Articles | Volume 17, issue 12
https://doi.org/10.5194/tc-17-5007-2023
https://doi.org/10.5194/tc-17-5007-2023
Research article
 | 
29 Nov 2023
Research article |  | 29 Nov 2023

Evaluation of snow cover properties in ERA5 and ERA5-Land with several satellite-based datasets in the Northern Hemisphere in spring 1982–2018

Kerttu Kouki, Kari Luojus, and Aku Riihelä

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Short summary
We evaluated snow cover properties in state-of-the-art reanalyses (ERA5 and ERA5-Land) with satellite-based datasets. Both ERA5 and ERA5-Land overestimate snow mass, whereas albedo estimates are more consistent between the datasets. Snow cover extent (SCE) is accurately described in ERA5-Land, while ERA5 shows larger SCE than the satellite-based datasets. The trends in snow mass, SCE, and albedo are mostly negative in 1982–2018, and the negative trends become more apparent when spring advances.