[gradsusr] finding differences between two runs with ctl files having different number of variables

[Jagabandhu Panda]

Hello Kishore:

         Thanks for your suggestion. I tried half a day to install nco but
failed to do so.....may be I would try in future by spending more
time........but for the time being I would like to use GrADS to resolve
this issue if possible since I am in rush to complete some work!

Best regards
~Jagabandhu

On Wed, Jan 23, 2013 at 7:37 PM, Kishore Babu <kishoreragi at gmail.com> wrote:

> Hi,
>
> Did you try NCO for your problem? It might for you ..
>
> Install nco and just use the command : ncdiff input1.nc input2.nc
> output.nc
>
> Hope it might work..
>
> Cheers,
>
> Kishore
>
>
> On Wed, Jan 23, 2013 at 4:00 PM, Jagabandhu Panda <jagabandhu at gmail.com>wrote:
>
>> Dear users:
>>
>>      Hope you guys are doing fine. I need your help or suggestions to
>> overcome a problem. I have WRF output from two model runs with same
>> horizontal and vertical resolutions. I have two ctl files for this purpose
>> with corresponding dat files for them. For both of these outputs, I have
>> xdef, ydef, zdef and tdef same for both the files. However, the number of
>> variables are different. One contains 166 variables and other 123. Since
>> the model was tuned to produce more variables in the output file in the
>> earlier case, the number of variables are more. However, in the later case
>> it was not tuned to do so. On the other hand, they do produce same
>> diagnostics after post processing.
>>
>> When I want to find the difference between say 2dcape field from these
>> two runs, I am unable to do so as it says:
>>
>> Operation error:  Incompatable grids
>>   Dimension ranges aren't equivalent
>>   Dimension = 1
>>   1st grid range = 5 117   2nd = 5 117
>>   Error ocurred at column 16
>> DISPLAY error:  Invalid expression
>>   Expression = mcape.2-mcape.1
>> EXEC error:  error in metvar.sh.  EXEC stopped.
>> I am unable to point out how to proceed to find the differences each hour
>> for a meteorological variable from the two runs. Could you please suggest
>> some way to overcome it if possible. I will really be thankful to you for
>> this purpose.
>>
>> Thanks and regards
>> -- Jagabandhu
>>
>>
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>>
>
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