova Svitavska, Joanna Święta-Musznicka, Ioan Tantau, Willy Tinner, Kazimierz Tobolski, Spassimir Tonkov, Margarita Tsakiridou, Verushka Valsecchi, Oksana G. Zanina, and Marcelina Zimny
Earth Syst. Sci. Data, 12, 2423–2445, https://doi.org/10.5194/essd-12-2423-2020, https://doi.org/10.5194/essd-12-2423-2020, 2020
Short summary
Short summary
The Eurasian Modern Pollen Database (EMPD) contains pollen counts and associated metadata for 8134 modern pollen samples from across the Eurasian region. The EMPD is part of, and complementary to, the European Pollen Database (EPD) which contains data on fossil pollen found in Late Quaternary sedimentary archives. The purpose of the EMPD is to provide calibration datasets and other data to support palaeoecological research on past climates and vegetation cover over the Quaternary period.
Heike H. Zimmermann, Kathleen R. Stoof-Leichsenring, Stefan Kruse, Juliane Müller, Ruediger Stein, Ralf Tiedemann, and Ulrike Herzschuh
Ocean Sci., 16, 1017–1032, https://doi.org/10.5194/os-16-1017-2020, https://doi.org/10.5194/os-16-1017-2020, 2020
Short summary
Short summary
This study targets high-resolution, diatom-specific sedimentary ancient DNA using a DNA metabarcoding approach. Diatom DNA has been preserved with substantial taxonomic richness in the eastern Fram Strait over the past 30 000 years with taxonomic composition being dominated by cold-water and sea-ice-associated diatoms. Taxonomic reorganisations took place after the Last Glacial Maximum and after the Younger Dryas. Peak proportions of pennate diatoms might indicate past sea-ice presence.
Lucas Dugerdil, Sébastien Joannin, Odile Peyron, Shafag Bayramova, Xiaozhong Huang, Fahu Chen, Dilfuza Egamberdieva, Jakhongir Alimov, Bazartseren Boldgiv, Amy Cromartie, Juzhi Hou, Lilit Sahakyan, Khachatur Meliksetian, Salomé Ansanay-Alex, Rafig Safarov, Imran Muradi, Shabnam Isayeva, Shehla Mirzayeva, Elshan Abdullayev, Sayyara Ibadullayeva, Parvana Garakhani, and Guillemette Ménot
EGUsphere, https://doi.org/10.5194/egusphere-2025-3658, https://doi.org/10.5194/egusphere-2025-3658, 2025
This preprint is open for discussion and under review for Biogeosciences (BG).
Short summary
Short summary
Branched GDGTs are bacterial lipids preserved in soils and sediments, used as climate proxies. This study presents the Arid Central Asian brGDGT surface database to assess their reliability in drylands. Results show that salinity, sample type, pH, and aridity strongly influence brGDGT signals, limiting temperature reconstructions. Refined calibrations improve reconstruction accuracy, and methylation index differences may indicate aridity variations.
Lucy Timbrell, James Blinkhorn, Margherita Colucci, Michela Leonardi, Manuel Chevalier, Andrea Vittorio Pozzi, Matt Grove, Eleanor Scerri, and Andrea Manica
Clim. Past, 21, 1185–1208, https://doi.org/10.5194/cp-21-1185-2025, https://doi.org/10.5194/cp-21-1185-2025, 2025
Short summary
Short summary
Scientists study past climate change using proxies (e.g. pollen) and models. Proxies offer detailed snapshots but are limited in number, while models provide broader coverage but at low resolution. Models are typically downscaled to 30 arcmin, but it is unclear if this is sufficient. We found that increasing models to 5 arcmin does not improve their coherence with climate reconstructed from pollen data. Optimal model resolution depends on research need, balancing detail with error.
Fang Tian, Weiyu Cao, Xiaohan Liu, Zixin Liu, and Xianyong Cao
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2025-242, https://doi.org/10.5194/essd-2025-242, 2025
Preprint under review for ESSD
Short summary
Short summary
We completed a modern pollen dataset obtained from 90 lakes from the Tibetan Plateau (TP), and integrated it with previous modern lacustrine pollen datasets. The comprehensive modern pollen dataset covers the full range of climatic gradients across the TP and all vegetation types. The modern pollen dataset has good predictive power in estimating net primary production and annual precipitation.
Lutz Schirrmeister, Margret C. Fuchs, Thomas Opel, Andrei Andreev, Frank Kienast, Andrea Schneider, Larisa Nazarova, Larisa Frolova, Svetlana Kuzmina, Tatiana Kuznetsova, Vladimir Tumskoy, Heidrun Matthes, Gerrit Lohmann, Guido Grosse, Viktor Kunitsky, Hanno Meyer, Heike H. Zimmermann, Ulrike Herzschuh, Thomas Böhmer, Stuart Umbo, Sevi Modestou, Sebastian F. M. Breitenbach, Anfisa Pismeniuk, Georg Schwamborn, Stephanie Kusch, and Sebastian Wetterich
Clim. Past, 21, 1143–1184, https://doi.org/10.5194/cp-21-1143-2025, https://doi.org/10.5194/cp-21-1143-2025, 2025
Short summary
Short summary
Geochronological, cryolithological, paleoecological, and modeling data reconstruct the Last Interglacial (LIG) climate around the New Siberian Islands and reveal significantly warmer conditions compared to today. The critical challenges in predicting future ecosystem responses lie in the fact that the land–ocean distribution during the LIG was markedly different from today, affecting the degree of continentality, which played a major role in modulating climate and ecosystem dynamics.
Ulrike Herzschuh, Thomas Böhmer, Weihan Jia, and Simeon Lisovski
EGUsphere, https://doi.org/10.5194/egusphere-2025-2678, https://doi.org/10.5194/egusphere-2025-2678, 2025
Short summary
Short summary
We introduce a new climate proxy based on plant DNA preserved in lake sediments. Validated with a large surface sample dataset and applied to a sediment record, this method provides more accurate and robust reconstructions of past climate change than traditional vegetation proxies like pollen, likely due to a higher taxonomic resolution and more localized signal.
Chenzhi Li, Anne Dallmeyer, Jian Ni, Manuel Chevalier, Matteo Willeit, Andrei A. Andreev, Xianyong Cao, Laura Schild, Birgit Heim, Mareike Wieczorek, and Ulrike Herzschuh
Clim. Past, 21, 1001–1024, https://doi.org/10.5194/cp-21-1001-2025, https://doi.org/10.5194/cp-21-1001-2025, 2025
Short summary
Short summary
We present global megabiome dynamics and distributions derived from pollen-based reconstructions over the last 21 000 years, which are suitable for the evaluation of Earth-system-model-based paleo-megabiome simulations. We identified strong deviations between pollen- and model-derived megabiome distributions in the circum-Arctic and Tibetan Plateau areas during the Last Glacial Maximum and early deglaciation and in northern Africa and the Mediterranean region during the Holocene.
Amelie Stieg, Boris K. Biskaborn, Ulrike Herzschuh, Andreas Marent, Jens Strauss, Dorothee Wilhelms-Dick, Luidmila A. Pestryakova, and Hanno Meyer
Biogeosciences, 22, 2327–2350, https://doi.org/10.5194/bg-22-2327-2025, https://doi.org/10.5194/bg-22-2327-2025, 2025
Short summary
Short summary
Globally, lake ecosystems have undergone significant shifts since the 1950s due to human activities. This study presents a unique ~220-year sediment record from a remote Siberian boreal lake, providing a multiproxy perspective on climate warming and anthropogenic air pollution. Analyses of diatom assemblages, diatom silicon isotopes, and carbon and nitrogen sediment proxies reveal complex biogeochemical interactions, highlighting anthropogenic influences even on remote water resources.
Laura Schild, Peter Ewald, Chenzhi Li, Raphaël Hébert, Thomas Laepple, and Ulrike Herzschuh
Earth Syst. Sci. Data, 17, 2007–2033, https://doi.org/10.5194/essd-17-2007-2025, https://doi.org/10.5194/essd-17-2007-2025, 2025
Short summary
Short summary
This study reconstructed vegetation and tree cover in the Northern Hemisphere from a harmonized dataset of pollen counts from sediment and peat cores for the past 14 000 years. A model was applied to correct for differences in pollen production between different plants, and modern remote-sensing forest cover was used to validate the reconstructed tree cover. Accurate data on past vegetation are invaluable for the investigation of vegetation–climate dynamics and the validation of vegetation models.
Simeon Lisovski, Alexandra Runge, Iuliia Shevtsova, Nele Landgraf, Anne Morgenstern, Ronald Reagan Okoth, Matthias Fuchs, Nikolay Lashchinskiy, Carl Stadie, Alison Beamish, Ulrike Herzschuh, Guido Grosse, and Birgit Heim
Earth Syst. Sci. Data, 17, 1707–1730, https://doi.org/10.5194/essd-17-1707-2025, https://doi.org/10.5194/essd-17-1707-2025, 2025
Short summary
Short summary
The Lena Delta is the largest river delta in the Arctic and represents a biodiversity hotspot. Here, we describe multiple field datasets and a detailed habitat classification map for the Lena Delta. We present context and methods of these openly available datasets and show how they can improve our understanding of the rapidly changing Arctic tundra system.
