[ncl-talk] grib1 to grib2 and read by NCL

Debasish Hazra debasish.hazra5 at gmail.com
Tue Jan 16 21:14:35 MST 2018


Hi,

I have an input grib file which I converted to Grib2 using 'cnvgrib"
and tried to read in NCL (v6.4). However, it shows only 2 variables,
instead of 6 variables in the input.

Attached is input Grib1 file, which I then converted to grib2 using
"cnvgrib -g12 in.grib out.grib2". Checked with ncl_filedump with the new
out.grib2 which shows only 2 variable names. I run wgrib2 on the new file
which shows all the 6. Attached are ncl_filedump of input and output files.
Any help.

Thanks.
Debasish
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 Copyright (C) 1995-2017 - All Rights Reserved
 University Corporation for Atmospheric Research
 NCAR Command Language Version 6.4.0
 The use of this software is governed by a License Agreement.
 See http://www.ncl.ucar.edu/ for more details.
warning:NclGRIB: Unknown grib parameter number detected (133, center 7, table version 141 grib record 2), using default variable name (VAR_133)

warning:NclGRIB: Unknown grib parameter number detected (134, center 7, table version 141 grib record 3), using default variable name (VAR_134)

warning:NclGRIB: Unknown grib parameter number detected (135, center 7, table version 141 grib record 4), using default variable name (VAR_135)

warning:NclGRIB: Unknown grib parameter number detected (137, center 7, table version 141 grib record 6), using default variable name (VAR_137)

Variable: f
Type: file
filename:	AOD550.Grb.t00z.f00
path:	20150628/AOD550.Grb.t00z.f00
   file global attributes:
   dimensions:
      g4_lat_0 = 190
      g4_lon_1 = 384
   variables:
      float C_WAT_GDS4_EATM ( g4_lat_0, g4_lon_1 )
         center :	US National Weather Service - NCEP (WMC)
         long_name :	Cloud water
         units :	kg/m^2
         _FillValue :	1e+20
         level_indicator :	200
         gds_grid_type :	4
         parameter_table_version :	2
         parameter_number :	76
         model :	Analysis from GDAS (Global Data Assimilation System)
         level :	0
         forecast_time :	0
         forecast_time_units :	hours
         initial_time :	06/28/2015 (00:00)

      float AOD_GDS4_EATM ( g4_lat_0, g4_lon_1 )
         center :	US National Weather Service - NCEP (WMC)
         long_name :	Aerosol optical depth
         units :	non-dim
         _FillValue :	1e+20
         level_indicator :	200
         gds_grid_type :	4
         parameter_table_version :	141
         parameter_number :	129
         model :	Analysis from GDAS (Global Data Assimilation System)
         level :	0
         forecast_time :	0
         forecast_time_units :	hours
         initial_time :	06/28/2015 (00:00)

      float VAR_133_GDS4_EATM ( g4_lat_0, g4_lon_1 )
         center :	US National Weather Service - NCEP (WMC)
         long_name :	unknown variable name
         units :	unknown
         _FillValue :	1e+20
         level_indicator :	200
         gds_grid_type :	4
         parameter_table_version :	141
         parameter_number :	133
         model :	Analysis from GDAS (Global Data Assimilation System)
         level :	0
         forecast_time :	0
         forecast_time_units :	hours
         initial_time :	06/28/2015 (00:00)

      float VAR_134_GDS4_EATM ( g4_lat_0, g4_lon_1 )
         center :	US National Weather Service - NCEP (WMC)
         long_name :	unknown variable name
         units :	unknown
         _FillValue :	1e+20
         level_indicator :	200
         gds_grid_type :	4
         parameter_table_version :	141
         parameter_number :	134
         model :	Analysis from GDAS (Global Data Assimilation System)
         level :	0
         forecast_time :	0
         forecast_time_units :	hours
         initial_time :	06/28/2015 (00:00)

      float VAR_135_GDS4_EATM ( g4_lat_0, g4_lon_1 )
         center :	US National Weather Service - NCEP (WMC)
         long_name :	unknown variable name
         units :	unknown
         _FillValue :	1e+20
         level_indicator :	200
         gds_grid_type :	4
         parameter_table_version :	141
         parameter_number :	135
         model :	Analysis from GDAS (Global Data Assimilation System)
         level :	0
         forecast_time :	0
         forecast_time_units :	hours
         initial_time :	06/28/2015 (00:00)

