Subject: Re: aerosol effect(aermix.F)
From: Jeffrey T. Kiehl (jtkon@ncar.ucar.edu)
Date: Thu Dec 03 1998 - 14:11:48 MST
CRM users:
I feel compelled to point out that the J. Climate paper describing the CCM3
clearly points out that the assumed aerosol in aermix is one that
uses sulfate properties. Thus, it is not an absorbing aerosol. I would
urge those in the community using CCM to read the published documentation on
the model.
Jeff Kiehl
>Hi:
>
> In CRM/CCM, the aerosols affect the model atmosphere through
>initialization and algorithm in aermix.F. I did some numerical experiment
>with
>it, but the result is confusing. With zero aerosol, I get good agreement with
>other radiative transfer models, however, when I increase the uniform
>background
>aerosol amount in the model atmosphere near surface, the atmospheric
>absorption
>does not increase as significantly as in other models. Besides, the surface
>downward shortwave flux does not change too much either. Is there anyone else
>who has tried similar experiment and get a right one? Please let me know
>what's
>going on.
Jeffrey T. Kiehl
Climate Modeling Section, Head
National Center for Atmospheric Research
P.O. Box 3000
Boulder, CO 80307
voice: 303-497-1350
fax: 303-497-1324
email: jtkon@ncar.ucar.edu
This archive was generated by hypermail 2b27 : Thu Jun 01 2000 - 09:07:53 MDT