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cdo remapnn (Abort): Unsupported target grid type (generic)!

Added by Jeisson Javier Leal Rojas over 1 year ago

I recently downloaded data from https://appeears.earthdatacloud.nasa.gov (Evapotranpiration and Latent heat flux) in MOD16A2 data.

This is how the data looks when ncdump:

netcdf MOD16A2GF.061_500m_2000_1 {
dimensions:
    time = 23 ;
    lat = 35742 ;
    lon = 77187 ;
variables:
    byte crs ;
        crs:grid_mapping_name = "latitude_longitude" ;
        crs:_CoordinateAxisTypes = "GeoX GeoY" ;
        crs:spatial_ref = "GEOGCS[\"unknown\",DATUM[\"WGS_1984\",SPHEROID[\"WGS 84\",6378137,298.257223563,AUTHORITY[\"EPSG\",\"7030\"]],AUTHORITY[\"EPSG\",\"6326\"]],PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AXIS[\"Longitude\",EAST],AXIS[\"Latitude\",NORTH]]" ;
        crs:epsg_code = 4326LL ;
        crs:horizontal_datum_name = "WGS84" ;
        crs:semi_major_axis = 6378137LL ;
        crs:inverse_flattening = 298.257223563 ;
        crs:longitude_of_prime_meridian = 0. ;
    int time(time) ;
        time:standard_name = "time" ;
        time:axis = "T" ;
        time:calendar = "julian" ;
        time:units = "days since 2000-01-01 00:00:00" ;
    double lat(lat) ;
        lat:standard_name = "latitude" ;
        lat:units = "degrees_north" ;
        lat:_CoordinateAxisType = "GeoY" ;
        lat:axis = "Y" ;
    double lon(lon) ;
        lon:standard_name = "longitude" ;
        lon:units = "degrees_east" ;
        lon:_CoordinateAxisType = "GeoX" ;
        lon:axis = "X" ;
    short ET_500m(time, lat, lon) ;
        ET_500m:_FillValue = 32767s ;
        ET_500m:coordinates = "time lat lon" ;
        ET_500m:grid_mapping = "crs" ;
        ET_500m:valid_min = -32767s ;
        ET_500m:valid_max = 32700s ;
        ET_500m:long_name = "MODIS Gridded 500m 8-day Composite Evapotranspiration (ET)" ;
        ET_500m:units = "kg/m^2/8day" ;
        ET_500m:scale_factor_err = 0. ;
        ET_500m:add_offset_err = 0. ;
        ET_500m:calibrated_nt = 22 ;
        ET_500m:scale_factor = 0.1 ;
        ET_500m:add_offset = 0. ;
    short LE_500m(time, lat, lon) ;
        LE_500m:_FillValue = 32767s ;
        LE_500m:coordinates = "time lat lon" ;
        LE_500m:grid_mapping = "crs" ;
        LE_500m:valid_min = -32767s ;
        LE_500m:valid_max = 32700s ;
        LE_500m:long_name = "MODIS Gridded 500m 8-day Composite latent heat flux (LE)" ;
        LE_500m:units = "MJ/m^2/day" ;
        LE_500m:scale_factor_err = 0. ;
        LE_500m:add_offset_err = 0. ;
        LE_500m:calibrated_nt = 22 ;
        LE_500m:scale_factor = 0.01 ;
        LE_500m:add_offset = 0. ;
    short ET_QC_500m(time, lat, lon) ;
        ET_QC_500m:_FillValue = 255s ;
        ET_QC_500m:coordinates = "time lat lon" ;
        ET_QC_500m:grid_mapping = "crs" ;
        ET_QC_500m:valid_min = 0s ;
        ET_QC_500m:valid_max = 254s ;
        ET_QC_500m:long_name = "ET_QC_500m" ;
        ET_QC_500m:units = "none" ;

In addition I have a tgt_grid.txt that looks like:

#
# gridID 1
#
gridtype  = lonlat
gridsize  = 5040000
xname     = lon
xlongname = longitude
xunits    = degrees_east
yname     = lat
ylongname = latitude
yunits    = degrees_north
xsize     = 3600
ysize     = 1400
xfirst    = -179.95
xinc      = 0.1
yfirst    = 83.95
yinc      = -0.1

I am trying to do remapnn:

cdo remapnn,tgt_grid.txt in.nc out.nc

And I am getting the error:

 * cdo    remapnn (Abort): Unsupported target grid type (generic)!*

Any ideas what the problem may be?


Replies (8)

RE: cdo remapnn (Abort): Unsupported target grid type (generic)! - Added by Jeisson Javier Leal Rojas over 1 year ago

I have downloaded a sample test file and uploaded it here

test_WGS84.nc (79.7 KB) test_WGS84.nc

RE: cdo remapnn (Abort): Unsupported target grid type (generic)! - Added by Karin Meier-Fleischer over 1 year ago

Hi Jeisson,

I'm not able to reproduce the error. Which CDO version are you using?

With CDO 2.0.5:

cdo -remapnn,tgt_grid.txt test_WGS84.nc outfile.nc
Warning (attribute_to_calendar): calendar >julian< unsupported!
cdo    remapnn: Nearest neighbor weights from lonlat (105x109) to lonlat (3600x1400) grid, with source mask (4853)
cdo    remapnn: Nearest neighbor weights from lonlat (105x109) to lonlat (3600x1400) grid, with source mask (5539)
cdo    remapnn: Processed 171675 values from 3 variables over 5 timesteps [114.80s 1162MB].

cdo sinfon outfile.nc
   File format : NetCDF4
    -1 : Institut Source   T Steptype Levels Num    Points Num Dtype : Parameter name
     1 : unknown  AppEEARS v instant       1   1   5040000   1  I16  : ET_500m       
     2 : unknown  AppEEARS v instant       1   1   5040000   1  I16  : LE_500m       
     3 : unknown  AppEEARS v instant       1   1   5040000   1  I16  : ET_QC_500m    
   Grid coordinates :
     1 : lonlat                   : points=5040000 (3600x1400)
                              lon : -179.95 to 179.95 by 0.1 degrees_east  circular
                              lat : 83.95 to -55.95 by -0.1 degrees_north
   Vertical coordinates :
     1 : surface                  : levels=1
   Time coordinate :
                             time : 5 steps
     RefTime =  2000-01-01 00:00:00  Units = days  Calendar = standard
  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss
  2022-11-25 00:00:00  2022-12-03 00:00:00  2022-12-11 00:00:00  2022-12-19 00:00:00
  2022-12-27 00:00:00

RE: cdo remapnn (Abort): Unsupported target grid type (generic)! - Added by Jeisson Javier Leal Rojas over 1 year ago

Hi Karin,

When doing cod --version:
─╯

Climate Data Operators version 2.2.0 (https://mpimet.mpg.de/cdo)
System: aarch64-apple-darwin22.4.0
CXX Compiler: clang++ -std=gnu++17 -g -O2  -pthread
CXX version : Apple clang version 14.0.3 (clang-1403.0.22.14.1)
C Compiler: clang -g -O2  -pthread -pthread
C version : Apple clang version 14.0.3 (clang-1403.0.22.14.1)
F77 Compiler: gfortran -g -O2
F77 version : GNU Fortran (Homebrew GCC 13.1.0) 13.1.0
Features: 16GB 10threads c++17 Fortran pthreads HDF5 NC4/HDF5 OPeNDAP sz
Libraries: yac/2.6.1 NetCDF/4.9.2 HDF5/1.14.1(h1.14.0)
CDI data types: SizeType=size_t
CDI file types: srv ext ieg grb1 grb2 nc1 nc2 nc4 nc4c nc5 nczarr
     CDI library version : 2.2.1
 cgribex library version : 2.1.0
 ecCodes library version : 2.30.0
  NetCDF library version : 4.9.2 of May  1 2023 09:08:29 $
    exse library version : 1.5.0
    FILE library version : 1.9.1

I tried it as well on a cluster now. This is the version in a cluster:

Climate Data Operators version 2.0.4 (https://mpimet.mpg.de/cdo)
System: x86_64-pc-linux-gnu
CXX Compiler: /sw/spack-workplace/spack/lib/spack/env/gcc/g++ -std=gnu++14 -g -O2 -fopenmp -pthread
CXX version : g++ (Spack GCC) 11.2.0
C Compiler: /sw/spack-workplace/spack/lib/spack/env/gcc/gcc -g -O2 -fopenmp -pthread -pthread
C version : gcc (Spack GCC) 11.2.0
F77 Compiler: /sw/spack-workplace/spack/lib/spack/env/gcc/gfortran -g -O2
F77 version : GNU Fortran (Spack GCC) 11.2.0
Features: 503GB 256threads C++14 OpenMP45 Fortran PTHREADS HDF5 NC4/HDF5/threadsafe OPeNDAP SZ UDUNITS2 PROJ XML2 MAGICS FFTW3 AVX2
Libraries: HDF5/1.12.1 proj/8.1.0 xml2/2.9.7 magics/4.9.3
CDI data types: SizeType=size_t  DateType=int64_t
CDI file types: srv ext ieg grb1 grb2 nc1 nc2 nc4 nc4c nc5
     CDI library version : 2.0.4
 cgribex library version : 2.0.1
 ecCodes library version : 2.21.0
  NetCDF library version : 4.8.1 of Feb 17 2022 15:36:58 $
    hdf5 library version : 1.12.1 threadsafe
    exse library version : 1.4.2
    FILE library version : 1.9.1

And I've got this results when doing it in the cluster

cdo -remapnn,tgt_grid.txt test_WGS84.nc outfile.nc

Warning (attribute_to_calendar): calendar >julian< unsupported!
cdo    remapnn: Nearest neighbor weights from lonlat (105x109) to lonlat (3600x1400) grid, with source mask (4853)
cdo    remapnn: Nearest neighbor weights from lonlat (105x109) to lonlat (3600x1400) grid, with source mask (5539)
ccdo    remapnn: Processed 171675 values from 3 variables over 5 timesteps [114.03s 1021MB].

I assume I will have to update my CDO version.
Also, any comments related to the unsupported calendar?

Cheer,

Jeisson

RE: cdo remapnn (Abort): Unsupported target grid type (generic)! - Added by Karin Meier-Fleischer over 1 year ago

Change the calendar to standard calendar (proleptic_gregorian):

cdo -setcalendar,standard infile outfile

RE: cdo remapnn (Abort): Unsupported target grid type (generic)! - Added by Jeisson Javier Leal Rojas over 1 year ago

Thanks for the support. One last question

I think I can do CDO taks in parallel. For example

cdo -P 16 remapnn,tgt_grid.txt nfile outfile
cdo -P 16 -setcalendar,standard infile outfile

Could you please point me where I can find more information about this -P.
I would like to know a bit more

regards,

Jeisson Leal.

RE: cdo remapnn (Abort): Unsupported target grid type (generic)! - Added by Jeisson Javier Leal Rojas over 1 year ago

Thanks a lot Karin!

One last question if I may ask.

I was thinking to use cdo -P 16 -setcalendar and cdo -P 16 remapnn,tgt_grid.txt all in one line command instead of the two lines I presented before.
I want to avoid creating two nc files (one for each CDO command line). Is this possible?
I tried some combinations, but I failed.

Cheers,

Jeisson Leal.

RE: cdo remapnn (Abort): Unsupported target grid type (generic)! - Added by Karin Meier-Fleischer over 1 year ago

Hm, the following operator chaining works:

cdo -P 16 -remapnn,tgt_grid.txt -setcalendar,standard test_WGS84.nc outfile.nc
    (1-8/8)