Dear all,
I have doubt with the output variable "FSDS" in clm2.h0 files. From my perspective, FSDS means the downwelling shortwave raidation land received and FSDS = FSA (absorbed) + FSR (reflected). From biogeophys/BalanceCheckMod.F90, I know that fsa(p) + fsr(p) - (forc_solad(g,1) + forc_solad(g,2) + forc_solai(g,1) + forc_solai(g,2)) should equals 0, which means FSDS = forc_solad + forc_solai. forc_solad and forc_solai are two variables imported from cam component.
I run two parallel cases with the same compset and years, one is the base case and the other is the test case. In test case I modified the albedo and so changed the proportion of FSA and FSR. However, after comparing the FSDS of the two cases, I found the obvious difference. However, it passed the balance check.
Is this reasonable? What are the possible reasons behind this? I need your help. Thanks for all suggestions.
Selena
I have doubt with the output variable "FSDS" in clm2.h0 files. From my perspective, FSDS means the downwelling shortwave raidation land received and FSDS = FSA (absorbed) + FSR (reflected). From biogeophys/BalanceCheckMod.F90, I know that fsa(p) + fsr(p) - (forc_solad(g,1) + forc_solad(g,2) + forc_solai(g,1) + forc_solai(g,2)) should equals 0, which means FSDS = forc_solad + forc_solai. forc_solad and forc_solai are two variables imported from cam component.
I run two parallel cases with the same compset and years, one is the base case and the other is the test case. In test case I modified the albedo and so changed the proportion of FSA and FSR. However, after comparing the FSDS of the two cases, I found the obvious difference. However, it passed the balance check.
Is this reasonable? What are the possible reasons behind this? I need your help. Thanks for all suggestions.
Selena