Dear Authors,

I'm writing you concering your manuscript numbered hess-2019-37 and titled "Hyper-resolution ensemble-based snow reanalysis in mountain regions using clustering".

The manuscript presents a procedure that couples a subgrid method with a downscaling tool and data assimilation method with the purpose to improve numerical simulation of surface processes at multiple spatial and temporal scales in ungauged basins.

The manuscript has received two review reports by two estimated colleagues.
Both the two reports appreciated the idea and results presented indicating minor corrections to fix. I agree with them and support the publication of the manuscript
pending minor revision to fix the highlighted issues.

Awaiting for the revised manuscript,
with my best regards,

Carlo De Michele

Dear Authors,

the revised version of the manuscript hess-2019-37 titled "Hyper-resolution ensemble-based snow reanalysis in mountain regions using clustering" accounts properly the requests made by the two Reviewers of clarifications and improvements of presentations.
In light of this, I support the publication of the manuscript in its present form on HESS Journal.

congratulations for this important achievement,
best regards

Carlo De Michele