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Different temperature used in chem and phys


New member
Hi, I have been conducting simulation research using WRF-Chem 4.2. I accidentally noticed that during periods of high summer temperatures, the temperature "t_phy" used in the chemistry component differs from the "t_phy" used in the physics component on the same grid. The former is higher than the latter. I am unsure whether this is related to the conversion from potential temperature to actual temperature in the "chem_prep" subroutine (t_phy(i,k,j) = (t(i,k,j)+t0)*(p_phy(i,k,j)/p1000mb)**rcp).
Below are the temperature values from the "chem" component that I have printed, along with the temperature values from the "grid%t_phy" component: