Simulation data:

1) Bolam model (version 2014) horizontal resolution 0.075 degrees in rotated coordinates (about 8 km), 50 atmospheric levels
2) IFS-ECMWF (Cycle 40r1) horizontal resolution 0.25 degrees, 91 atmospheric levels (data available for +0h forecast term only)
3) Cosmo-I7 model horizontal resolution 0.065 degrees in rotated coordinates (about 7 km), 40 atmospheric levels
4) Bolam model (version 2013) horizontal resolution 0.1 degrees in rotated coordinates (about 11 km), 50 atmospheric levels, named on plots "Bolam_old"

Observation data:

WMO GTS, Synop-Land, ECMWF archive
Data at 0, 6, 12, 18 UTC

Set of observation points (about 200 points):


Time series of errors as a function of forecast term

BIAS (Systematic error)

RMSE (Root Mean Square Error)

RMSE-BIAS (root mean square error without systematic error)



Errors in observation points for various forecast terms


BIAS        

Bolam

IFS

COSMO-I7

Bolam_old


RMSE        

Bolam

IFS

COSMO-I7

Bolam_old


RMSE-BIAS        

Bolam

IFS

COSMO-I7

Bolam_old