Hi all,
My coupled model version is WRFv4.5-CMAQv5.4. When the aerosol radiation feedback was turned on, I have noticed changes in U, V as well as SWDNBC in wrfout. My question is: are there any explanations or tables listing which variables will respond to the radiation feedback in two-way coupled model, such as PBLH? So that I can anticipate in advance the meteorological variables that can be analyzed.
Liu
As soon as you have even very slight differences in anything (even very slight round-=off differences) , the convective scheme will be affected (convective timing, location, etc.), and that will feed back into changes of everything.
Needless to say, that makes validation of numerical optimizations very difficult 
Hi Liu,
When you turn on feedback, it means turning on aerosol radiative direct shortwave effect (ARDSE). The present of aerosol in the atmosphere, it will reduce the energy reaching the ground either by scattering or absorbing. The implementation of ARDSE is taking account of such aerosol action. At the end, any variable which is related to or associated with the amount of energy reaching the ground, in WRF will be affected, e.g. temperature, PBL height, SWDOWN, etc. To validate the feedback effect, just like validating other features of the model such as updating the PBL scheme or even changing the chemical mechanism, the standard method is to compare the result against observation. Cheers, David