Technical note: Evaluation of snow water equivalent from large-scale land-surface products over Italy

Sarigil, Gökhan; Neri, Mattia; Avanzi, Francesco; Toth, Elena

doi:10.5194/hess-30-6763-2026

Articles | Volume 30, issue 21

https://doi.org/10.5194/hess-30-6763-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/hess-30-6763-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 30, issue 21

Technical note

|

02 Nov 2026

Technical note |

| 02 Nov 2026

Technical note: Evaluation of snow water equivalent from large-scale land-surface products over Italy

Gökhan Sarigil, Mattia Neri, Francesco Avanzi, and Elena Toth

Supplement

https://doi.org/10.5194/hess-30-6763-2026-supplement

Data sets

IT-SNOW: a snow reanalysis for Italy blending modeling, in-situ data, and satellite observations, Version v5 F. Avanzi et al. https://doi.org/10.5281/zenodo.17226478

ERA5-Land hourly data from 1950 to present Copernicus Climate Change Service https://doi.org/10.24381/cds.e2161bac

CERRA-Land sub-daily regional reanalysis data for Europe from 1984 to present Copernicus Climate Change Service https://doi.org/10.24381/cds.a7f3cd0b

ERA5 downscaling @2.2 km over Italy CMCC https://doi.org/10.25424/cmcc/era5-2km_italy

Short summary

The study evaluates Snow Water Equivalent (SWE) estimates from three large-scale land-surface products against a national reference dataset in Italy. Highlighting the performances of the products over the different regions and relating them to the biases in the meteorological forcing, the results provide insights for using SWE estimates in long-term hydro-climatological assessments in Italy and for data selection when evaluating snow dynamics in mountainous regions lacking high-quality benchmark data.