[ncl-talk] regridding wrf and trmm

[Dennis Shea]

For high temporal precipitation .... You should perform 'conservative'
interpolation. Not bilinear

On Mon, Jun 8, 2015 at 12:18 PM, Appo derbetini <appopson4 at gmail.com> wrote:

> Hi,
>
> I am using   cdo <https://code.zmaw.de/projects/cdo>  to do it following
> lines below
>
> cdo  sellonlatbox,minlon,maxlon,minlat,maxlat       TRMM_file.nc
> selected_region.nc   (selection of region inside WRF simulation zone)
>
> cdo griddes    selected_region.nc   >  grid_TRMM              (creation
> of description file)
>
> cdo remapcon,grid_TRMM    WRF_input.nc      WRF_Interpolated.nc
> (interpolation to TRMM grid)
>
> Regards
>
> 2015-06-08 14:58 GMT+01:00 Dennis Shea <shea at ucar.edu>:
>
>> Please respond only to ncl-talk.
>>
>> ---
>>
>> "Hey but wrf and trmm grids are of differnt type. I cannot substract one
>> from another."
>>
>> That is why you have to interpolate ... then subtract the interpolated
>> values.
>>
>>
>>
>>
>>
>> On Mon, Jun 8, 2015 at 7:56 AM, Saurabh Singh <
>> saurabhsingh123op at gmail.com> wrote:
>>
>>> Hey but wrf and trmm grids are of differnt type. I cannot substract one
>>> from another.
>>> On 8 Jun 2015 21:52, "Dennis Shea" <shea at ucar.edu> wrote:
>>>
>>>> [1] Interpolate the higher resolution grid to the lower resolution
>>>>
>>>> [2] http://www.ncl.ucar.edu/Applications/ESMF.shtml
>>>>      See, for example, example 29
>>>>
>>>> On Mon, Jun 8, 2015 at 4:01 AM, Saurabh Singh <
>>>> saurabhsingh123op at gmail.com> wrote:
>>>>
>>>>>
>>>>> i have my WRF output having resolution of 50 km X 50 km whereas my
>>>>> TRMM file is of resolution 25 degree X 25 degree. i want to either re grid
>>>>> WRF output to 25 km and then substract trmm precipitation or regrid TRMM
>>>>> precipitation and substract is from WRF to check the bias in precipitation.
>>>>>
>>>>> can anyone suggest which one is better and methodology to do the above
>>>>> in NCL ?
>>>>>
>>>>> ncl version : 6.3.0
>>>>> OS: UBUNTU 15.04
>>>>>
>>>>> --
>>>>> With regards
>>>>> Saurabh Kumar singh
>>>>>
>>>>>  *P** : * *Please consider the environment before printing this
>>>>> e-mail*
>>>>>
>>>>>
>>>>>
>>>>>
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>>>>>
>>>>
>>
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