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Added q fields to cam2 changes output?

Dear cam-users


Having changed the code somewhat to include aerosols in the model CAM2.01., FV,
the meteorology of the model changed a little bit. It can not be seen until
at least model day 5 running on a SGI 3000. Even worse running the model one more time with the same setup yielded a slightly different answer First I asssumed I had done
an array bug, but then I found out that only including new trace species
was enough to make this problem occur.

The test I did was to change pcnst to 12 in params.h.
readtrace to false in preset.F90 (hm what happens then to the water cycle?)
nusr_adv to 11 in preset.F90


Have anyone observed this behaviour before?


Øyvind Seland

and
 
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