Propagating information from snow observations with CrocO ensemble data assimilation system: a 10-years case study over a snow depth observation network
Bertrand Cluzet,Matthieu Lafaysse,César Deschamps-Berger,Matthieu Vernay,and Marie Dumont
Univ.
Grenoble Alpes, Université de Toulouse, Météo-France, CNRS, CNRM, Centre d’études de la Neige,
1441 rue de la Piscine, 38400 Saint-Martin d'Hères, France
WSL – Institute for Snow and Avalanche Research SLF, Davos, Switzerland
Univ.
Grenoble Alpes, Université de Toulouse, Météo-France, CNRS, CNRM, Centre d’études de la Neige,
1441 rue de la Piscine, 38400 Saint-Martin d'Hères, France
Univ.
Grenoble Alpes, Université de Toulouse, Météo-France, CNRS, CNRM, Centre d’études de la Neige,
1441 rue de la Piscine, 38400 Saint-Martin d'Hères, France
Centre d’Etudes Spatiales de la Biosphère, CESBIO, Univ. Toulouse, CNES/CNRS/INRA/IRD/UPS, 31401 Toulouse, France
Matthieu Vernay
Univ.
Grenoble Alpes, Université de Toulouse, Météo-France, CNRS, CNRM, Centre d’études de la Neige,
1441 rue de la Piscine, 38400 Saint-Martin d'Hères, France
Univ.
Grenoble Alpes, Université de Toulouse, Météo-France, CNRS, CNRM, Centre d’études de la Neige,
1441 rue de la Piscine, 38400 Saint-Martin d'Hères, France
Viewed
Total article views: 3,249 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
BibTeX
EndNote
2,258
885
106
3,249
102
160
HTML: 2,258
PDF: 885
XML: 106
Total: 3,249
BibTeX: 102
EndNote: 160
Views and downloads (calculated since 05 Aug 2021)
Cumulative views and downloads
(calculated since 05 Aug 2021)
Total article views: 2,234 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
BibTeX
EndNote
1,650
503
81
2,234
88
145
HTML: 1,650
PDF: 503
XML: 81
Total: 2,234
BibTeX: 88
EndNote: 145
Views and downloads (calculated since 11 Apr 2022)
Cumulative views and downloads
(calculated since 11 Apr 2022)
Total article views: 1,015 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
BibTeX
EndNote
608
382
25
1,015
14
15
HTML: 608
PDF: 382
XML: 25
Total: 1,015
BibTeX: 14
EndNote: 15
Views and downloads (calculated since 05 Aug 2021)
Cumulative views and downloads
(calculated since 05 Aug 2021)
Viewed (geographical distribution)
Total article views: 3,249 (including HTML, PDF, and XML)
Thereof 3,154 with geography defined
and 95 with unknown origin.
Total article views: 2,234 (including HTML, PDF, and XML)
Thereof 2,179 with geography defined
and 55 with unknown origin.
Total article views: 1,015 (including HTML, PDF, and XML)
Thereof 975 with geography defined
and 40 with unknown origin.
The mountainous snow cover is highly variable at all temporal and spatial scales. Snow cover models suffer from large errors, while snowpack observations are sparse. Data assimilation combines them into a better estimate of the snow cover. A major challenge is to propagate information from observed into unobserved areas. This paper presents a spatialized version of the particle filter, in which information from in situ snow depth observations is successfully used to constrain nearby simulations.
The mountainous snow cover is highly variable at all temporal and spatial scales. Snow cover...