Léa d'Oliveira, Sébastien Joannin, Guillemette Ménot, Nathalie Combourieu-Nebout, Lucas Dugerdil, Marion Blache, Mary Robles, Assunta Florenzano, Alessia Masi, Anna Maria Mercuri, Laura Sadori, Marie Balasse, and Odile Peyron
EGUsphere, https://doi.org/10.5194/egusphere-2025-1106, https://doi.org/10.5194/egusphere-2025-1106, 2025
Short summary
Short summary
We studied climate change in the central Mediterranean during the Holocene by analysing 38 pollen records. Several methods were used to obtain reliable results on seasonal temperatures and precipitation. Our results show that, during the Holocene, summer temperatures were colder in the south and warmer in the north, with wetter winters and drier summers, especially in the south. Unlike winter conditions, summers ones did not follow variations in insolation, suggesting other factors.
Amy Cromartie, Cindy De Jonge, Guillemette Ménot, Mary Robles, Lucas Dugerdil, Odile Peyron, Marta Rodrigo-Gámiz, Jon Camuera, Maria Jose Ramos-Roman, Gonzalo Jiménez-Moreno, Claude Colombié, Lilit Sahakyan, and Sébastien Joannin
EGUsphere, https://doi.org/10.5194/egusphere-2025-526, https://doi.org/10.5194/egusphere-2025-526, 2025
Short summary
Short summary
BrGDGT are a molecular biomarker utilized for paleotemperature reconstructions. One issue, however, with utilizing brGDGTs is that the distribution differs in relation to sediment environments (i.e., peat, lake, soil) which change overtime. We utilize the probability estimate outputs from five machine learning algorithms, and a new modern brGDGTs database to track change and apply these models’ to two downcore records utilizing pollen and non-pollen polymorphs to confirm the model’s accuracy.
Dael Sassoon, Nathalie Combourieu-Nebout, Odile Peyron, Adele Bertini, Francesco Toti, Vincent Lebreton, and Marie-Hélène Moncel
Clim. Past, 21, 489–515, https://doi.org/10.5194/cp-21-489-2025, https://doi.org/10.5194/cp-21-489-2025, 2025
Short summary
Short summary
Climatic reconstructions of Marine Isotope Stages (MISs) 19, 11, and 5 and the current interglacial (MIS 1) based on pollen data from a marine core (Alboran Sea) show that, compared with MIS 1, MIS 19 was colder and highly variable, MIS 11 was longer and more stable, and MIS 5 was warmer. There is no real equivalent to the current interglacial, but past interglacials give insights into the sensitivity of the southwestern Mediterranean to global climatic changes in conditions similar to MIS 1.
Mary Robles, Valérie Andrieu, Pierre Rochette, Séverine Fauquette, Odile Peyron, François Demory, Oktay Parlak, Eliane Charrat, Belinda Gambin, and Mehmet Cihat Alçiçek
EGUsphere, https://doi.org/10.5194/egusphere-2025-174, https://doi.org/10.5194/egusphere-2025-174, 2025
Short summary
Short summary
This study aims to characterize the vegetation and lake dynamics based on pollen and Non-Pollen Palynomorph (NPP) proxies, to quantitatively reconstruct climate changes using a multimethod approach and to morphologically characterize the large pollen grains of Poaceae (Cerealia-type).
Mengna Liao, Kai Li, Yili Jin, Lina Liu, Xianyong Cao, and Jian Ni
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2025-71, https://doi.org/10.5194/essd-2025-71, 2025
Revised manuscript under review for ESSD
Short summary
Short summary
We present a modern pollen dataset of 555 pollen count records from 307 sites on the Tibetan Plateau (28–40° N and 75–103° E). Our open-access dataset holds various potential applications in paleoecological and paleoclimatic researches. It offers a scientific foundation for reconstructing changes in climate and vegetation over time and enables the assessment of the reliability of pollen assemblages in representing the dynamics of vegetation cover, functional traits, and plant diversity.
Mara Y. McPartland, Thomas Münch, Andrew M. Dolman, Raphaël Hébert, and Thomas Laepple
Clim. Past Discuss., https://doi.org/10.5194/cp-2024-73, https://doi.org/10.5194/cp-2024-73, 2024
Preprint under review for CP
Short summary
Short summary
Paleoclimate proxy records contain a combination of climate signals and non-climatic noise. This noise can affect year-to-year variations, or introduce uncertainty on medium and long timescales. Proxies contain different types, or "colors" of noise stemming from the diverse physical and biological processes that go into their creation. We show how non-climatic noise affects tree rings, corals and ice cores. We aim to improve representations of noise in paleoclimate research activities.
Amelie Stieg, Boris K. Biskaborn, Ulrike Herzschuh, Jens Strauss, Luidmila Pestryakova, and Hanno Meyer
Clim. Past, 20, 909–933, https://doi.org/10.5194/cp-20-909-2024, https://doi.org/10.5194/cp-20-909-2024, 2024
Short summary
Short summary
Siberia is impacted by recent climate warming and experiences extreme hydroclimate events. We present a 220-year-long sub-decadal stable oxygen isotope record of diatoms from Lake Khamra. Our analysis identifies winter precipitation as the key process impacting the isotope variability. Two possible hydroclimatic anomalies were found to coincide with significant changes in lake internal conditions and increased wildfire activity in the region.
Philip Meister, Anne Alexandre, Hannah Bailey, Philip Barker, Boris K. Biskaborn, Ellie Broadman, Rosine Cartier, Bernhard Chapligin, Martine Couapel, Jonathan R. Dean, Bernhard Diekmann, Poppy Harding, Andrew C. G. Henderson, Armand Hernandez, Ulrike Herzschuh, Svetlana S. Kostrova, Jack Lacey, Melanie J. Leng, Andreas Lücke, Anson W. Mackay, Eniko Katalin Magyari, Biljana Narancic, Cécile Porchier, Gunhild Rosqvist, Aldo Shemesh, Corinne Sonzogni, George E. A. Swann, Florence Sylvestre, and Hanno Meyer
Clim. Past, 20, 363–392, https://doi.org/10.5194/cp-20-363-2024, https://doi.org/10.5194/cp-20-363-2024, 2024
Short summary
Short summary
This paper presents the first comprehensive compilation of diatom oxygen isotope records in lake sediments (δ18OBSi), supported by lake basin parameters. We infer the spatial and temporal coverage of δ18OBSi records and discuss common hemispheric trends on centennial and millennial timescales. Key results are common patterns for hydrologically open lakes in Northern Hemisphere extratropical regions during the Holocene corresponding to known climatic epochs, i.e. the Holocene Thermal Maximum.
Xiaohuan Hou, Nannan Wang, Zhe Sun, Kan Yuan, Xianyong Cao, and Juzhi Hou
Clim. Past, 20, 335–348, https://doi.org/10.5194/cp-20-335-2024, https://doi.org/10.5194/cp-20-335-2024, 2024
Short summary
Short summary
We present an ice-free season temperature based on brGDGTs over last 15 kyr on the eastern Tibetan Plateau (TP). The result shows that Holocene Thermal Maximum occurred during 8–3.5 ka, which lags behind pollen-based temperature recorded in same core, indicating a significant seasonal bias between different proxies. We also investigated previously published brGDGT-based temperatures on the TP to determine the pattern of Holocene temperature changes and possible reasons for the diverse records.
Fabio Oriani, Gregoire Mariethoz, and Manuel Chevalier
Earth Syst. Sci. Data, 16, 731–742, https://doi.org/10.5194/essd-16-731-2024, https://doi.org/10.5194/essd-16-731-2024, 2024
Short summary
Short summary
Modern and fossil pollen data contain precious information for reconstructing the climate and environment of the past. However, these data are only achieved for single locations with no continuity in space. We present here a systematic atlas of 194 digital maps containing the spatial estimation of contemporary pollen presence over Europe. This dataset constitutes a free and ready-to-use tool to study climate, biodiversity, and environment in time and space.
Léa d'Oliveira, Lucas Dugerdil, Guillemette Ménot, Allowen Evin, Serge D. Muller, Salomé Ansanay-Alex, Julien Azuara, Colline Bonnet, Laurent Bremond, Mehmet Shah, and Odile Peyron
Clim. Past, 19, 2127–2156, https://doi.org/10.5194/cp-19-2127-2023, https://doi.org/10.5194/cp-19-2127-2023, 2023
Short summary
Short summary
In southern Europe, Holocene climate variability is characterized by a strong heterogeneity whose patterns are still poorly understood. Here, a multi-proxy approach (pollen and biomarkers) is applied to the Canroute sequence to reconstruct the climatic variation over the last 15 000 years in southern Massif Central, France. Results reveal that reconstructions of regional climate trends notably differ depending on proxies and sites, notably concerning the presence of a Holocene thermal maximum.
