[ncl-talk] Why the source grid be recognized as curvilinear grid?

林祥 xianglin72 at icloud.com
Sun Dec 18 10:14:18 MST 2016


Hi, all

    I’m regridding multiple CMIP5 model output with ESMF_regrid function,  among all the data file, lat/lon coordinate array  can be 1-dimension or 2 dimension.

Now I met a problem ,  Please see the below message output from the scripts:
 

(0)	4.     /data1/linx/CMIP5_SIC/historical/BNU-ESM/sic_OImon_BNU-ESM_historical_r1i1p1_185001-200512.nc    ; ( Loop 4 )


Variable: Opt
Type: logical
Total Size: 4 bytes
            1 values
Number of Dimensions: 1
Dimensions and sizes:	[1]
Coordinates: 
Number Of Attributes: 9
  Debug :	True
  PrintTimings :	True
  DstGridLon :	<ARRAY of 360 elements>
  DstGridLat :	<ARRAY of 180 elements>
  DstGridMask :	<ARRAY of 64800 elements>
  SrcGridMask :	<ARRAY of 72000 elements>
  ForceOverwrite :	True
  DstFileName :	destination_grid_file.nc
  SrcFileName :	source_grid_file.nc
(0)	True
(0)	Generating interpolation weights from CMIP5 to
(0)	World 1 degree grid using the bilinear method.
(0)	get_src_grid_info: source lat dims = (200,360)
(0)	get_src_grid_info: source lon dims = (200,360)
(0)	get_src_grid_info: source grid type is 'curvilinear'
(0)	curvilinear_to_SCRIP: calculating grid corners...
(0)	curvilinear_to_SCRIP: no lat values are at the poles, so
(0)	       calculating grid corners using
(0)	       calc_SCRIP_corners_noboundaries...
(0)	calc_SCRIP_corners_noboundaries
(0)	     min/max original lat: -81.5003/89.4879
(0)	     min/max original lon: 0.0457764/359.949
(0)	calc_SCRIP_corners_noboundaries
(0)	     min/max Extlat2d: -82.5003/90.4798
(0)	     min/max Extlon2d: -358.806/360.995
(0)	calc_SCRIP_corners_noboundaries
(0)	     min/max ExtGridCenter_lat: -82.0003/89.9838
(0)	     min/max ExtGridCenter_lon: -179.22/360.397
(0)	=====> CPU Elapsed Time: curvilinear_to_SCRIP: 0.164974 seconds <=====
(0)	get_dst_grid_info: destination lat dims = (180)
(0)	get_dst_grid_info: destination lon dims = (360)
(0)	curvilinear_to_SCRIP: calculating grid corners...
(0)	curvilinear_to_SCRIP: no lat values are at the poles, so
(0)	       calculating grid corners using
(0)	       calc_SCRIP_corners_noboundaries...
(0)	calc_SCRIP_corners_noboundaries
(0)	     min/max original lat: -89.5/89.5
(0)	     min/max original lon: -179.5/179.5
(0)	calc_SCRIP_corners_noboundaries
(0)	     min/max Extlat2d: -90.5/90.5
(0)	     min/max Extlon2d: -180.5/180.5
(0)	calc_SCRIP_corners_noboundaries
(0)	     min/max ExtGridCenter_lat: -90/90
(0)	     min/max ExtGridCenter_lon: -180/180
(0)	=====> CPU Elapsed Time: rectilinear_to_SCRIP: 0.155979 seconds <=====
(0)	ESMF_regrid_gen_weights: number of processors used: 1
(0)	--------------------------------------------------
(0)	ESMF_regrid_gen_weights: the following command is about to be executed on the system:
(0)	'ESMF_RegridWeightGen --source source_grid_file.nc --destination destination_grid_file.nc --weight ESMF_regrid_wgt_bilinear.nc --method bilinear -i'
(0)	--------------------------------------------------
(0)	ESMF_regrid_gen_weights: output from 'ESMF_RegridWeightGen':
(0)	      Starting weight generation with these inputs: 
(1)	        Source File: source_grid_file.nc
(2)	        Destination File: destination_grid_file.nc
(3)	        Weight File: ESMF_regrid_wgt_bilinear.nc
(4)	        Source File is in SCRIP format
(5)	        Source Grid is a global grid
(6)	        Source Grid is a logically rectangular grid
(7)	        Destination File is in SCRIP format
(8)	        Destination Grid is a global grid
(9)	        Destination Grid is a logically rectangular grid
(10)	        Regrid Method: bilinear
(11)	        Pole option: ALL
(12)	        Ignore unmapped destination points
(13)	     
(14)	      Completed weight generation successfully.
(15)	     
(0)	--------------------------------------------------
(0)	ESMF_regrid_gen_weights: 'ESMF_RegridWeightGen' was successful.
(0)	=====> CPU Elapsed Time: ESMF_regrid_gen_weights: 0.0169983 seconds <=====
(0)	ESMF_regrid_with_weights: regridding using interpolation weights ...
(0)	ESMF_regrid_with_weights: warning: destination grid is not
(0)	    completely covered by the source grid. This is not an error.
(0)	    It just means your destination grid covers a larger area
(0)	    than your source grid.
(0)	ESMF_regrid_with_weights: Source Grid:
(0)	                          rank:      2
(0)	                          dimensions: 200 360
(0)	                          original source rank: 3
(0)	                          latitude min/max: -81.50032043457031/89.48786163330078
(0)	                          longitude min/max:0.0457763671875/359.9493103027344
(0)	ESMF_regrid_with_weights: Destination Grid:
(0)	                          dimensions: 180 360
(0)	                          latitude min/max: -89.5/89.5
(0)	                          longitude min/max:-179.5/179.5
(0)	ESMF_regrid_with_weights: retrieving interpolation weights ...
(0)	ESMF_regrid_with_weights: calling sparse_matrix_mult to apply weights...
(0)	ESMF_regrid_with_weights: dstData
(0)	                          Dimensions: 1872 180 360
(0)	                          minSrcData: 0
(0)	                          maxSrcData: 99.9994
(0)	                          minDstData: -2.50832e-12
(0)	                          maxDstData: 99.9981
(0)	=====> CPU Elapsed Time: ESMF_regrid_with_weights: 122.265 seconds <=====