      float VAR_137_GDS4_EATM ( g4_lat_0, g4_lon_1 )
         center :	US National Weather Service - NCEP (WMC)
         long_name :	unknown variable name
         units :	unknown
         _FillValue :	1e+20
         level_indicator :	200
         gds_grid_type :	4
         parameter_table_version :	141
         parameter_number :	137
         model :	Analysis from GDAS (Global Data Assimilation System)
         level :	0
         forecast_time :	0
         forecast_time_units :	hours
         initial_time :	06/28/2015 (00:00)

      float g4_lat_0 ( g4_lat_0 )
         long_name :	latitude
         GridType :	Gaussian Latitude/Longitude Grid
         units :	degrees_north
         N :	95
         Di :	0.9375013
         Lo2 :	359.063
         La2 :	-89.277
         Lo1 :	 0
         La1 :	89.277

      float g4_lon_1 ( g4_lon_1 )
         long_name :	longitude
         GridType :	Gaussian Latitude/Longitude Grid
         units :	degrees_east
         N :	95
         Di :	0.9375013
         Lo2 :	359.063
         La2 :	-89.277
         Lo1 :	 0
         La1 :	89.277

 
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 Copyright (C) 1995-2017 - All Rights Reserved
 University Corporation for Atmospheric Research
 NCAR Command Language Version 6.4.0
 The use of this software is governed by a License Agreement.
 See http://www.ncl.ucar.edu/ for more details.
warning: NclGRIB2: codetable file "/global/noscrub/Debasish.Hazra/NCL_64/lib/ncarg/grib2_codetables/ncep/4/4.2.255.255.table" not a valid GRIB2 code table.

warning:NclGRIB2: VAR_255_255_255_P0_L200 contains records that NCL cannot currently differentiate. One or more records will be ignored.

Variable: f
Type: file
filename:	AOD550.t00z.f00
path:	control_gfed/20150628/AOD550.t00z.f00.grib2
   file global attributes:
   dimensions:
      lat_0 = 190
      lon_0 = 384
   variables:
      float CWAT_P0_L200_GGA0 ( lat_0, lon_0 )
         center :	US National Weather Service - NCEP (WMC)
         production_status :	Operational products
         long_name :	Cloud water
         units :	kg m-2
         _FillValue :	1e+20
         grid_type :	Gaussian latitude/longitude
         parameter_discipline_and_category :	Meteorological products, Cloud
         parameter_template_discipline_category_number :	( 0, 0, 6, 6 )
         level_type :	Entire atmosphere (considered as a single layer)
         level :	 0
         forecast_time :	0
         forecast_time_units :	hours
         initial_time :	06/28/2015 (00:00)

      float VAR_255_255_255_P0_L200_GGA0 ( lat_0, lon_0 )
         center :	US National Weather Service - NCEP (WMC)
         production_status :	Operational products
         long_name :	unknown variable name
         units :	unknown
         _FillValue :	1e+20
         grid_type :	Gaussian latitude/longitude
         parameter_discipline_and_category :	Missing, Missing
         parameter_template_discipline_category_number :	( 0, 255, 255, 255 )
         level_type :	Entire atmosphere (considered as a single layer)
         level :	 0
         forecast_time :	0
         forecast_time_units :	hours
         initial_time :	06/28/2015 (00:00)

      float lat_0 ( lat_0 )
         long_name :	latitude
         grid_type :	Gaussian Latitude/Longitude
         units :	degrees_north
         N :	95
         Di :	0.9375013
         Lo2 :	359.063
         La2 :	-89.277
         Lo1 :	 0
         La1 :	89.277

      float lon_0 ( lon_0 )
         long_name :	longitude
         grid_type :	Gaussian Latitude/Longitude
         units :	degrees_east
         N :	95
         Di :	0.9375013
         Lo2 :	359.063
         La2 :	-89.277
         Lo1 :	 0
         La1 :	89.277

 


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