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NOAA-EMC / NCEPLIBS-grib_util

This is a collection of NCEP GRIB related utilities.
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degrib2 incorrect output for test file gdas.t12z.pgrb2.1p00.anl.grib2 #176

Closed edwardhartnett closed 1 year ago

edwardhartnett commented 1 year ago

[I am using new test file gdas.t12z.pgrb2.1p00.anl.grib2, which I got from the NOAA NOMADS site. So this is a NOAA GRIB2 file.

When I open the file with g2c_open() I find 19 messages. But degrib2 only finds two, and the DRS template numbers look wrong. The first DRS template value is negative, but the template says it should always be positive...


 GRIB MESSAGE  1  starts at 1

  SECTION 0:  0 2 71095
  SECTION 1:  7 0 2 1 0 2022 11 6 12 0 0 0 0
  Contains  0  Local Sections  and  1  data fields.

  FIELD  1
  SECTION 0:  0 2
  SECTION 1:  7 0 2 1 0 2022 11 6 12 0 0 0 0
  SECTION 3:  0 65160 0 0 0
  GRID TEMPLATE 3. 0 :  6 0 0 0 0 0 0 360 181 0 -1 90000000 0 48 -90000000 359000000 1000000 1000000 0
  NO Optional List Defining Number of Data Points.
  PRODUCT TEMPLATE 4. 0: ( PARAMETER = ABSV     0 2 10 )  2 10 0 0 81 0 0 1 0 100 0 80000 255 0 0
  FIELD: ABSV     800 mb valid  0 hour after 2022110612:00:00
  NO Optional Vertical Coordinate List.
  Num. of Data Points =  65160     NO BIT-MAP 
  DRS TEMPLATE 5. 3 :  -1000579487 0 6 12 0 1 0 1649987994 -1 2178 0 4 1 1 104 8 2 2
  Data Values:
  Num. of Data Points =  65160   Num. of Data Undefined = 0
( PARM= ABSV ) :  MIN=              -0.00088147 AVE=              -0.00000063 MAX=               0.00105553

 GRIB MESSAGE  2  starts at 71096

  SECTION 0:  0 2 71846
  SECTION 1:  7 0 2 1 0 2022 11 6 12 0 0 0 0
  Contains  0  Local Sections  and  1  data fields.

  FIELD  1
  SECTION 0:  0 2
  SECTION 1:  7 0 2 1 0 2022 11 6 12 0 0 0 0
  SECTION 3:  0 65160 0 0 0
  GRID TEMPLATE 3. 0 :  6 0 0 0 0 0 0 360 181 0 -1 90000000 0 48 -90000000 359000000 1000000 1000000 0
  NO Optional List Defining Number of Data Points.
  PRODUCT TEMPLATE 4. 0: ( PARAMETER = ABSV     0 2 10 )  2 10 0 0 81 0 0 1 0 100 0 85000 255 0 0
  FIELD: ABSV     850 mb valid  0 hour after 2022110612:00:00
  NO Optional Vertical Coordinate List.
  Num. of Data Points =  65160     NO BIT-MAP 
  DRS TEMPLATE 5. 3 :  -997588251 0 6 12 0 1 0 1649987994 -1 2159 0 4 1 1 104 7 2 2
  Data Values:
  Num. of Data Points =  65160   Num. of Data Undefined = 0
( PARM= ABSV ) :  MIN=              -0.00110409 AVE=              -0.00000060 MAX=               0.00104891

  Total Number of Fields Found =  2