This option can be activated by "USE_SATCV" namelist switch. The default is FALSE.
It extends the control variable (CV) to the Skin Temperature (Ts) and the Cloud Cover for a set of vertical model levels. This new part of the CV is:
- at observation location (no interpolation from model to observation)
- a "sink" variable, i.e. it is only used to compute the CRTM radiative transfer. The analysis increments for this part of the CV will not feedback to WRF analysis and subsequent forecast.