Articles | Volume 13, issue 1
https://doi.org/10.5194/essd-13-99-2021
© Author(s) 2021. 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-13-99-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Data description paper
| 
27 Jan 2021
Data description paper |
| 27 Jan 2021
| 27 Jan 2021
GOCO06s – a satellite-only global gravity field model
Institute of Geodesy, Graz University of Technology,
Steyrergasse 30/III, 8010 Graz, Austria
Jan Martin Brockmann
Institute of Geodesy and Geoinformation, University of Bonn,
Nußallee 17, 53115 Bonn, Germany
Sandro Krauss
Institute of Geodesy, Graz University of Technology,
Steyrergasse 30/III, 8010 Graz, Austria
Austrian Academy of Sciences, Space Research Institute, Schmiedlstraße 6, 8042 Graz, Austria
Till Schubert
Institute of Geodesy and Geoinformation, University of Bonn,
Nußallee 17, 53115 Bonn, Germany
Thomas Gruber
Astronomical and Physical Geodesy,
Technical University of Munich, Arcisstraße 21, 80333 Munich, Germany
Ulrich Meyer
Astronomical Institute, University of Bern,
Sidlerstrasse 5, 3012 Bern, Switzerland
Torsten Mayer-Gürr
Institute of Geodesy, Graz University of Technology,
Steyrergasse 30/III, 8010 Graz, Austria
Wolf-Dieter Schuh
Institute of Geodesy and Geoinformation, University of Bonn,
Nußallee 17, 53115 Bonn, Germany
Adrian Jäggi
Astronomical Institute, University of Bern,
Sidlerstrasse 5, 3012 Bern, Switzerland
Roland Pail
Astronomical and Physical Geodesy,
Technical University of Munich, Arcisstraße 21, 80333 Munich, Germany
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Andreas Kvas, Gottfried Kirchengast, and Jürgen Fuchsberger
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2025-176, https://doi.org/10.5194/essd-2025-176, 2025
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The WegenerNet 3D Open-Air Laboratory for Climate Change Research in southeastern Austria observes the atmosphere from the surface up to an altitude of 10 kilometers. A variety of different sensors measure precipitation, water vapor content, humidity, temperature, and cloud properties in high spatial and temporal resolution. This enables detailed analyses of weather phenomena in a changing climate, such as heavy rainfall events and thunderstorms.
Stephanie J. Haas, Andreas Kvas, and Jürgen Fuchsberger
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In southeast Austria, summer thunderstorms often cause severe damage but are very hard to accurately forecast. With data from the WegenerNet 3D Open-Air Laboratory, we study these storms from beginning to end in multiple atmospheric parameters, like temperature, cloud properties, and wind speed. The characteristic features we find in these parameters expand our understanding of intense storms and can improve their prediction.
Martin Lasser, Ulrich Meyer, Adrian Jäggi, Torsten Mayer-Gürr, Andreas Kvas, Karl Hans Neumayer, Christoph Dahle, Frank Flechtner, Jean-Michel Lemoine, Igor Koch, Matthias Weigelt, and Jakob Flury
Adv. Geosci., 55, 1–11, https://doi.org/10.5194/adgeo-55-1-2020, https://doi.org/10.5194/adgeo-55-1-2020, 2020
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Correctly determining the orbit of Earth-orbiting satellites requires to account multiple background effects which appear in the system Earth. Usually, these effects are introduced by various complex force models, which are not always easy to handle. We publish and validate a data set of commonly used models to make it easier to track down potential issues when applying such background forces in orbit and gravity field determination.
Ben T. Gouweleeuw, Andreas Kvas, Christian Gruber, Animesh K. Gain, Thorsten Mayer-Gürr, Frank Flechtner, and Andreas Güntner
Hydrol. Earth Syst. Sci., 22, 2867–2880, https://doi.org/10.5194/hess-22-2867-2018, https://doi.org/10.5194/hess-22-2867-2018, 2018
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Daily GRACE gravity field solutions have been evaluated against daily river runoff data for major flood events in the Ganges–Brahmaputra Delta in 2004 and 2007. Compared to the monthly gravity field solutions, the trends over periods of a few days in the daily gravity field solutions are able to reflect temporal variations in river runoff during major flood events. This implies that daily gravity field solutions released in near-real time may support flood monitoring for large events.