Anne Dallmeyer, Anneli Poska, Laurent Marquer, Andrea Seim, and Marie-José Gaillard
Clim. Past, 19, 1531–1557, https://doi.org/10.5194/cp-19-1531-2023, https://doi.org/10.5194/cp-19-1531-2023, 2023
Short summary
Short summary
We compare past tree cover changes in Europe during the last 8000 years simulated with two dynamic global vegetation models and inferred from pollen data. The major model–data mismatch is related to the much earlier onset of anthropogenic deforestation in the data compared to the prescribed land use in the models. We show that land use, and not climate, is the main driver of the Holocene forest decline. The model–data agreement depends on the model tuning, challenging model–data comparisons.
Ulrike Herzschuh, Thomas Böhmer, Manuel Chevalier, Raphaël Hébert, Anne Dallmeyer, Chenzhi Li, Xianyong Cao, Odile Peyron, Larisa Nazarova, Elena Y. Novenko, Jungjae Park, Natalia A. Rudaya, Frank Schlütz, Lyudmila S. Shumilovskikh, Pavel E. Tarasov, Yongbo Wang, Ruilin Wen, Qinghai Xu, and Zhuo Zheng
Clim. Past, 19, 1481–1506, https://doi.org/10.5194/cp-19-1481-2023, https://doi.org/10.5194/cp-19-1481-2023, 2023
Short summary
Short summary
A mismatch between model- and proxy-based Holocene climate change may partially originate from the poor spatial coverage of climate reconstructions. Here we investigate quantitative reconstructions of mean annual temperature and annual precipitation from 1908 pollen records in the Northern Hemisphere. Trends show strong latitudinal patterns and differ between (sub-)continents. Our work contributes to a better understanding of the global mean.
Manuel Chevalier, Anne Dallmeyer, Nils Weitzel, Chenzhi Li, Jean-Philippe Baudouin, Ulrike Herzschuh, Xianyong Cao, and Andreas Hense
Clim. Past, 19, 1043–1060, https://doi.org/10.5194/cp-19-1043-2023, https://doi.org/10.5194/cp-19-1043-2023, 2023
Short summary
Short summary
Data–data and data–model vegetation comparisons are commonly based on comparing single vegetation estimates. While this approach generates good results on average, reducing pollen assemblages to single single plant functional type (PFT) or biome estimates can oversimplify the vegetation signal. We propose using a multivariate metric, the Earth mover's distance (EMD), to include more details about the vegetation structure when performing such comparisons.
Boris K. Biskaborn, Amy Forster, Gregor Pfalz, Lyudmila A. Pestryakova, Kathleen Stoof-Leichsenring, Jens Strauss, Tim Kröger, and Ulrike Herzschuh
Biogeosciences, 20, 1691–1712, https://doi.org/10.5194/bg-20-1691-2023, https://doi.org/10.5194/bg-20-1691-2023, 2023
Short summary
Short summary
Lake sediment from the Russian Arctic was studied for microalgae and organic matter chemistry dated back to the last glacial 28 000 years. Species and chemistry responded to environmental changes such as the Younger Dryas cold event and the Holocene thermal maximum. Organic carbon accumulation correlated with rates of microalgae deposition only during warm episodes but not during the cold glacial.
Mary Robles, Odile Peyron, Guillemette Ménot, Elisabetta Brugiapaglia, Sabine Wulf, Oona Appelt, Marion Blache, Boris Vannière, Lucas Dugerdil, Bruno Paura, Salomé Ansanay-Alex, Amy Cromartie, Laurent Charlet, Stephane Guédron, Jacques-Louis de Beaulieu, and Sébastien Joannin
Clim. Past, 19, 493–515, https://doi.org/10.5194/cp-19-493-2023, https://doi.org/10.5194/cp-19-493-2023, 2023
Short summary
Short summary
Quantitative climate reconstructions based on pollen and brGDGTs reveal, for the Late Glacial, a warm Bølling–Allerød and a marked cold Younger Dryas in Italy, showing no latitudinal differences in terms of temperatures across Italy. In terms of precipitation, no latitudinal differences are recorded during the Bølling–Allerød, whereas 40–42° N appears as a key junction point between wetter conditions in southern Italy and drier conditions in northern Italy during the Younger Dryas.
Furong Li, Marie-José Gaillard, Xianyong Cao, Ulrike Herzschuh, Shinya Sugita, Jian Ni, Yan Zhao, Chengbang An, Xiaozhong Huang, Yu Li, Hongyan Liu, Aizhi Sun, and Yifeng Yao
Earth Syst. Sci. Data, 15, 95–112, https://doi.org/10.5194/essd-15-95-2023, https://doi.org/10.5194/essd-15-95-2023, 2023
Short summary
Short summary
The objective of this study is present the first gridded and temporally continuous quantitative plant-cover reconstruction for temperate and northern subtropical China over the last 12 millennia. The reconstructions are based on 94 pollen records and include estimates for 27 plant taxa, 10 plant functional types, and 3 land-cover types. The dataset is suitable for palaeoclimate modelling and the evaluation of simulated past vegetation cover and anthropogenic land-cover change from models.
Timon Miesner, Ulrike Herzschuh, Luidmila A. Pestryakova, Mareike Wieczorek, Evgenii S. Zakharov, Alexei I. Kolmogorov, Paraskovya V. Davydova, and Stefan Kruse
Earth Syst. Sci. Data, 14, 5695–5716, https://doi.org/10.5194/essd-14-5695-2022, https://doi.org/10.5194/essd-14-5695-2022, 2022
Short summary
Short summary
We present data which were collected on expeditions to the northeast of the Russian Federation. One table describes the 226 locations we visited during those expeditions, and the other describes 40 289 trees which we recorded at these locations. We found out that important information on the forest cannot be predicted precisely from satellites. Thus, for anyone interested in distant forests, it is important to go to there and take measurements or use data (as presented here).
Femke van Geffen, Birgit Heim, Frederic Brieger, Rongwei Geng, Iuliia A. Shevtsova, Luise Schulte, Simone M. Stuenzi, Nadine Bernhardt, Elena I. Troeva, Luidmila A. Pestryakova, Evgenii S. Zakharov, Bringfried Pflug, Ulrike Herzschuh, and Stefan Kruse
Earth Syst. Sci. Data, 14, 4967–4994, https://doi.org/10.5194/essd-14-4967-2022, https://doi.org/10.5194/essd-14-4967-2022, 2022
Short summary
Short summary
SiDroForest is an attempt to remedy data scarcity regarding vegetation data in the circumpolar region, whilst providing adjusted and labeled data for machine learning and upscaling practices. SiDroForest contains four datasets that include SfM point clouds, individually labeled trees, synthetic tree crowns and labeled Sentinel-2 patches that provide insights into the vegetation composition and forest structure of two important vegetation transition zones in Siberia, Russia.
Nannan Wang, Lina Liu, Xiaohuan Hou, Yanrong Zhang, Haicheng Wei, and Xianyong Cao
Clim. Past, 18, 2381–2399, https://doi.org/10.5194/cp-18-2381-2022, https://doi.org/10.5194/cp-18-2381-2022, 2022
Short summary
Short summary
We reconstructed the vegetation and climate change since the last 14.2 ka BP from a fossil pollen record together with multiple proxies (grain size, contents of total organic carbon and total nitrogen) on the northeast Tibetan Plateau. The results reveal that an arid climate occurs in the early Holocene and the vegetation could be disturbed by human activities to some extent after ca. 0.24 ka BP (1710 CE).
Ulrike Herzschuh, Chenzhi Li, Thomas Böhmer, Alexander K. Postl, Birgit Heim, Andrei A. Andreev, Xianyong Cao, Mareike Wieczorek, and Jian Ni
Earth Syst. Sci. Data, 14, 3213–3227, https://doi.org/10.5194/essd-14-3213-2022, https://doi.org/10.5194/essd-14-3213-2022, 2022
Short summary
Short summary
Pollen preserved in environmental archives such as lake sediments and bogs are extensively used for reconstructions of past vegetation and climate. Here we present LegacyPollen 1.0, a dataset of 2831 fossil pollen records from all over the globe that were collected from publicly available databases. We harmonized the names of the pollen taxa so that all datasets can be jointly investigated. LegacyPollen 1.0 is available as an open-access dataset.
Ramesh Glückler, Rongwei Geng, Lennart Grimm, Izabella Baisheva, Ulrike Herzschuh, Kathleen R. Stoof-Leichsenring, Stefan Kruse, Andrei Andreev, Luidmila Pestryakova, and Elisabeth Dietze
EGUsphere, https://doi.org/10.5194/egusphere-2022-395, https://doi.org/10.5194/egusphere-2022-395, 2022
Preprint archived
Short summary
Short summary
Despite rapidly intensifying wildfire seasons in Siberian boreal forests, little is known about long-term relationships between changes in vegetation and shifts in wildfire activity. Using lake sediment proxies, we reconstruct such environmental changes over the past 10,800 years in Central Yakutia. We find that a more open forest may facilitate increased amounts of vegetation burning. The present-day dense larch forest might yet be mediating the current climate-driven wildfire intensification.
