[MITgcm-support] External orbiting forces!

[Angela Zalucha]

I am less familiar with the AIM package, so I am sorry I cannot help 
further.

   Angela



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Angela Zalucha, Ph.D.
A. M. Zalucha Consulting

Office located at Southwest Research Institute
1050 Walnut Street, Suite 300
Boulder, CO 80302
USA
(720) 208-7211


http://www.boulder.swri.edu/~angela/
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On Fri, 14 Sep 2012, taimaz.bahadory wrote:

> Thanks for reply Angela;I'm currently using the AIM package. Isn't there any similar add-on for it?
> Obliquity, eccentricity, and precession are all three types of Earth's movement/rotation variations over a long period of
> time (as you may know)
> Anyway, I will take a look at the Fizhi package is AIM doesn't support this phenomena
> 
> Thanks again
> 
> 
> 
> On Fri, Sep 14, 2012 at 1:33 PM, Angela Zalucha <angela at boulder.swri.edu> wrote:
>       Taimaz:
>
>       If you are using the fizhi package,
>       subroutine ASTRO in fizhi_clockstuff.F will calculate the solar zenith angle as a function of obliquity and
>       eccentricity (these constants are set in getcon.F).  But note that they are treated as constants, so you
>       would need to modify the code if they are changing with time (I assume that's what you mean by precession).
> 
>
>       I also have a subroutine to calculate solar zenith angle as a function of obliquity, eccentricity, and
>       ecliptic longitude as part of my planetary model (not part of the public distribution).  The equation for
>       solar zenith angle may be found in e.g. Peixoto and Oort, "Physics of Climate" textbook.
> 
>
>       Angela
> 
> 
> 
>
>       _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-
>       Angela Zalucha, Ph.D.
>       A. M. Zalucha Consulting
>
>       Office located at Southwest Research Institute
>       1050 Walnut Street, Suite 300
>       Boulder, CO 80302
>       USA
>       (720) 208-7211
> 
>
>       http://www.boulder.swri.edu/~angela/
>       _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-
>
>       On Fri, 14 Sep 2012, taimaz.bahadory wrote:
>
>             Hello everybody;
>             Does MITgcm support orbital parameters, such as obliquity, precession, and eccentricity? I want
>             to run a climate model
>             for, say thousands of years, in which the orbital specifications of Earth will change indeed. Is
>             MITgcm a suitable
>             package for such a case?
>             Thanks
> 
> 
> 
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> 
>