IMS Snow Cover products used to asses ECMWF snow cover (contingency table):

IMS snow cover maps

IMS snow cover time series

SYNOP two-metre temperature:

SYNOP T2m maps

SYNOP T2m time series

SYNOP two-metre relative humidity:

SYNOP RH2m maps

SYNOP RH2m time series

SYNOP snow depth

SYNOP snow depth maps