[MITgcm-support] Negative Specific Humidity

[Yuan Lian]

Hi,

I am running atmospheric model with water vapor (as tracer). Variable 
"salt" will be specific humidity in this case (accroding to MITgcm 
manual). When I ran the model, there were negative values of specific 
humidity. I found there is a solution for this in "fizhi" package, where 
a filling algorithm is applied. Could anyone explain how it works?

I am not going to use fizhi package at current stage, so the best 
solution is to understand how this filling algorithm works, then I can 
add it to my atmospheric model.

Thanks!

Yuan