«The latest addition is a variable resolution UK model (UKV) which has a high resolution inner domain (1.5
km grid boxes) over the area of forecast interest, separated from a coarser grid (4 km) near the boundaries by a variable resolution transition zone.
Many GCM modelling groups have been increasing the resolution from ~ 250
km grid boxes 7 years ago to ~ 100
km grid boxes today.
Many GCM modelling groups increasing the resolution from ~ 250
km grid boxes 7 years ago to ~ 100
km grid boxes today.
Not exact matches
Obviously, in an actual cloud, the relative humidity is close to 100 %, but at a
grid box scale of 100's of
km, the mean humidity — even if there are quite a few clouds — will be substantially less.
Whether the activity of cumulus convection is determined by the variables averaged over the
grid box of numerical models (100
km scale for typical GCMs, 20
km scale in the case of «high resolution» GCM of MRI).
Climate models can not simulate clouds explicitly because their dynamic scales (10 - 100 m) are much smaller than typical length scales of climate model
grid boxes (25 - 100
km).
The atmospheric component of CM2.5 has similar physics as CM2.1, but uses
grid box cells that are 50
Km on a side, versus approximately 200
Km in CM2.1.