Variable: thetao_regrid
Type: float
Total Size: 485222400 bytes
            121305600 values
Number of Dimensions: 3
Dimensions and sizes:	[time | 1872] x [lat | 180] x [lon | 360]
Coordinates: 
            time: [15.5..56924.5]
            lat: [89.5..-89.5]
            lon: [-179.5..179.5]
Number Of Attributes: 11
  remap :	remapped via ESMF_regrid_with_weights: Bilinear remapping
  standard_name :	sea_ice_area_fraction
  long_name :	Sea Ice Area Fraction
  comment :	fraction of grid cell covered by sea ice.
  units :	%
  cell_methods :	time: mean
  cell_measures :	area: areacello
  history :	2012-04-01T10:38:11Z altered by CMOR: replaced missing value flag (1e+30) with standard missing value (1e+20).
  missing_value :	1e+20
  _FillValue :	1e+20
  associated_files :	baseURL: http://cmip-pcmdi.llnl.gov/CMIP5/dataLocation gridspecFile: gridspec_seaIce_fx_BNU-ESM_historical_r0i0p0.nc areacello: areacello_fx_BNU-ESM_historical_r0i0p0.nc
warning:lbLabelBrOn is not a resource in the given object
warning:lbLabelBrOn is not a resource in the given object

; it’s ok for the curvilinear grid to rectilinear grid for Loop 4


(0)	5.     /data1/linx/CMIP5_SIC/historical/CanCM4/sic_OImon_CanCM4_historical_r1i1p1_196101-200512.nc


Variable: Opt
Type: logical
Total Size: 4 bytes
            1 values
Number of Dimensions: 1
Dimensions and sizes:	[1]
Coordinates: 
Number Of Attributes: 9
  Debug :	True
  PrintTimings :	True
  DstGridLon :	<ARRAY of 360 elements>
  DstGridLat :	<ARRAY of 180 elements>
  DstGridMask :	<ARRAY of 64800 elements>
  SrcGridMask :	<ARRAY of 8192 elements>
  ForceOverwrite :	True
  DstFileName :	destination_grid_file.nc
  SrcFileName :	source_grid_file.nc
(0)	True
(0)	Generating interpolation weights from CMIP5 to
(0)	World 1 degree grid using the bilinear method.          ; ************************************************************
(0)	get_src_grid_info: source lat dims = (64)              ; the lat coordinate of source data is 1-dimension 
(0)	get_src_grid_info: source lon dims = (128)
(0)	get_src_grid_info: source grid type is ‘curvilinear’    ; but recognized as “curvilinear” and report error as below 
                                                                ; ************************************************* 

fatal:Number of dimensions in parameter (1) of (curvilinear_to_SCRIP) is (1), (2) dimensions were expected 
fatal:["Execute.c":8567]:Execute: Error occurred at or near line 3320 in file $NCARG_ROOT/lib/ncarg/nclscripts/esmf/ESMF_regridding.ncl

fatal:["Execute.c":8567]:Execute: Error occurred at or near line 3427 in file $NCARG_ROOT/lib/ncarg/nclscripts/esmf/ESMF_regridding.ncl

fatal:["Execute.c":8567]:Execute: Error occurred at or near line 147 in file esmf_regrid_6_sic.ncl



Thank!


Lin




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