Manuel Chevalier
Clim. Past, 18, 821–844, https://doi.org/10.5194/cp-18-821-2022, https://doi.org/10.5194/cp-18-821-2022, 2022
Short summary
Short summary
This paper introduces a new R package to perform quantitative climate reconstructions from palaeoecological datasets. The package includes calibration data for several commonly used terrestrial (e.g. pollen) and marine (e.g. foraminifers) climate proxies to enable its use in various environments globally. In addition, the built-in graphical diagnostic tools simplify the evaluation and interpretations of the results. No coding skills are required to use crestr.
Esther Githumbi, Ralph Fyfe, Marie-Jose Gaillard, Anna-Kari Trondman, Florence Mazier, Anne-Birgitte Nielsen, Anneli Poska, Shinya Sugita, Jessie Woodbridge, Julien Azuara, Angelica Feurdean, Roxana Grindean, Vincent Lebreton, Laurent Marquer, Nathalie Nebout-Combourieu, Miglė Stančikaitė, Ioan Tanţău, Spassimir Tonkov, Lyudmila Shumilovskikh, and LandClimII data contributors
Earth Syst. Sci. Data, 14, 1581–1619, https://doi.org/10.5194/essd-14-1581-2022, https://doi.org/10.5194/essd-14-1581-2022, 2022
Short summary
Short summary
Reconstruction of past land cover is necessary for the study of past climate–land cover interactions and the evaluation of climate models and land-use scenarios. We used 1128 available pollen records from across Europe covering the last 11 700 years in the REVEALS model to calculate percentage cover and associated standard errors for 31 taxa, 12 plant functional types and 3 land-cover types. REVEALS results are reliant on the quality of the input datasets.
Chenzhi Li, Alexander K. Postl, Thomas Böhmer, Xianyong Cao, Andrew M. Dolman, and Ulrike Herzschuh
Earth Syst. Sci. Data, 14, 1331–1343, https://doi.org/10.5194/essd-14-1331-2022, https://doi.org/10.5194/essd-14-1331-2022, 2022
Short summary
Short summary
Here we present a global chronology framework of 2831 palynological records, including globally harmonized chronologies covering up to 273 000 years. A comparison with the original chronologies reveals a major improvement according to our assessment. Our chronology framework and revised chronologies will interest a broad geoscientific community, as it provides the opportunity to make use in synthesis studies of, for example, pollen-based vegetation and climate change.
Stefan Kruse, Simone M. Stuenzi, Julia Boike, Moritz Langer, Josias Gloy, and Ulrike Herzschuh
Geosci. Model Dev., 15, 2395–2422, https://doi.org/10.5194/gmd-15-2395-2022, https://doi.org/10.5194/gmd-15-2395-2022, 2022
Short summary
Short summary
We coupled established models for boreal forest (LAVESI) and permafrost dynamics (CryoGrid) in Siberia to investigate interactions of the diverse vegetation layer with permafrost soils. Our tests showed improved active layer depth estimations and newly included species growth according to their species-specific limits. We conclude that the new model system can be applied to simulate boreal forest dynamics and transitions under global warming and disturbances, expanding our knowledge.
Sandy P. Harrison, Roberto Villegas-Diaz, Esmeralda Cruz-Silva, Daniel Gallagher, David Kesner, Paul Lincoln, Yicheng Shen, Luke Sweeney, Daniele Colombaroli, Adam Ali, Chéïma Barhoumi, Yves Bergeron, Tatiana Blyakharchuk, Přemysl Bobek, Richard Bradshaw, Jennifer L. Clear, Sambor Czerwiński, Anne-Laure Daniau, John Dodson, Kevin J. Edwards, Mary E. Edwards, Angelica Feurdean, David Foster, Konrad Gajewski, Mariusz Gałka, Michelle Garneau, Thomas Giesecke, Graciela Gil Romera, Martin P. Girardin, Dana Hoefer, Kangyou Huang, Jun Inoue, Eva Jamrichová, Nauris Jasiunas, Wenying Jiang, Gonzalo Jiménez-Moreno, Monika Karpińska-Kołaczek, Piotr Kołaczek, Niina Kuosmanen, Mariusz Lamentowicz, Martin Lavoie, Fang Li, Jianyong Li, Olga Lisitsyna, José Antonio López-Sáez, Reyes Luelmo-Lautenschlaeger, Gabriel Magnan, Eniko Katalin Magyari, Alekss Maksims, Katarzyna Marcisz, Elena Marinova, Jenn Marlon, Scott Mensing, Joanna Miroslaw-Grabowska, Wyatt Oswald, Sebastián Pérez-Díaz, Ramón Pérez-Obiol, Sanna Piilo, Anneli Poska, Xiaoguang Qin, Cécile C. Remy, Pierre J. H. Richard, Sakari Salonen, Naoko Sasaki, Hieke Schneider, William Shotyk, Migle Stancikaite, Dace Šteinberga, Normunds Stivrins, Hikaru Takahara, Zhihai Tan, Liva Trasune, Charles E. Umbanhowar, Minna Väliranta, Jüri Vassiljev, Xiayun Xiao, Qinghai Xu, Xin Xu, Edyta Zawisza, Yan Zhao, Zheng Zhou, and Jordan Paillard
Earth Syst. Sci. Data, 14, 1109–1124, https://doi.org/10.5194/essd-14-1109-2022, https://doi.org/10.5194/essd-14-1109-2022, 2022
Short summary
Short summary
We provide a new global data set of charcoal preserved in sediments that can be used to examine how fire regimes have changed during past millennia and to investigate what caused these changes. The individual records have been standardised, and new age models have been constructed to allow better comparison across sites. The data set contains 1681 records from 1477 sites worldwide.
Roman Procyk, Shaun Lovejoy, and Raphael Hébert
Earth Syst. Dynam., 13, 81–107, https://doi.org/10.5194/esd-13-81-2022, https://doi.org/10.5194/esd-13-81-2022, 2022
Short summary
Short summary
This paper presents a new class of energy balance model that accounts for the long memory within the Earth's energy storage. The model is calibrated on instrumental temperature records and the historical energy budget of the Earth using an error model predicted by the model itself. Our equilibrium climate sensitivity and future temperature projection estimates are consistent with those estimated by complex climate models.
Anne Dallmeyer, Martin Claussen, Stephan J. Lorenz, Michael Sigl, Matthew Toohey, and Ulrike Herzschuh
Clim. Past, 17, 2481–2513, https://doi.org/10.5194/cp-17-2481-2021, https://doi.org/10.5194/cp-17-2481-2021, 2021
Short summary
Short summary
Using the comprehensive Earth system model, MPI-ESM1.2, we explore the global Holocene vegetation changes and interpret them in terms of the Holocene climate change. The model results reveal that most of the Holocene vegetation transitions seen outside the high northern latitudes can be attributed to modifications in the intensity of the global summer monsoons.
Stuart A. Vyse, Ulrike Herzschuh, Gregor Pfalz, Lyudmila A. Pestryakova, Bernhard Diekmann, Norbert Nowaczyk, and Boris K. Biskaborn
Biogeosciences, 18, 4791–4816, https://doi.org/10.5194/bg-18-4791-2021, https://doi.org/10.5194/bg-18-4791-2021, 2021
Short summary
Short summary
Lakes act as important stores of organic carbon and inorganic sediment material. This study provides a first investigation into carbon and sediment accumulation and storage within an Arctic glacial lake from Far East Russia. It shows that major shifts are related to palaeoclimate variation that affects the development of the lake and its surrounding catchment. Spatial differences to other lake systems from other regions may reflect variability in processes controlled by latitude and altitude.
Raphaël Hébert, Kira Rehfeld, and Thomas Laepple
Nonlin. Processes Geophys., 28, 311–328, https://doi.org/10.5194/npg-28-311-2021, https://doi.org/10.5194/npg-28-311-2021, 2021
Short summary
Short summary
Paleoclimate proxy data are essential for broadening our understanding of climate variability. There remain, however, challenges for traditional methods of variability analysis to be applied to such data, which are usually irregular. We perform a comparative analysis of different methods of scaling analysis, which provide variability estimates as a function of timescales, applied to irregular paleoclimate proxy data.
Xianyong Cao, Fang Tian, Kai Li, Jian Ni, Xiaoshan Yu, Lina Liu, and Nannan Wang
Earth Syst. Sci. Data, 13, 3525–3537, https://doi.org/10.5194/essd-13-3525-2021, https://doi.org/10.5194/essd-13-3525-2021, 2021
Short summary
Short summary
The Tibetan Plateau is quite remote, and it is difficult to collect samples on it; the previous modern pollen data are located on a nearby road, and there is a large geographic gap in the eastern and central Tibetan Plateau. Our novel pollen data can fill the gap and will be valuable in establishing a complete dataset covering the entire Tibetan Plateau, thus helping us to get a comprehensive understanding. In addition, the dataset can also be used to investigate plant species distribution.
