Hi WRF support,
I am running a real-case simulation using the Noah Land Surface Scheme. I have some questions about the inconsistencies between my met_em, wrfinput, and wrfout files regarding a few land-state variables.
The first one is CANWAT (canopy water). I was looking into my CANWAT field in my met_em and wrfinput files at my model initialization time, I found that the field is the same and non-zero between the two files, which is expected. However, when I looked into my wrfout file at the initial time, CANWAT is zero everywhere. Is this a normal model behavior? Does this mean that the CANWAT variable from the met_em or wrfinput files is not used directly in WRF integration? Based on what I read in module_initialize_real.F, I think it might be used to adjust soil moisture at the initial time, so perhaps soil moisture already accounts for the effects of pre-existing canopy water.
The second question is regarding SM (SMOIS) and ST (TSLB) variables in met_em and wrfinput files. I found that the layer order is flipped for these variables between the two files. I think someone asked about this a while ago (Soil T layers reversed in wrfinput from met_em files). I looked into the module_soil_pre.F code as Ming had suggested in that previous post and I think the layer order is flipped in the subroutines process_soil_real -> init_soil_2_real, which are called in module_initialize_real.F. Can someone please confirm this?
Thank you,
David
I am running a real-case simulation using the Noah Land Surface Scheme. I have some questions about the inconsistencies between my met_em, wrfinput, and wrfout files regarding a few land-state variables.
The first one is CANWAT (canopy water). I was looking into my CANWAT field in my met_em and wrfinput files at my model initialization time, I found that the field is the same and non-zero between the two files, which is expected. However, when I looked into my wrfout file at the initial time, CANWAT is zero everywhere. Is this a normal model behavior? Does this mean that the CANWAT variable from the met_em or wrfinput files is not used directly in WRF integration? Based on what I read in module_initialize_real.F, I think it might be used to adjust soil moisture at the initial time, so perhaps soil moisture already accounts for the effects of pre-existing canopy water.
The second question is regarding SM (SMOIS) and ST (TSLB) variables in met_em and wrfinput files. I found that the layer order is flipped for these variables between the two files. I think someone asked about this a while ago (Soil T layers reversed in wrfinput from met_em files). I looked into the module_soil_pre.F code as Ming had suggested in that previous post and I think the layer order is flipped in the subroutines process_soil_real -> init_soil_2_real, which are called in module_initialize_real.F. Can someone please confirm this?
Thank you,
David