Re: Regrid T62 data to POP grid

Hi Dennis

Thank you very much. I could resolve the error with the suggested change.

Unfortunately, weightfile seems to be wrong.

Regards
Siva

On Wed, Oct 30, 2013 at 4:57 PM, Dennis Shea <shea@ucar.edu> wrote:

> I am not sure about this but I speculate that the
> variable 'air' on the file is type short.
> It *must* be unscaled prior to use.
>
> short air(time,lat,lon)
> ^^^^^
>
> plus it will have associated attributes named:
> "add_offset" and "scale_factor"
>
> ===
>
> Try:
>
> var = short2flt(f->air)
>
> http://www.ncl.ucar.edu/**Document/Functions/**Contributed/short2flt.shtml<http://www.ncl.ucar.edu/Document/Functions/Contributed/short2flt.shtml>
>
> ===
> The 1st rule of data processing is 'look at your data'.
>
> Please use the following to examimine file contents.
>
> %> ncdump -h air.2m.gauss.1997.nc | less
>
> or
>
> %> ncl_filedump air.2m.gauss.1997.nc | less
>
>
>
> On 10/30/13 11:48 AM, Prasad, Siva wrote:
>
>> Hi all,
>>
>> I am new to NCL. I have generated a weight file for T62
>> (map_T62_to_gx3_bilin_da_**301310.nc)
>>
>> I tried to use the following ncl script to remap to the POP but it shows
>> error
>>
>> load "$NCARG_ROOT/lib/ncarg/**nclscripts/csm/gsn_code.ncl"
>> load "$NCARG_ROOT/lib/ncarg/**nclscripts/csm/gsn_csm.ncl"
>> load "$NCARG_ROOT/lib/ncarg/**nclscripts/csm/contributed.**ncl"
>> load "$NCARG_ROOT/lib/ncarg/**nclscripts/csm/popRemap.ncl"
>>
>> a = addfile("air.2m.gauss.1997.nc"**,"r")
>> var = a->air
>> remap = PopLatLon(var,"T62","gx3","**bilin","da","301310")
>>
>> out=addfile("t_10.nc","c")
>> filedimdef(out,"time",-1,True)
>> out->t10=remap
>>
>> I get the following error
>>
>> (0)
>> (0) create_rmpPopFileName: ./map_T62_to_gx3_bilin_da_**301310.nc
>> fatal:pop_remap: dst_array must be of type float or double
>> fatal:["Execute.c":8128]:**Execute: Error occurred at or near line 462 in
>> file $NCARG_ROOT/lib/ncarg/**nclscripts/csm/popRemap.ncl
>>
>> fatal:["Execute.c":8128]:**Execute: Error occurred at or near line 642 in
>> file $NCAT
>>
>> Thanks and Regards
>> Nandu
>>
>>
>>
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Received on Thu Oct 31 05:35:37 2013