[gradsusr] Opening up NASA GSSTF.3 HDF-EOS5 data in GrADS

James E. Johnson James.Johnson at nasa.gov
Fri Oct 18 14:08:44 EDT 2013 

You have to write a GrADS control (.ctl) file for the HDF-EOS5 file, the 
sdfopen command won't work as GrADS / CF convention doesn't understand the 
HDF-EOS conventions for geolocation. Make sure your version of GrADS supports 
the HDF5 file format.


----------------------------- <start .ctl file> ------------------------------
DSET GSSTF.3.%y4.%m2.%d2.he5
DTYPE hdf5_grid
TITLE Goddard Satellite-Based Surface Turbulent Fluxes (GSSTF), 0.25x0.25 
degree Daily Grid, Set1 of Combined Satellites, Version 3
UNDEF -999.0 _FillValue
OPTIONS template
XDEF 1440 linear -180 0.25
YDEF 720 linear -90 0.25
ZDEF 1 levels 1
TDEF 7847 linear 09jul1987 1dy
VARS 8
/HDFEOS/GRIDS/SET1/Data~Fields/E=>E  0  y,x  latent heat flux (W/m^^2)
/HDFEOS/GRIDS/SET1/Data~Fields/STu=>STu  0  y,x  zonal wind stress (N/m^^2)
/HDFEOS/GRIDS/SET1/Data~Fields/STv=>STv  0  y,x  meridional wind stress 
(N/m^^2)
/HDFEOS/GRIDS/SET1/Data~Fields/H=>H  0  y,x  sensible heat flux (W/m^^2)
/HDFEOS/GRIDS/SET1/Data~Fields/Qair=>Qair  0  y,x  surface air (~10-m) 
specific humidity (g/kg)
/HDFEOS/GRIDS/SET1/Data~Fields/U=>U  0  y,x  10-m wind speed (m/s)
/HDFEOS/GRIDS/SET1/Data~Fields/DQ=>DQ  0  y,x  sea-air humidity difference 
(g/kg)
/HDFEOS/GRIDS/SET1/Data~Fields/Tot_Precip_Water=>Tot_Precip_Water  0  y,x  
total precipitable water (g/cm^^2)
ENDVARS
------------------------------ <end .ctl file> -------------------------------

Then run grads, and open the .ctl file using the open command:

$ grads

Grid Analysis and Display System (GrADS) Version 2.0.2
Copyright (c) 1988-2011 by Brian Doty and the         
Institute for Global Environment and Society (IGES)   
GrADS comes with ABSOLUTELY NO WARRANTY               
See file COPYRIGHT for more information               

Config: v2.0.2 little-endian readline printim grib2 netcdf hdf4-sds hdf5 
opendap-grids,stn geotiff shapefile                                                    
Issue 'q config' command for more detailed configuration information            
Landscape mode? ('n' for portrait):                                             
GX Package Initialization: Size = 11 8.5
ga-> open gsstf3-he5
Scanning description file:  gsstf3-he5
Data file GSSTF.3.%y4.%m2.%d2.he5 is open as file 1
LON set to 0 360
LAT set to -90 89.75
LEV set to 1 1
Time values set: 1987:7:9:0 1987:7:9:0
E set to 1 1
ga-> q file
File 1 : Goddard Satellite-Based Surface Turbulent Fluxes (GSSTF), 0.25x0.25 
degree Daily Grid, Set1 of Combined Satellites, Version 3
  Descriptor: gsstf3-he5.ctl
  Binary: GSSTF.3.%y4.%m2.%d2.he5
  Type = Gridded
  Xsize = 1440  Ysize = 720  Zsize = 1  Tsize = 7850  Esize = 1
  Number of Variables = 8
     e  0  y,x  latent heat flux (W/m^^2)
     stu  0  y,x  zonal wind stress (N/m^^2)
     stv  0  y,x  meridional wind stress (N/m^^2)
     h  0  y,x  sensible heat flux (W/m^^2)
     qair  0  y,x  surface air (~10-m) specific humidity (g/kg)
     u  0  y,x  10-m wind speed (m/s)
     dq  0  y,x  sea-air humidity difference (g/kg)
     tot_precip_wate  0  y,x  total precipitable water (g/cm^^2)
ga-> set time 28dec1998
Time values set: 1998:12:28:0 1998:12:28:0
ga-> set lat -90 90
LAT set to -90 90
ga-> set lon -180 180
LON set to -180 180
ga-> set gxout grfill
ga-> d e
Contouring: -0 to 650 interval 50
ga->


