[RegCNET] setup RegCM3 for 360 day ICBC

[Moetasim Ashfaq]

Hi Jagan,

You should check regcnet archives for my email to Maurice on Feb 23,  
which includes working CCSM code as well as most of the information  
needed to run the ICBC with CCSM data. In addition to the instructions  
in that email you should make following changes:

Line 261 in CCSM.f
1948 should be changed to the start year of time "units" in CCSM data.  
This can be checked by using ncdump on any of the ccsm netcdf files.
Line 438 in SST_CCSM.f
atime should be equal to the number of time steps in your SST data file.

Moet



On Mar 28, 2010, at 7:51 PM, jagan TNAU wrote:

> Dear Xunqiang Bi,
>
> I have CCSM data for Asian domain. Other than the changes you  
> mentioned  whether data sets of CCSM need to be modified because I  
> believe CCSM uses Gaussian grid.
>
> Similarly in the case of HadCM3 the data sets are prepared to run  
> under UK Met Office PRECIS regional model. Is there any modification  
> required in the data as it uses rotated lat-lon.
>
> Or other words in which DATTYP I have to set in domain.param.
>
> On Mon, Mar 29, 2010 at 1:18 AM, bixq <bixq at ictp.it> wrote:
>
> Step I, ICBC.f  (under RegCM/PreProc/ICBC)
>
>  in ICBC.f, find the SUBROUTINE INITDATE, set all 12 month to 30 days
>
> NDAY = 30
>
> Step II,  INITDATE.F (under RegCM/Main)
>
>  do the same as above.
>
> Step III, solar1.F (under RegCM/Main)
>  find dayspy, change it to 360 exactly (from original 365.24), like
>
>  Change
>      dayspy = 365.24
>  To
>      dayspy = 360.
>
> Step IV, tgrund.F, (under RegCM/Main), probably this code doesn't  
> matter.
>
>  Change
>      xnua = xnu/365.
>
>  to
>      xnua = xnu/360.
>
> Step V, if you are GrADS user, if you like, you need change all the  
> subroutines related to writing out GrADS CTL files.
>
>
> I guess that you are using HadCM3 output, right.
>
> For the user use CCSM data (CCSM use 365 days, no leap year), he/she
> also have to do the similar modifications.
>
> Regards,
> Xunqiang Bi
>
>
> On Sat, 27 Mar 2010, u.utku.turuncoglu at be.itu.edu.tr wrote:
>
> Hi,
>
> I try to setup a RegCM3 run that uses HadCM output as an initial and
> boundary condition. As you know, the year is defined as 360 day in  
> HadCM
> model and i think that RegCM main code must be modified for this  
> case. I
> do following modifications,
>
> 1 - update dayspy value to 360. in solar1.F.
>
> 2 - comment or delete lines between 24 and 34. I also added  NDAY=30  
> after
> these lines.
>
> I just want to ask that are these modifications correct? Do i need any
> additional steps?
>
> Best regards,
>
> --ufuk
>
>
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>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>  Dr. Xunqiang Bi         email:bixq at ictp.it
>  Earth System Physics Group
>  The Abdus Salam ICTP
>  Strada Costiera, 11
>  P.O. BOX 586, 34100 Trieste, ITALY
>  Tel: +39-040-2240302  Fax: +39-040-2240449
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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>
> -- 
> With regards
>
> Dr.R.Jagannathan	
> Dean (Agriculture),
> Tamil Nadu Agricultural University,
> Vanavarayar Institute of Agriculture,
> NIA Educational Institutions,
> Pollachi - 642 003 India	
>
> PHONE:  Mob: +91 94438 89891
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