Ramesh Glückler, Ulrike Herzschuh, Stefan Kruse, Andrei Andreev, Stuart Andrew Vyse, Bettina Winkler, Boris K. Biskaborn, Luidmila Pestryakova, and Elisabeth Dietze
Biogeosciences, 18, 4185–4209, https://doi.org/10.5194/bg-18-4185-2021, https://doi.org/10.5194/bg-18-4185-2021, 2021
Short summary
Short summary
Data about past fire activity are very sparse in Siberia. This study presents a first high-resolution record of charcoal particles from lake sediments in boreal eastern Siberia. It indicates that current levels of charcoal accumulation are not unprecedented. While a recent increase in reconstructed fire frequency coincides with rising temperatures and increasing human activity, vegetation composition does not seem to be a major driver behind changes in the fire regime in the past two millennia.
Lydia Stolpmann, Caroline Coch, Anne Morgenstern, Julia Boike, Michael Fritz, Ulrike Herzschuh, Kathleen Stoof-Leichsenring, Yury Dvornikov, Birgit Heim, Josefine Lenz, Amy Larsen, Katey Walter Anthony, Benjamin Jones, Karen Frey, and Guido Grosse
Biogeosciences, 18, 3917–3936, https://doi.org/10.5194/bg-18-3917-2021, https://doi.org/10.5194/bg-18-3917-2021, 2021
Short summary
Short summary
Our new database summarizes DOC concentrations of 2167 water samples from 1833 lakes in permafrost regions across the Arctic to provide insights into linkages between DOC and environment. We found increasing lake DOC concentration with decreasing permafrost extent and higher DOC concentrations in boreal permafrost sites compared to tundra sites. Our study shows that DOC concentration depends on the environmental properties of a lake, especially permafrost extent, ecoregion, and vegetation.
Lucas Dugerdil, Sébastien Joannin, Odile Peyron, Isabelle Jouffroy-Bapicot, Boris Vannière, Bazartseren Boldgiv, Julia Unkelbach, Hermann Behling, and Guillemette Ménot
Clim. Past, 17, 1199–1226, https://doi.org/10.5194/cp-17-1199-2021, https://doi.org/10.5194/cp-17-1199-2021, 2021
Short summary
Short summary
Since the understanding of Holocene climate change appears to be a relevant issue for future climate change, the paleoclimate calibrations have to be improved. Here, surface samples from Mongolia and Siberia were analyzed to provide new calibrations for pollen and biomarker climate models. These calibrations appear to be more powerful than global calibrations, especially in an arid central Asian context. These calibrations will improve the understanding of monsoon Holocene oscillations.
Iuliia Shevtsova, Ulrike Herzschuh, Birgit Heim, Luise Schulte, Simone Stünzi, Luidmila A. Pestryakova, Evgeniy S. Zakharov, and Stefan Kruse
Biogeosciences, 18, 3343–3366, https://doi.org/10.5194/bg-18-3343-2021, https://doi.org/10.5194/bg-18-3343-2021, 2021
Short summary
Short summary
In the light of climate changes in subarctic regions, notable general increase in above-ground biomass for the past 15 years (2000 to 2017) was estimated along a tundra–taiga gradient of central Chukotka (Russian Far East). The greatest increase occurred in the northern taiga in the areas of larch closed-canopy forest expansion with Cajander larch as a main contributor. For the estimations, we used field data (taxa-separated plant biomass, 2018) and upscaled it based on Landsat satellite data.
Simone Maria Stuenzi, Julia Boike, William Cable, Ulrike Herzschuh, Stefan Kruse, Luidmila A. Pestryakova, Thomas Schneider von Deimling, Sebastian Westermann, Evgenii S. Zakharov, and Moritz Langer
Biogeosciences, 18, 343–365, https://doi.org/10.5194/bg-18-343-2021, https://doi.org/10.5194/bg-18-343-2021, 2021
Short summary
Short summary
Boreal forests in eastern Siberia are an essential component of global climate patterns. We use a physically based model and field measurements to study the interactions between forests, permanently frozen ground and the atmosphere. We find that forests exert a strong control on the thermal state of permafrost through changing snow cover dynamics and altering the surface energy balance, through absorbing most of the incoming solar radiation and suppressing below-canopy turbulent fluxes.
Mareike Wieczorek and Ulrike Herzschuh
Earth Syst. Sci. Data, 12, 3515–3528, https://doi.org/10.5194/essd-12-3515-2020, https://doi.org/10.5194/essd-12-3515-2020, 2020
Short summary
Short summary
Relative pollen productivity (RPP) estimates are used to estimate vegetation cover from pollen records. This study provides (i) a compilation of northern hemispheric RPP studies, allowing researchers to identify suitable sets for their study region and to identify data gaps for future research, and (ii) taxonomically harmonized, unified RPP sets for China, Europe, North America, and the whole Northern Hemisphere, generated from the available studies.
Basil A. S. Davis, Manuel Chevalier, Philipp Sommer, Vachel A. Carter, Walter Finsinger, Achille Mauri, Leanne N. Phelps, Marco Zanon, Roman Abegglen, Christine M. Åkesson, Francisca Alba-Sánchez, R. Scott Anderson, Tatiana G. Antipina, Juliana R. Atanassova, Ruth Beer, Nina I. Belyanina, Tatiana A. Blyakharchuk, Olga K. Borisova, Elissaveta Bozilova, Galina Bukreeva, M. Jane Bunting, Eleonora Clò, Daniele Colombaroli, Nathalie Combourieu-Nebout, Stéphanie Desprat, Federico Di Rita, Morteza Djamali, Kevin J. Edwards, Patricia L. Fall, Angelica Feurdean, William Fletcher, Assunta Florenzano, Giulia Furlanetto, Emna Gaceur, Arsenii T. Galimov, Mariusz Gałka, Iria García-Moreiras, Thomas Giesecke, Roxana Grindean, Maria A. Guido, Irina G. Gvozdeva, Ulrike Herzschuh, Kari L. Hjelle, Sergey Ivanov, Susanne Jahns, Vlasta Jankovska, Gonzalo Jiménez-Moreno, Monika Karpińska-Kołaczek, Ikuko Kitaba, Piotr Kołaczek, Elena G. Lapteva, Małgorzata Latałowa, Vincent Lebreton, Suzanne Leroy, Michelle Leydet, Darya A. Lopatina, José Antonio López-Sáez, André F. Lotter, Donatella Magri, Elena Marinova, Isabelle Matthias, Anastasia Mavridou, Anna Maria Mercuri, Jose Manuel Mesa-Fernández, Yuri A. Mikishin, Krystyna Milecka, Carlo Montanari, César Morales-Molino, Almut Mrotzek, Castor Muñoz Sobrino, Olga D. Naidina, Takeshi Nakagawa, Anne Birgitte Nielsen, Elena Y. Novenko, Sampson Panajiotidis, Nata K. Panova, Maria Papadopoulou, Heather S. Pardoe, Anna Pędziszewska, Tatiana I. Petrenko, María J. Ramos-Román, Cesare Ravazzi, Manfred Rösch, Natalia Ryabogina, Silvia Sabariego Ruiz, J. Sakari Salonen, Tatyana V. Sapelko, James E. Schofield, Heikki Seppä, Lyudmila Shumilovskikh, Normunds Stivrins, Philipp Stojakowits, Helena Svobodova Svitavska, Joanna Święta-Musznicka, Ioan Tantau, Willy Tinner, Kazimierz Tobolski, Spassimir Tonkov, Margarita Tsakiridou, Verushka Valsecchi, Oksana G. Zanina, and Marcelina Zimny
Earth Syst. Sci. Data, 12, 2423–2445, https://doi.org/10.5194/essd-12-2423-2020, https://doi.org/10.5194/essd-12-2423-2020, 2020
Short summary
Short summary
The Eurasian Modern Pollen Database (EMPD) contains pollen counts and associated metadata for 8134 modern pollen samples from across the Eurasian region. The EMPD is part of, and complementary to, the European Pollen Database (EPD) which contains data on fossil pollen found in Late Quaternary sedimentary archives. The purpose of the EMPD is to provide calibration datasets and other data to support palaeoecological research on past climates and vegetation cover over the Quaternary period.
Heike H. Zimmermann, Kathleen R. Stoof-Leichsenring, Stefan Kruse, Juliane Müller, Ruediger Stein, Ralf Tiedemann, and Ulrike Herzschuh
Ocean Sci., 16, 1017–1032, https://doi.org/10.5194/os-16-1017-2020, https://doi.org/10.5194/os-16-1017-2020, 2020
Short summary
Short summary
This study targets high-resolution, diatom-specific sedimentary ancient DNA using a DNA metabarcoding approach. Diatom DNA has been preserved with substantial taxonomic richness in the eastern Fram Strait over the past 30 000 years with taxonomic composition being dominated by cold-water and sea-ice-associated diatoms. Taxonomic reorganisations took place after the Last Glacial Maximum and after the Younger Dryas. Peak proportions of pennate diatoms might indicate past sea-ice presence.
