[RegCNET] CRU2RCM.f

[Rauscher Sara A]

Hi,

Hopefully this won't confuse anyone, but I thought I should point out
that there are some additional options for converting data from netCDF
to Grads binary (and vice versa) using Grads. We can add these to Bi's
excellent advice.

3. Open the netCDF files in grads, and use
set gxout fwrite
to write out the file in binary format (instead of using ncdump). You
will have to create a grads format control file. If you are already
familiar with this option in Grads then it might be easy for you to do.
You can see fwrite options at
http://grads.iges.org/grads/gadoc/gradcomdsetfwrite.html

4. Use the script lats4d.gs in Grads to write out the data in Grads
binary format. Lats4d is available at
http://gmao.gsfc.nasa.gov/software/lats4d/
and there are instructions for its use.

Lats4d is also a super-easy way to convert binary data that can be read
in Grads into netCDF format, so it's really worth checking it out. One
caveat: you cannot have "pdef" in your .ctl file when you go from binary
to netCDF, so if you have pdef you have to remove it and make a dummy
control file.

Let me know if you have questions.

sara

XUNQIANG BI wrote:
>
> Hi, Mau Nguyen Dang:
>
> One error related to the CRUELV.CDF file (CRU elevation)
> in cru.param is fixed, by following changes in cru.param.
>
> PARAMETER (nfld=9) ! instead of 10
>
> and remove the 10th field in the three DATA sentences.
>
> To view the fields (netCDF format) in GrADS in a right way,
> you have to use one of the following two methods:
>
> 1. check the webpage (Sara made) at:
> http://users.ictp.it/RegCNET/tut4.html
>
> And use the methods provided related to the CRU output by
> create the GrADS descriptor files, like:
>
> http://users.ictp.it/RegCNET/crupre
> http://users.ictp.it/RegCNET/crutmp
>
> 2. use ncdump to convert the fields to a direct-access binary
> format, then write a simple GrADS descriptor file.
>
> Hope it helps,
> Xunqiang Bi
>
> On Thu, 6 Sep 2007, Mau Nguyen Dang wrote:
>
>> Dear Bi/Colleagues,
>>
>> I have some problems in CRU2RCM.f that I can not understand:
>>
>> I run RegCM3 for ?Sensitivity of Dynamical quantities to horizontal
>> resolution in a climate simulation over Viet Nam?. In my Experiment I
>> use
>> three different horizon resolutions. For this aim, I run cruPGI5.x
>> script
>> to integrate the CRU DATA into OUTPUT DATA of RegCM3. In the first, I
>> think
>> It will be well But When I use Grads Software to draw ?CRU DATA ? OUTPUT
>> RegCM? not well.
>>
>> However, after that I am stil trying to practise running RegCM and
>> still run
>> cruPGI5.x, but I still have some wrong results.
>>
>> Can you help in explaining this problem that may help me in
>> understanding
>> that why.
>>
>> Kind Regards,
>>
>> Mau Nguyen Dang
>>
>>
>>
>> Center for Meteorology and Climatology
>>
>> National Institute of Meteorology, Hydrology and Environment, Viet Nam.
>>
>> No. 5/62 Nguyen Chi Thanh St., Hanoi, Vietnam
>>
>> ============================================================================
>>
>> =================================
>>
>>
>>
>>
>>
>>
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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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>
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-- 

Dr. Sara A. Rauscher
Earth System Physics Section 
The Abdus Salam International Centre for Theoretical Physics
Strada Costiera 11 
34014 Trieste ITALY
ph: +39 040 2240 225 fax: +39 040 2240 449
email: srausche at ictp.it