I have a question about the ETA surface layer scheme(sf_sfclay_physics=2) in WRF model. In the wrfout results,some important variables turned out to be zero,for example, the dimensionless height(z/l), drag coefficient(CD), intergrated function for momentum and heat(FM, FH), stability flags(REGIME) and so on. My boundary layer physics use the BouLac scheme(bl_pbl_physics=8). Desolving this problem is important for me to go on my research, any help would be greatly appreciated.
Thanks very much !