Cited articles
Andrén, E., Klimaschewski, A., Self, A. E., St. Amour, N., Andreev, A.
A., Bennett, K. D., Conley, D. J., Edwards, T. W. D., Solovieva, N., and
Hammarlund, D.: Holocene climate and environmental change in north-eastern
Kamchatka (Russian Far East), inferred from a multi-proxy study of lake
sediments, Global Planet. Change, 134, 41–54,
https://doi.org/10.1016/j.gloplacha.2015.02.013, 2015.
Behre, K. E.: The rôle of man in European vegetation history, in:
Vegetation history, edited by: Huntley, B. and Webb, T., Handbook of vegetation
science, 7, Springer, Dordrecht,
https://doi.org/10.1007/978-94-009-3081-0_17, 1988.
Birks, H. J. B.: Contributions of Quaternary botany to modern ecology and
biogeography, Plant Ecol. Divers., 12, 189–385,
https://doi.org/10.1080/17550874.2019.1646831, 2019.
Birks, H. J. B., Heiri, O., Seppä, H., and Bjune, A. E.: Strengths and
Weaknesses of Quantitative Climate Reconstructions Based on Late-Quaternary,
Open Ecol. J., 3, 68–110, https://doi.org/10.2174/1874213001003020068,
2010.
Blaauw, M. and Christen, J. A.: Flexible paleoclimate age-depth models using
an autoregressive gamma process, Bayesian Anal., 6,
457–474, https://doi.org/10.1214/11-BA618, 2011.
Blois, J. L., Williams, J. W., Grimm, E. C., Jackson, S. T., and Graham, R.
W.: A methodological framework for assessing and reducing temporal
uncertainty in paleovegetation mapping from late-Quaternary pollen records,
Quaternary Sci. Rev., 30, 1926–1939,
https://doi.org/10.1016/j.quascirev.2011.04.017, 2011.
Bova, S., Rosenthal, Y., Liu, Z., Godad, S. P., and Yan, M.: Seasonal origin
of the thermal maxima at the Holocene and the last interglacial, Nature,
589, 548–553, https://doi.org/10.1038/s41586-020-03155-x, 2021.
Brewer, S., Guiot, J., Sánchez-Goñi, M. F., and Klotz, S.: The
climate in Europe during the Eemian: a multi-method approach using pollen
data, Quaternary Sci. Rev., 27, 2303–2315,
https://doi.org/10.1016/j.quascirev.2008.08.029, 2008.
Cao, X., Ni, J., Herzschuh, U., Wang, Y., and Zhao, Y.: A late Quaternary
pollen dataset from eastern continental Asia for vegetation and climate
reconstructions: Set up and evaluation, Rev. Palaeobot. Palyno., 194,
21–37, https://doi.org/10.1016/j.revpalbo.2013.02.003, 2013.
Cao, X., Herzschuh, U., Telford, R. J., and Ni, J.: A modern pollen–climate
dataset from China and Mongolia: Assessing its potential for climate
reconstruction, Rev. Palaeobot. Palyno., 211, 87–96,
https://doi.org/10.1016/j.revpalbo.2014.08.007, 2014.
Cao, X., Tian, F., Telford, R. J., Ni, J., Xu, Q., Chen, F., Liu, X.,
Stebich, M., Zhao, Y., and Herzschuh, U.: Impacts of the spatial extent of
pollen-climate calibration-set on the absolute values, range and trends of
reconstructed Holocene precipitation, Quaternary Sci. Rev., 178, 37–53,
https://doi.org/10.1016/j.quascirev.2017.10.030, 2017.
Cao, X., Tian, F., Andreev, A., Anderson, P. M., Lozhkin, A. V., Bezrukova, E., Ni, J., Rudaya, N., Stobbe, A., Wieczorek, M., and Herzschuh, U.: A taxonomically harmonized and temporally standardized fossil pollen dataset from Siberia covering the last 40 kyr, Earth Syst. Sci. Data, 12, 119–135, https://doi.org/10.5194/essd-12-119-2020, 2020.
Cartapanis, O., Jonkers, L., Moffa-Sanchez, P., Jaccard, S. L., and de
Vernal, A.: Complex spatio-temporal structure of the Holocene Thermal
Maximum, Nat. Commun., 13, 5662, https://doi.org/10.1038/s41467-022-33362-1,
2022.
Chen, F., Chen, J., Huang, W., Chen, S., Huang, X., Jin, L., Jia, J., Zhang,
X., An, C., Zhang, J., Zhao, Y., Yu, Z., Zhang, R., Liu, J., Zhou, A., and
Feng, S.: Westerlies Asia and monsoonal Asia: Spatiotemporal differences in
climate change and possible mechanisms on decadal to sub-orbital timescales,
Earth Sci. Rev., 192, 337–354,
https://doi.org/10.1016/j.earscirev.2019.03.005, 2019.
Chevalier, M.: Enabling possibilities to quantify past climate from fossil
assemblages at a global scale, Global Planet. Change, 175, 27–35,
https://doi.org/10.1016/j.gloplacha.2019.01.016, 2019.
Chevalier, M.: crestr: an R package to perform probabilistic climate reconstructions from palaeoecological datasets, Clim. Past, 18, 821–844, https://doi.org/10.5194/cp-18-821-2022, 2022.
Chevalier, M., Cheddadi, R., and Chase, B. M.: CREST (Climate REconstruction SofTware): a probability density function (PDF)-based quantitative climate reconstruction method, Clim. Past, 10, 2081–2098, https://doi.org/10.5194/cp-10-2081-2014, 2014.
Chevalier, M., Davis, B. A. S., Heiri, O., Seppä, H., Chase, B. M.,
Gajewski, K., Lacourse, T., Telford, R. J., Finsinger, W., Guiot, J.,
Kühl, N., Maezumi, S. Y., Tipton, J. R., Carter, V. A., Brussel, T.,
Phelps, L. N., Dawson, A., Zanon, M., Vallé, F., Nolan, C., Mauri, A.,
de Vernal, A., Izumi, K., Holmström, L., Marsicek, J., Goring, S.,
Sommer, P. S., Chaput, M., and Kupriyanov, D.: Pollen-based climate
reconstruction techniques for late Quaternary studies, Earth Sci. Rev., 210,
103384, https://doi.org/10.1016/j.earscirev.2020.103384, 2020.
Clark, P. U., Dyke, A. S., Shakun, J. D., Carlson, A. E., Clark, J., Wohlfarth, B., Mitrovica, J. X., Hostetler, S. W., and McCabe, A. M.: The Last Glacial Maximum, Science, 325, 710–714, https://doi.org/10.1126/science.1172873, 2009.
Davis, B. A. S., Zanon, M., Collins, P., Mauri, A., Bakker, J., Barboni, D.,
Barthelmes, A., Beaudouin, C., Bjune, A. E., Bozilova, E., Bradshaw, R. H.
W., Brayshay, B. A., Brewer, S., Brugiapaglia, E., Bunting, J., Connor, S.
E., de Beaulieu, J.-L., Edwards, K., Ejarque, A., Fall, P., Florenzano, A.,
Fyfe, R., Galop, D., Giardini, M., Giesecke, T., Grant, M. J., Guiot, J.,
Jahns, S., Jankovská, V., Juggins, S., Kahrmann, M., Karpińska-Kołaczek, M., Kołaczek, P., Kühl, N., Kuneš, P., Lapteva, E. G.,
Leroy, S. A. G., Leydet, M., Guiot, J., Jahns, S., Jankovská, V.,
Juggins, S., Kahrmann, M., Karpińska-Kołaczek, M., Kołaczek, P.,
Kühl, N., Kuneš, P., Lapteva, E. G., Leroy, S. A. G., Leydet, M.,
López Sáez, J. A., Masi, A., Matthias, I., Mazier, F., Meltsov, V.,
Mercuri, A. M., Miras, Y., Mitchell, F. J. G., Morris, J. L., Naughton, F.,
Nielsen, A. B., Novenko, E., Odgaard, B., Ortu, E., Overballe-Petersen, M.
V., Pardoe, H. S., Peglar, S. M., Pidek, I. A., Sadori, L., Seppä, H.,
Severova, E., Shaw, H., Święta-Musznicka, J., Theuerkauf, M.,
Tonkov, S., Veski, S., van der Knaap, W. O., van Leeuwen, J. F. N.,
Woodbridge, J., Zimny, M., and Kaplan, J. O.: The European Modern Pollen
Database (EMPD) project, Veg. Hist. Archaeobot., 22, 521–530,
https://doi.org/10.1007/s00334-012-0388-5, 2013.
