Greetings,
 
In my simulation results the model systematically overestimates precipitation rates
over the midlatitudes north of the eastern Mediterranean region. The effect is
especially strong during the summer but is also present during the other seasons.
We parametrize convective precipitation according to Grell/Fritsch-Chappell using
standard values of parameters. What would be your recommendations for tuning the
configuration.
 
Thanks,
   Simon Krichak