[ncl-talk] ESMF_regrid - SrcGridLat/SrcGridLon not recognised

[Will Hobbs]

Hi all

I am using ESMF_regrid to regrid a number of different ocean models (some rectilinear, some not)  onto a common lat/lon grid. To do this I explicitly set the SrcGridLat and SrcGridLon attributes, but sometimes I get the following error message:


(0)  get_src_grid_info: SrcGridType and/or SrcGridLat/SrcGridLon were not set.

(0)            Cannot determine the source grid type.

I’ve done a printVarSummary of both the variable to regrid and the ‘Opt’ (i.e. options variable – see below) and it’s clear that both attributes are there on the Opt file, just not being recognised by ESMF_regrid. I can’t find any reason why they wouldn’t be.

Any ideas?

Will


Variable: var

Type: float

Total Size: 4893696000 bytes

            1223424000 values

Number of Dimensions: 4

Dimensions and sizes:     [time | 1920] x [lev | 30] x [lat | 59] x [lon | 360]

Coordinates:

            time: [674900.5..733269.5]

            lev: [   5..5243.5966796875]

            lat: [-78.5..-20.5]

            lon: [ 0.5..359.5]

Number Of Attributes: 9

  standard_name :    sea_water_salinity

  long_name :   Sea Water Salinity

  units : psu

  cell_methods :     time: mean (interval: 60 seconds)

  cell_measures :    area: areacello volume: volcello

  history :     2011-12-26T07:02:13Z altered by CMOR: replaced missing value flag (1e+35) with standard missing value (1e+20). 2011-12-26T07:02:15Z altered by CMOR: Converted type from 'd' to 'f'. 2011-12-26T07:02:15Z altered by CMOR: Inverted axis: lat.

  missing_value :    1e+20

  _FillValue :  1e+20

  associated_files : baseURL: http://cmip-pcmdi.llnl.gov/CMIP5/dataLocation gridspecFile: gridspec_ocean_fx_FGOALS-g2_historical_r0i0p0.nc areacello: areacello_fx_FGOALS-g2_historical_r0i0p0.nc volcello: volcello_fx_FGOALS-g2_historical_r0i0p0.nc



Variable: Opt

Type: logical

Total Size: 4 bytes

            1 values

Number of Dimensions: 1

Dimensions and sizes:     [1]

Coordinates:

Number Of Attributes: 18

  WgtFileName : /g/data1/ua8/CMIP5_ocean_processing/masks/FGOALS-g2/FGOALS-g2_-80--25_1x1_level0_weights.nc

  SrcGridMask : <ARRAY of 21240 elements>

  RemovePETLog :     True

  RemoveWgtFile :    False

  RemoveDstFile :    True

  RemoveSrcFile :    True

  DstRegional : True

  DstURCorner : ( -25, 359 )

  DstLLCorner : ( -80,  0 )

  DstGridLon :  <ARRAY of 360 elements>

  DstGridLat :  <ARRAY of 56 elements>

  SrcRegional : True

  SrcGridLon :  <ARRAY of 360 elements>

  SrcGridLat :  <ARRAY of 54 elements>

  ForceOverwrite :   True

  InterpMethod :     bilinear

  DstFileName : tmp2.nc

  SrcFileName : tmp1.nc



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