Andreas Kvas, Gottfried Kirchengast, and Jürgen Fuchsberger
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2025-176, https://doi.org/10.5194/essd-2025-176, 2025
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The WegenerNet 3D Open-Air Laboratory for Climate Change Research in southeastern Austria observes the atmosphere from the surface up to an altitude of 10 kilometers. A variety of different sensors measure precipitation, water vapor content, humidity, temperature, and cloud properties in high spatial and temporal resolution. This enables detailed analyses of weather phenomena in a changing climate, such as heavy rainfall events and thunderstorms.
Stephanie J. Haas, Andreas Kvas, and Jürgen Fuchsberger
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In southeast Austria, summer thunderstorms often cause severe damage but are very hard to accurately forecast. With data from the WegenerNet 3D Open-Air Laboratory, we study these storms from beginning to end in multiple atmospheric parameters, like temperature, cloud properties, and wind speed. The characteristic features we find in these parameters expand our understanding of intense storms and can improve their prediction.
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Propagation of electromagnetic signals in the Earth's neutral atmosphere inflicts errors in space geodetic observations. To model these errors as accurately as possible, it is necessary to use a signal ray tracing algorithm which is informed of the state of the atmosphere. We developed such algorithm and tested it by modelling errors in GNSS network observations. Our algorithm's main advantage is loss-less utilization of atmospheric information provided by numerical weather prediction models.
Neda Darbeheshti, Martin Lasser, Ulrich Meyer, Daniel Arnold, and Adrian Jäggi
Earth Syst. Sci. Data, 16, 1589–1599, https://doi.org/10.5194/essd-16-1589-2024, https://doi.org/10.5194/essd-16-1589-2024, 2024
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This paper discusses strategies to improve the GRACE gravity field monthly solutions computed at the Astronomical Institute of the University of Bern. We updated the input observations and background models, as well as improving processing strategies in terms of instrument data screening and instrument parameterization.
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Geosci. Model Dev., 15, 2763–2771, https://doi.org/10.5194/gmd-15-2763-2022, https://doi.org/10.5194/gmd-15-2763-2022, 2022
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Production of satellite products relies on information from different centers. By coupling a weather model and an orbit determination solver we eliminate the dependence on one of the centers. The coupling has proven to be possible in the first stage, where no formatting has been applied to any of the models involved. This opens a window for further development and improvement to a coupling that has proven to be as good as the predecessor model.
Martin Lasser, Ulrich Meyer, Adrian Jäggi, Torsten Mayer-Gürr, Andreas Kvas, Karl Hans Neumayer, Christoph Dahle, Frank Flechtner, Jean-Michel Lemoine, Igor Koch, Matthias Weigelt, and Jakob Flury
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Correctly determining the orbit of Earth-orbiting satellites requires to account multiple background effects which appear in the system Earth. Usually, these effects are introduced by various complex force models, which are not always easy to handle. We publish and validate a data set of commonly used models to make it easier to track down potential issues when applying such background forces in orbit and gravity field determination.
Martin Lasser, Ulrich Meyer, Daniel Arnold, and Adrian Jäggi
Adv. Geosci., 50, 101–113, https://doi.org/10.5194/adgeo-50-101-2020, https://doi.org/10.5194/adgeo-50-101-2020, 2020
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We compute gravity field solutions from kinematic orbit positions of GRACE. These positions are derived from GPS based observations, and hence, they are contaminated by measurement noise. We present three methods of dealing with the noise in the data to obtain not only high-quality gravity field solutions but also an accurate quality information of the gravity fields.
