Preprints
https://doi.org/10.5194/essd-2023-16
https://doi.org/10.5194/essd-2023-16
 
12 Jan 2023
12 Jan 2023
Status: this preprint is currently under review for the journal ESSD.

Spatial variability of Saharan dust deposition revealed through a citizen science campaign

Marie Dumont1,, Simon Gascoin2,, Marion Réveillet1,6, Didier Voisin6, François Tuzet1, Laurent Arnaud6, Mylène Bonnefoy8, Montse Bacardit Peñarroya15, Carlo Carmagnola1, Alexandre Deguine9,10, Aurélie Diacre14, Lukas Dürr7, Olivier Evrard3, Firmin Fontaine8, Amaury Frankl12,13, Mathieu Fructus1, Laure Gandois4, Isabelle Gouttevin1, Abdelfateh Gherab6, Pascal Hagenmuller1, Sophia Hansson4, Hervé Herbin9, Béatrice Josse5, Bruno Jourdain6, Irene Lefevre3, Gaël Le Roux4, Quentin Libois5, Lucie Liger11, Samuel Morin5, Denis Petitprez10, Alvaro Robledano6,1, Martin Schneebeli7, Pascal Salze11, Delphine Six6, Emmanuel Thibert8, Jürg Trachsel7, Matthieu Vernay1, Léo Viallon-Galinier1, and Céline Voiron6 Marie Dumont et al.
  • 1Univ. Grenoble Alpes, Université de Toulouse, Météo-France, CNRS, CNRM, Centre d’Études de la Neige, 38000 Grenoble, France
  • 2CESBIO, Université de Toulouse, CNES/CNRS/INRA/IRD/UPS, Toulouse, France
  • 3LSCE- IPSL - Laboratoire des Sciences du Climat et de l’Environnement [Gif-sur-Yvette] , CEA, CNRS, UVSQ, Université Paris-Saclay, France
  • 4Laboratoire Ecologie Fonctionnelle et Environnement, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
  • 5CNRM, Université de Toulouse, Météo-France, CNRS, Toulouse, France
  • 6Université Grenoble Alpes, CNRS, IRD, G-INP, IGE, Grenoble, France
  • 7WSL Institute for Snow and Avalanche Research SLF, Flüelastr. 11, 7260 Davos, Switzerland
  • 8Université Grenoble Alpes, INRAE, UR ETGR, Grenoble, France
  • 9Université de Lille, CNRS, UMR 8518 - LOA - Laboratoire d’Optique Atmosphérique, F-59000 Lille, France
  • 10Université de Lille, CNRS, UMR 8522 - PC2A - Physicochimie des Processus de Combustion et de l’Atmosphère, F-59000 Lille, France
  • 11Jardin du Lautaret, CNRS, Université Grenoble Alpes, Grenoble, France
  • 12INRAE, AMAP, IRD, CIRAD, CNRS, University Montpellier, Bld de la Lironde, 34398, Montpellier cedex 5, France
  • 13Ghent University, Department of Geography, Krijgslaan 281 (S8), 9000, Ghent, Belgium
  • 14Commissariat À L’Energie Atomique Et aux Énergies Alternatives (CEA, DAM, DIF), 91297 Arpajon, France
  • 15Centre de Lauegi d’Aran, Conselh Generau d’Aran, Spain
  • These authors contributed equally to this work.

Abstract. Saharan dust outbreaks have profound effects on ecosystems, climate, human health and the cryosphere in Europe. However, the spatial deposition pattern of Saharan dust is poorly known due to a sparse network of ground measurements. Following the extreme dust deposition event of February 2021 across Europe, a citizen science campaign was launched to sample dust on snow over the Pyrenees and the European Alps. This somewhat improvised campaign triggered wide interest since 152 samples were collected in the snow in the Pyrenees, the French Alps and the Swiss Alps in less than four weeks. An analysis of the samples showed a large variability in the dust properties and amount. We found a decrease in the deposited mass and particle sizes with distance from the source along the transport path. This spatial trend was also evident in the elemental composition of the dust as the iron mass fraction decreased from 11 % in the Pyrenees to 2 % in the Swiss Alps. At the local scale, we found a higher dust mass on south facing slopes, in agreement with estimates from high-resolution remote sensing data. This unique dataset, which resulted from the collaboration of several research laboratories and citizens, is provided as an open dataset to benefit a large community and enable further scientific investigations.

Marie Dumont et al.

Status: open (until 09 Mar 2023)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse

Marie Dumont et al.

Data sets

Dataset related to the study "Spatial variability of Saharan dust deposition revealed through a citizen science campaign Dumont, Marie; Gascoin, Simon; Reveillet, Marion; Voisin, Didier; Evrard, Olivier; Gandois, Laure; Herbin, Herve; Le Roux, Gael; Lefevre, Irene https://doi.org/10.5281/zenodo.7464063

Video supplement

Video related to the study "Spatial variability of Saharan dust deposition revealed through a citizen science campaign" Dumont, Marie; Josse, Beatrice; Gascoin, Simon; Reveillet, Marion https://doi.org/10.5281/zenodo.7457613

Marie Dumont et al.

Viewed

Total article views: 294 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
203 85 6 294 12 1 2
  • HTML: 203
  • PDF: 85
  • XML: 6
  • Total: 294
  • Supplement: 12
  • BibTeX: 1
  • EndNote: 2
Views and downloads (calculated since 12 Jan 2023)
Cumulative views and downloads (calculated since 12 Jan 2023)

Viewed (geographical distribution)

Total article views: 234 (including HTML, PDF, and XML) Thereof 234 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 01 Feb 2023
Download
Short summary
Saharan dust outbreaks have profound effects on ecosystems, climate, health and cryosphere, but the spatial deposition pattern of Saharan dust is poorly known. Following the extreme dust deposition event of February 2021 across Europe, a citizen science campaign was launched to sample dust on snow over the Pyrenees and the European Alps. This campaign triggered wide interest and over 100 samples. The samples revealed the high variability of the dust properties within a single event.