[ncl-talk] Problems with ESMF regridding

[Barry Lynn]

Hi:

Perhaps this will help?

precip_o = a_r->A_PCP_GDS5_SFC_acc1h

dims_p = dimsizes(precip_o)

print(dims_p)

latitude := a_r->g5_lat_0

longitude := a_r->g5_lon_1

    system("rm -f destination_grid_bulk_precip_file.nc ")

    system("rm -f source_grid_bulk_precip_file.nc")

; If you are regridding to an unstructured grid, set:


;https://www.ncl.ucar.edu/Applications/Scripts/ESMF_regrid_21.ncl

    Opt = True

; Opt at DstGridType = "unstructured"

;   Opt at DstGridType = "curvilinear"

;   Opt at InterpMethod      = "bilinear"        ;;---Change (maybe)

;   Opt at InterpMethod      = "conserve"        ;;---Change (maybe)

    Opt at InterpMethod      = "patch"        ;;---Change (maybe)


    Opt at WgtFileName       = "wrfout_temp_curv.nc"



    Opt at SrcGridLat        := latitude

    Opt at SrcGridLon        := longitude

    Opt at SrcRegional       = True              ;;--Change (maybe)

;SrcFileName is just the name you want to give the intermediate NetCDF file
that gets created in order

;to describe your source grid to the ESMF_RegridWeightGen program.  If you
don't set this, the

;intermediate file will be called "source_grid_bulk_precip_file.nc".

;I suggest not setting this at all, or, if you do set it, call it something
like "WRF_SCRIP_file.nc".

;   Opt at SrcInputFileName  = src_file          ; optional, but good idea

;   Opt at SrcInputFileName  = a          ; optional, but good idea


    Opt at DstGridLat        = xlat2d(:,:)          ; destination grid

    Opt at DstGridLon        = xlon2d(:,:)

    Opt at DstRegional       = True              ;;--Change (maybe)


    Opt at ForceOverwrite    = True

    Opt at PrintTimings      = False

    Opt at Debug             = True

    grid = ESMF_regrid(precip_o,Opt)     ; Do the regridding

    printMinMax(grid,False)

    printVarSummary(grid)

On Tue, Aug 29, 2023 at 2:11 PM Barry Lynn <barry.h.lynn at gmail.com> wrote:

> Hi:
>
> Are you regridding to a global grid?
>
> On Tue, Aug 29, 2023 at 12:29 PM G.Monte--- via ncl-talk <
> ncl-talk at mailman.ucar.edu> wrote:
>
>> Dears all,
>>
>> I have a problem with the regridding process; when I run the code whit the
>> ESMF_regrid function, I get the following error in the screenshot:
>>
>> Regrid Method: bilinear
>> Pole option: ALL
>> Ignore unmapped destination points
>> Ignore degenerate cells in the input grids
>> Line Type: cartesian
>> Norm Type: dstarea
>> Extrap. Method: none
>>
>> ERROR: Problem on processor            0 . Please see the
>> PET*.RegridWeightGen.Log files for a traceback.
>> --------------------------------------------------
>> ESMF_regrid_gen_weights: 'ESMF_RegridWeightGen' was not successful.
>>
>> ESMF_RegridWeightGenFile Library needed by ESMF not present  - Internal
>> subroutine call returned Error (in the log file)
>>
>> I also looked for this library and I found it, at least I suppose so. How
>> can I solve this problem?
>>
>> Thanks in advance,
>> Giulio Monte
>>
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>
>
> --
>
> Barry H. Lynn, Ph.D
> Senior Scientist, Lecturer,
> The Institute of Earth Sciences,
> The Hebrew University of Jerusalem,
> Givat Ram, Jerusalem 91904, Israel
> Tel: 972 547 231 170
> Fax: (972)-25662581
>
> Weather It Is, LTD
> Weather and Climate Focus
> https://weather-it-is.com <http://weather-it-is.com>
> Jerusalem, Israel
> Local: 02 930 9525
> Cell: 054 7 231 170
> Int-IS: x972 2 930 9525
>
>

-- 

Barry H. Lynn, Ph.D
Senior Scientist, Lecturer,
The Institute of Earth Sciences,
The Hebrew University of Jerusalem,
Givat Ram, Jerusalem 91904, Israel
Tel: 972 547 231 170
Fax: (972)-25662581

Weather It Is, LTD
Weather and Climate Focus
https://weather-it-is.com <http://weather-it-is.com>
Jerusalem, Israel
Local: 02 930 9525
Cell: 054 7 231 170
Int-IS: x972 2 930 9525
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