Articles | Volume 16, issue 4
The Cryosphere, 16, 1281–1298, 2022
https://doi.org/10.5194/tc-16-1281-2022
The Cryosphere, 16, 1281–1298, 2022
https://doi.org/10.5194/tc-16-1281-2022
Research article
11 Apr 2022
Research article | 11 Apr 2022

Propagating information from snow observations with CrocO ensemble data assimilation system: a 10-years case study over a snow depth observation network

Bertrand Cluzet et al.

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Short summary
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.