Eyring, V., Cox, P. M., Flato, G. M., Gleckler, P. J., Abramowitz, G.,
Caldwell, P., Collins, W. D., Gier, B. K., Hall, A. D., Hoffman, F. M.,
Hurtt, G. C., Jahn, A., Jones, C. D., Klein, S. A., Krasting, J. P.,
Kwiatkowski, L., Lorenz, R., Maloney, E., Meehl, G. A., Pendergrass, A. G.,
Pincus, R., Ruane, A. C., Russell, J. L., Sanderson, B. M., Santer, B. D.,
Sherwood, S. C., Simpson, I. R., Stouffer, R. J., and Williamson, M. S.:
Taking climate model evaluation to the next level, Nat. Clim. Change, 9,
102–110, https://doi.org/10.1038/s41558-018-0355-y, 2019.
Fick, S. E. and Hijmans, R. J.: WorldClim 2: new 1-km spatial resolution
climate surfaces for global land areas, Int. J. Climatol., 37, 4302–4315,
https://doi.org/10.1002/joc.5086, 2017.
Gajewski, K., Vance, R., Sawada, M., Fung, I., Gignac, L. D., Halsey, L.,
John, J., Maisongrande, P., Mandell, P., Mudie, P. J., Richard, P. J. H.,
Sherin, A. G., Soroko, J., and Vitt, D. H.: The climate of North America and
adjacent ocean waters ca. 6 ka, Can. J. Earth Sci., 37.5,
661–681, 2000.
Hao, Z., Phillips, T. J., Hao, F., and Wu, X.: Changes in the dependence
between global precipitation and temperature from observations and model
simulations, Int. J. Climatol., 39, 4895–4906,
https://doi.org/10.1002/joc.6111, 2019.
He, F.: Simulating transient climate evolution of the last deglaciation with
CCSM3, PhD thesis, University of Wisconsin-Madison, USA, 185 pp., 2010.
Hébert, R., Herzschuh, U., and Laepple, T.: Millennial-scale climate
variability over land overprinted by ocean temperature fluctuations, Nat.
Geosci., 15, 899–905, https://doi.org/10.1038/s41561-022-01056-4, 2022.
Herzschuh, U., Cao, X., Laepple, T., Dallmeyer, A., Telford, R. J., Ni, J.,
Chen, F., Kong, Z., Liu, G., Liu, K.-B., Liu, X., Stebich, M., Tang, L.,
Tian, F., Wang, Y., Wischnewski, J., Xu, Q., Yan, S., Yang, Z., Yu, G.,
Zhang, Y., Zhao, Y., and Zheng, Z.: Position and orientation of the westerly
jet determined Holocene rainfall patterns in China, Nat. Commun., 10, 2376,
https://doi.org/10.1038/s41467-019-09866-8, 2019.
Herzschuh, U., Böhmer, T., Li, C., Cao, X., Hébert, R., Dallmeyer,
A., Telford, R. J., and Kruse, S.: Reversals in temperature-precipitation
correlations in the Northern Hemisphere extratropics during the Holocene,
Geophys. Res. Lett., 49, e2022GL099730,
https://doi.org/10.1029/2022GL099730, 2022a.
Herzschuh, U., Li, C., Böhmer, T., Postl, A. K., Heim, B., Andreev, A. A., Cao, X., Wieczorek, M., and Ni, J.: LegacyPollen 1.0: a taxonomically harmonized global late Quaternary pollen dataset of 2831 records with standardized chronologies, Earth Syst. Sci. Data, 14, 3213–3227, https://doi.org/10.5194/essd-14-3213-2022, 2022b.
Herzschuh, U., Böhmer, T., Li, C., and Cao, X.: Northern Hemisphere temperature and precipitation reconstruction from taxonomically harmonized pollen data set with revised chronologies using WA-PLS and MAT (LegacyClimate 1.0), PANGAEA [dataset], https://doi.org/10.1594/PANGAEA.930512, 2023a.
Herzschuh, U., Böhmer, T., Li, C., Chevalier, M., Hébert, R., Dallmeyer, A., Cao, X., Bigelow, N. H., Nazarova, L., Novenko, E. Y., Park, J., Peyron, O., Rudaya, N. A., Schlütz, F., Shumilovskikh, L. S., Tarasov, P. E., Wang, Y., Wen, R., Xu, Q., and Zheng, Z.: LegacyClimate 1.0: a dataset of pollen-based climate reconstructions from 2594 Northern Hemisphere sites covering the last 30 kyr and beyond, Zenodo [code], https://doi.org/10.5281/zenodo.7887565, 2023b.
Hijmans, R. J., van Etten, J., Sumner, M., Cheng, J., Baston, D., Bevan, A.,
Bivand, R., Busetto, L., Canty, M., Fasoli, B., Forrest, D., Ghosh, A.,
Golicher, D., Gray, J., Greenberg, J. A., Hiemstra, P., Hingee, K., Ilich,
A., Institute for Mathematics Applied Geosciences, Karney, C., Mattiuzzi,
M., Mosher, S., Naimi, B., Nowosad, J., Pebesma, E., Lamigueiro, O. P.,
Racine, E. B., Rowlingson, B., Shortridge, A., Venables, B., and Wueest, R.:
Raster: Geographic Data Analysis and Modeling, R package version 3.5-11,
https://cran.r-project.org/web/packages/raster (last access: 22 November 2021), 2021.
Hill, M. O.: Diversity and Evenness: A Unifying Notation and Its
Consequences, Ecology, 54, 427–432, https://doi.org/10.2307/1934352, 1973.
Izumi, K. and Bartlein, P. J.: North American paleoclimate reconstructions
for the Last Glacial Maximum using an inverse modeling through iterative
forward modeling approach applied to pollen data: Pollen-Based Climate
Reconstruction, Geophys. Res. Lett., 43, 10965–10972,
https://doi.org/10.1002/2016GL070152, 2016.
Jackson, S. T.: Pollen source area and representation in small lakes of the
northeastern United States, Rev. Palaeobot. Palynol., 63, 53–76,
https://doi.org/10.1016/0034-6667(90)90006-5, 1990.
Jackson, S. T. and Williams, J. W.: Modern analogs in quaternary
paleoecology: Here Today, Gone Yesterday, Gone Tomorrow?, Annu. Rev. Earth
Planet. Sci., 32, 495–537,
https://doi.org/10.1146/annurev.earth.32.101802.120435, 2004.
Juggins, S.: Quantitative reconstructions in palaeolimnology: new paradigm
or sick science?, Quaternary Sci. Rev., 64, 20–32,
https://doi.org/10.1016/j.quascirev.2012.12.014, 2013.
Juggins, S.: rioja: Analysis of Quaternary Science Data, R package version
0.9-21, https://cran.r-project.org/web/packages/rioja (last access: 22 November 2021), 2019.
Kaufman, D., McKay, N., Routson, C., Erb, M., Dätwyler, C., Sommer, P. S., Heiri, O., and Davis, B.: Holocene global mean surface temperature, a multi-method reconstruction approach, Sci. Data, 7, 201, https://doi.org/10.1038/s41597-020-0530-7, 2020b.
Kucera, M., Weinelt, M., Kiefer, T., Pflaumann, U., Hayes, A., Weinelt, M.,
Chen, M.-T., Mix, A. C., Barrows, T. T., Cortijo, E., Duprat, J., Juggins,
S., and Waelbroeck, C.: Reconstruction of sea-surface temperatures from
assemblages of planktonic foraminifera: multi-technique approach based on
geographically constrained calibration data sets and its application to
glacial Atlantic and Pacific Oceans, Quaternary Sci. Rev., 24,
951–998, https://doi.org/10.1016/j.quascirev.2004.07.014, 2005.
Li, C., Postl, A. K., Böhmer, T., Cao, X., Dolman, A. M., and Herzschuh, U.: Harmonized chronologies of a global late Quaternary pollen dataset (LegacyAge 1.0), Earth Syst. Sci. Data, 14, 1331–1343, https://doi.org/10.5194/essd-14-1331-2022, 2022.
Liu, Z., Zhu, J., Rosenthal, Y., Zhang, X., Otto-Bliesner, B. L.,
Timmermann, A., Smith, R. S., Lohmann, G., Zheng, W., and Timm, O. E.: The
Holocene temperature conundrum, P. Natl. Acad. Sci. USA, 111, E3501–E3505,
https://doi.org/10.1073/pnas.1407229111, 2014.
Luoto, T. P., Kaukolehto, M., Weckström, J., Korhola, A., and
Väliranta, M.: New evidence of warm early-Holocene summers in subarctic
Finland based on an enhanced regional chironomid-based temperature
calibration model, Quaternary Res., 81, 50–62,
https://doi.org/10.1016/j.yqres.2013.09.010, 2014.
Marcott, S. A., Shakun, J. D., Clark, P. U., and Mix, A. C.: A
Reconstruction of Regional and Global Temperature for the Past 11,300 Years,
Science, 339, 1198–1201, https://doi.org/10.1126/science.1228026, 2013.
