Dear RegCM users

We are simulating the summer time monsoon rainfall of south-eastern part of Iran. We have already changed the cumulus parameterization and used two schemes such as Grell,A.S and Grell,FC. But the precipitations are highly different from observation. I mean, RegCM overestimate the summer rainfall by around 10 times the observed. It is necessary to point out temperature result are reasonable acceptable.

How can I solve this problem?

Thank you in advance.

Maryam karimian