João Teixeira da Encarnação, Pieter Visser, Daniel Arnold, Aleš Bezdek, Eelco Doornbos, Matthias Ellmer, Junyi Guo, Jose van den IJssel, Elisabetta Iorfida, Adrian Jäggi, Jaroslav Klokocník, Sandro Krauss, Xinyuan Mao, Torsten Mayer-Gürr, Ulrich Meyer, Josef Sebera, C. K. Shum, Chaoyang Zhang, Yu Zhang, and Christoph Dahle
Earth Syst. Sci. Data, 12, 1385–1417, https://doi.org/10.5194/essd-12-1385-2020, https://doi.org/10.5194/essd-12-1385-2020, 2020
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Although not the primary mission of the Swarm three-satellite constellation, the sensors on these satellites are accurate enough to measure the melting and accumulation of Earth’s ice reservoirs, precipitation cycles, floods, and droughts, amongst others. Swarm sees these changes well compared to the dedicated GRACE satellites at spatial scales of roughly 1500 km. Swarm confirms most GRACE observations, such as the large ice melting in Greenland and the wet and dry seasons in the Amazon.
Cyril Kobel, Daniel Arnold, and Adrian Jäggi
Adv. Geosci., 50, 27–37, https://doi.org/10.5194/adgeo-50-27-2019, https://doi.org/10.5194/adgeo-50-27-2019, 2019
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In this article we analyze the benefit of computing a combined solution from individual orbit solutions for the low Earth orbiting satellite Sentinel-3A. The selected combination scheme for calculating the combined solution is Variance Component Estimation. It could be shown that a combination of individual solutions can be beneficial in terms of Satellite Laser Ranging validation. In our opinion the findings are well transferable to other satellite missions.
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In this paper, we present an approach to represent underlying errors in measurements and physical models in the temporal gravity field determination using GRACE observations. This study provides an opportunity to improve the error model and the accuracy of the GRACE parameter estimation, as well as its successor GRACE Follow-On.
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Ann. Geophys., 37, 111–127, https://doi.org/10.5194/angeo-37-111-2019, https://doi.org/10.5194/angeo-37-111-2019, 2019
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Comparing Swarm GPS-only gravity fields to the ultra-precise GRACE K-Band gravity field schematic errors occurs around the geomagnetic equator. Due to the end of the GRACE mission, and the gap to the GRACE-FO mission, only Swarm can provide a continuous time series of gravity fields. We present different and assess different approaches to remove the schematic errors and thus improve the quality of the Swarm gravity fields.
Ben T. Gouweleeuw, Andreas Kvas, Christian Gruber, Animesh K. Gain, Thorsten Mayer-Gürr, Frank Flechtner, and Andreas Güntner
Hydrol. Earth Syst. Sci., 22, 2867–2880, https://doi.org/10.5194/hess-22-2867-2018, https://doi.org/10.5194/hess-22-2867-2018, 2018
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Daily GRACE gravity field solutions have been evaluated against daily river runoff data for major flood events in the Ganges–Brahmaputra Delta in 2004 and 2007. Compared to the monthly gravity field solutions, the trends over periods of a few days in the daily gravity field solutions are able to reflect temporal variations in river runoff during major flood events. This implies that daily gravity field solutions released in near-real time may support flood monitoring for large events.
Christiane Meyer, Ulrich Meyer, Andreas Pflitsch, and Valter Maggi
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In the paper a new method to calculate airflow speeds in static ice caves by using air temperature data is presented. As most study sites are in very remote places, where it is often not possible to use sonic anemometers and other devices for the analysis of the cave climate, we show how one can use the given database for calculating airflow speeds. Understanding/quantifying all elements of the specific cave climate is indispensable for understanding the evolution of the ice body in ice caves.
S. Krauss, M. Pfleger, and H. Lammer
Ann. Geophys., 32, 1305–1309, https://doi.org/10.5194/angeo-32-1305-2014, https://doi.org/10.5194/angeo-32-1305-2014, 2014
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Short summary
Earth's gravity field provides invaluable insights into the state and changing nature of our planet. GOCO06s combines over 1 billion measurements from 19 satellites to produce a global gravity field model. The combination of different observation principles allows us to exploit the strengths of each satellite mission and provide a high-quality data set for Earth and climate sciences.
Earth's gravity field provides invaluable insights into the state and changing nature of our...
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