Simulation data:

1) Bolam model (nickname "Bolam") with the soil-vegetation-snow parametrisation of "Pochva" scheme (version 2017) horizontal resolution 0.075 degrees in rotated coordinates (about 8 km), 50 atmospheric levels
2) Moloch model (nikcname "Moloch") version 2017, horizontal resolution 0.011 degrees in rotated coordinates (about 1.2 km), 50 atmospheric levels
3) IFS-ECMWF (nickname "IFS") Cycle 43, horizontal resolution 0.125 degrees (about 15 km), 91 atmospheric levels
4) Bolam model (nickname "Bolam-old") version 2017, horizontal resolution 0.075 degrees in rotated coordinates (about 8 km), 50 atmospheric levels with old soil-vegetation-snow parametrisation

Observation data:

WMO GTS, Synop-Land, ECMWF archive
Data at 0, 3, 6, 9, 12, 15, 18, 21 UTC

2 sets of observation points:

Stations in the whole Bolam domain (about 3300 points)

Italian stations (about 150 points)

Time series of errors as a function of forecast term

Errors in observation points for various forecast terms