Marsicek, J., Shuman, B. N., Bartlein, P. J., Shafer, S. L., and Brewer, S.:
Reconciling divergent trends and millennial variations in Holocene
temperatures, Nature, 554, 92–96, https://doi.org/10.1038/nature25464,
2018.
Mauri, A., Davis, B. A. S., Collins, P. M., and Kaplan, J. O.: The climate
of Europe during the Holocene: a gridded pollen-based reconstruction and its
multi-proxy evaluation, Quaternary Sci. Rev., 112, 109–127,
https://doi.org/10.1016/j.quascirev.2015.01.013, 2015.
Nychka, D., Furrer, R., Paige, J., Sain, S., Gerber, F., and Iverson, M.:
fields: Tools for Spatial Data, R package version 10.3,
https://cran.r-project.org/web/packages/fields/index.html (last access: 22 November 2021), 2020.
Oksanen, J., Blanchet, F. G., Friendly, M., Kindt, R., Legendre, P.,
McGlinn, D., Minchin, P. R., O'Hara, R. B., Simpson, G. L., Solymos, P.,
Stevens, M. H. H., Szoecs, E., and Wagner, H.: Vegan: Community Ecology
Package, R package version 2.5-7,
https://cran.r-project.org/web/packages/vegan (last access: 22 November 2021), 2020.
Osman, M. B., Tierney, J. E., Zhu, J., Tardif, R., Hakim, G. J., King, J.,
and Poulsen, C. J.: Globally resolved surface temperatures since the Last
Glacial Maximum, Nature, 599, 239–244,
https://doi.org/10.1038/s41586-021-03984-4, 2021.
Overpeck, J. T., Webb, T., and Prentice, I. C.: Quantitative Interpretation
of Fossil Pollen Spectra: Dissimilarity Coefficients and the Method of
Modern Analogs, Quaternary Res., 23, 87–108,
https://doi.org/10.1016/0033-5894(85)90074-2, 1985.
Parnell, A. C., Haslett, J., Sweeney, J., Doan, T. K., Allen, J. R. M., and
Huntley, B.: Joint palaeoclimate reconstruction from pollen data via forward
models and climate histories, Quaternary Sci. Rev., 151, 111–126,
https://doi.org/10.1016/j.quascirev.2016.09.007, 2016.
R Core Team: R: A language and environment for statistical computing, R
Foundation for Statistical Computing, Vienna, Austria,
https://www.R-project.org/ (last access: 22 November 2021), 2020.
Rehfeld, K., Trachsel, M., Telford, R. J., and Laepple, T.: Assessing performance and seasonal bias of pollen-based climate reconstructions in a perfect model world, Clim. Past, 12, 2255–2270, https://doi.org/10.5194/cp-12-2255-2016, 2016.
Routson, C. C., McKay, N. P., Kaufman, D. S., Erb, M. P., Goosse, H.,
Shuman, B. N., Rodysill, J. R., and Ault, T.: Mid-latitude net precipitation
decreased with Arctic warming during the Holocene, Nature, 568, 83–87,
https://doi.org/10.1038/s41586-019-1060-3, 2019.
Self, A. E., Jones, V. J., and Brooks, S. J.: Late Holocene environmental
change in arctic western Siberia, Holocene, 25, 150–165,
https://doi.org/10.1177/0959683614556387, 2015.
Simpson, G. L.: Analogue Methods in Palaeolimnology, in: Tracking
Environmental Change Using Lake Sediments: Data Handling and Numerical
Techniques, edited by: Birks, H. J. B., Lotter, A. F., Juggins, S., and
Smol, J. P., Springer Netherlands, Dordrecht, 495–522,
https://doi.org/10.1007/978-94-007-2745-8_15, 2012.
Simpson, G. L., Oksanen, J., and Maechler, M.: analogue: Analogue and Weighted
Averaging Methods for Palaeoecology, R package version 0.17-6,
https://cran.r-project.org/web/packages/analogue (last access: 22 November 2021), 2021.
Sugita, S.: A Model of Pollen Source Area for an Entire Lake Surface,
Quaternary Res., 39, 239–244, https://doi.org/10.1006/qres.1993.1027, 1993.
Tarasov, P. E., Nakagawa, T., Demske, D., Österle, H., Igarashi, Y.,
Kitagawa, J., Mokhova, L., Bazarova, V., Okuda, M., Gotanda, K., Miyoshi,
N., Fujiki, T., Takemura, K., Yonenobu, H., and Fleck, A.: Progress in the
reconstruction of Quaternary climate dynamics in the Northwest Pacific: A
new modern analogue reference dataset and its application to the 430-kyr
pollen record from Lake Biwa, Earth Sci. Rev., 108, 64–79,
https://doi.org/10.1016/j.earscirev.2011.06.002, 2011.
Telford, R. J.: palaeoSig: Significance Tests for Palaeoenvironmental
Reconstructions, R package version 2.0-3,
https://cran.r-project.org/web/packages/palaeoSig (last access: 22 November 2021), 2019.
Telford, R. J. and Birks, H. J. B.: A novel method for assessing the
statistical significance of quantitative reconstructions inferred from
biotic assemblages, Quaternary Sci. Rev., 30, 1272–1278,
https://doi.org/10.1016/j.quascirev.2011.03.002, 2011.
ter Braak, C. J. F.: CANOCO – a FORTRAN program for canonical community
ordination by (Partial) (Detrended) (Canonical) correspondence analysis and
redundancy analysis, Agricultural Mathematics Group, Wageningen, 1988.
ter Braak, C. J. F. and Juggins, S.: Weighted averaging partial least
squares regression (WA-PLS): an improved method for reconstructing
environmental variables from species assemblages, Hydrobiologia, 269,
485–502, https://doi.org/10.1007/BF00028046, 1993.
Tian, F., Cao, X., Dallmeyer, A., Zhao, Y., Ni, J., and Herzschuh, U.:
Pollen-climate relationships in time (9 ka, 6 ka, 0 ka) and space (upland
vs. lowland) in eastern continental Asia, Quaternary Sci. Rev., 156, 1–11,
https://doi.org/10.1016/j.quascirev.2016.11.027, 2017.
Trachsel, M. and Telford, R. J.: All age–depth models are wrong, but are
getting better, Holocene, 27, 860–869,
https://doi.org/10.1177/0959683616675939, 2017.
Trenberth, K. E.: Changes in precipitation with climate change, Clim. Res.,
47, 123–138, https://doi.org/10.3354/cr00953, 2011.
Whitmore, J., Gajewski, K., Sawada, M., Williams, J. W., Shuman, B.,
Bartlein, P. J., Minckley, T., Viau, A. E., Webb, T., Shafer, S., Anderson,
P., and Brubaker, L.: Modern pollen data from North America and Greenland
for multi-scale paleoenvironmental applications, Quaternary Sci. Rev., 24,
1828–1848, https://doi.org/10.1016/j.quascirev.2005.03.005, 2005.
Williams, J. W., Grimm, E. C., Blois, J. L., Charles, D. F., Davis, E. B.,
Goring, S. J., Graham, R. W., Smith, A. J., Anderson, M., Arroyo-Cabrales,
J., Ashworth, A. C., Betancourt, J. L., Bills, B. W., Booth, R. K.,
Buckland, P. I., Curry, B. B., Giesecke, T., Jackson, S. T., Latorre, C.,
Nichols, J., Purdum, T., Roth, R. E., Stryker, M., and Takahara, H.: The
Neotoma Paleoecology Database, a multiproxy, international,
community-curated data resource, Quaternary Res., 89, 156–177,
https://doi.org/10.1017/qua.2017.105, 2018.
Williams, J. W., Webb III, T., Richard, P. H., and Newby, P.: Late
Quaternary biomes of Canada and the eastern United States, J. Biogeogr., 27,
585–607, https://doi.org/10.1046/j.1365-2699.2000.00428.x, 2000.
Wu, R., Chen, J., and Wen, Z.: Precipitation-surface temperature
relationship in the IPCC CMIP5 models, Adv. Atmos. Sci., 30, 766–778,
https://doi.org/10.1007/s00376-012-2130-8, 2013.
Zanon, M., Davis, B. A. S., Marquer, L., Brewer, S., and Kaplan, J. O.:
European Forest Cover During the Past 12,000 Years: A Palynological
Reconstruction Based on Modern Analogs and Remote Sensing, Front. Plant
Sci., 9, 253, https://doi.org/10.3389/fpls.2018.00253, 2018.
Short summary
Climate reconstruction from proxy data can help evaluate climate models. We present pollen-based reconstructions of mean July temperature, mean annual temperature, and annual precipitation from 2594 pollen records from the Northern Hemisphere, using three reconstruction methods (WA-PLS, WA-PLS_tailored, and MAT). Since no global or hemispheric synthesis of quantitative precipitation changes are available for the Holocene so far, this dataset will be of great value to the geoscientific community.
Climate reconstruction from proxy data can help evaluate climate models. We present pollen-based...
Altmetrics
Final-revised paper
Preprint