On Friday 18 October 2013 01:07:27 pm Vizy, Edward K wrote:
> Hi,
> 
> I am trying to view the Goddard Satellite-Based Surface Turbulent Fluxes,
>  Daily Grid from MEaSUREs site at:
>  http://disc.gsfc.nasa.gov/daac-bin/DataHoldingsMEASURES.pl in GrADS.
> 
> When I go to open the file in GrADS using the following I get the following
>  error message: ga-> sdfopen GSSTF.3.1998.12.28.he5
> Scanning self-describing file:  GSSTF.3.1998.12.28.he5
> gadsdf: SDF file has no discernable X coordinate.
>   To open this file with GrADS, use a descriptor file with an XDEF entry.
>   Documentation is at http://iges.org/grads/gadoc/SDFdescriptorfile.html
> 
> However, when I use opendap to open the file it works fine and all of the
>  fields are appropriate magnitudes.  That is:
> 
> ga-> sdfopen
>  http://measures.gsfc.nasa.gov/opendap/GSSTF/GSSTF.3/1998/GSSTF.3.1998.12.2
> 8.he5 Scanning self-describing file: 
>  http://measures.gsfc.nasa.gov/opendap/GSSTF/GSSTF.3/1998/GSSTF.3.1998.12.2
> 8.he5 SDF file has no discernable time coordinate -- using default values.
>  SDF file
>  http://measures.gsfc.nasa.gov/opendap/GSSTF/GSSTF.3/1998/GSSTF.3.1998.12.2
> 8.he5 is open as file 1 LON set to -179.875 179.875
> LAT set to -89.875 89.875
> LEV set to 0 0
> Time values set: 1:1:1:0 1:1:1:0
> E set to 1 1
> 
> So using the q ctlinfo command I was able to extract and construct a
>  control file for the downloaded HDF-EOS5 data file:
> 
> dset ^./GSSTF.3.1998.12.28.he5
> title
> undef -999
> dtype netcdf
> xdef 1440 levels -179.875 -179.625 -179.375 -179.125 -178.875 -178.625
>  -178.375 -178.125 -177.875 -177.625 -177.375 -177.125 -176.875 -176.625
>  -176.375 -176.125 -175.875 -175.625 -175.375 -175.125 -174.875 -174.625
>  -174.375 -174.125 -173.875 -173.625 -173.375 -173.125 -172.875 -172.625
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>  -114.375 -114.125 -113.875 -113.625 -113.375 -113.125 -112.875 -112.625
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>  -100.375 -100.125 -99.875 -99.625 -99.375 -99.125 -98.875 -98.625 -98.375
>  -98.125 -97.875 -97.625 -97.375 -97.125 -96.875 -96.625 -96.375 -96.125
>  -95.875 -95.625 -95.375 -95.125 -94.875 -94.625 -94.375 -94.125 -93.875
>  -93.625 -93.375 -93.125 -92.875 -92.625 -92.375 -92.125 -91.875 -91.625
>  -91.375 -91.125 -90.875 -90.625 -90.375 -90.125 -89.875 -89.625 -89.375
>  -89.125 -88.875 -88.625 -88.375 -88.125 -87.875 -87.625 -87.375 -87.125
>  -86.875 -86.625 -86.375 -86.125 -85.875 -85.625 -85.375 -85.125 -84.875
>  -84.625 -84.375 -84.125 -83.875 -83.625 -83.375 -83.125 -82.875 -82.625
>  -82.375 -82.125 -81.875 -81.625 -81.375 -81.125 -80.875 -80.625 -80.375
>  -80.125 -79.875 -79.625 -79.375 -79.125 -78.875 -78.625 -78.375 -78.125
>  -77.875 -77.625 -77.375 -77.125 -76.875 -76.625 -76.375 -76.125 -75.875
>  -75.625 -75.375 -75.125 -74.875 -74.625 -74.375 -74.125 -73.875 -73.625
>  -73.375 -73.125 -72.875 -72.625 -72.375 -72.125 -71.875 -71.625 -71.375
>  -71.125 -70.875 -70.625 -70.375 -70.125 -69.875 -69.625 -69.375 -69.125
>  -68.875 -68.625 -68.375 -68.125 -67.875 -67.625 -67.375 -67.125 -66.875
>  -66.625 -66.375 -66.125 -65.875 -65.625 -65.375 -65.125 -64.875 -64.625
>  -64.375 -64.125 -63.875 -63.625 -63.375 -63.125 -62.875 -62.625 -62.375
>  -62.125 -61.875 -61.625 -61.375 -61.125 -60.875 -60.625 -60.375 -60.125
>  -59.875 -59.625 -59.375 -59.125 -58.875 -58.625 -58.375 -58.125 -57.875
>  -57.625 -57.375 -57.125 -56.875 -56.625 -56.375 -56.125 -55.875 -55.625
>  -55.375 -55.125 -54.875 -54.625 -54.375 -54.125 -53.875 -53.625 -53.375
>  -53.125 -52.875 -52.625 -52.375 -52.125 -51.875 -51.625 -51.375 -51.125
>  -50.875 -50.625 -50.375 -50.125 -49.875 -49.625 -49.375 -49.125 -48.875
>  -48.625 -48.375 -48.125 -47.875 -47.625 -47.375 -47.125 -46.875 -46.625
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>  -44.125 -43.875 -43.625 -43.375 -43.125 -42.875 -42.625 -42.375 -42.125
>  -41.875 -41.625 -41.375 -41.125 -40.875 -40.625 -40.375 -40.125 -39.875
>  -39.625 -39.375 -39.125 -38.875 -38.625 -38.375 -38.125 -37.875 -37.625
>  -37.375 -37.125 -36.875 -36.625 -36.375 -36.125 -35.875 -35.625 -35.375
>  -35.125 -34.875 -34.625 -34.375 -34.125 -33.875 -33.625 -33.375 -33.125
>  -32.875 -32.625 -32.375 -32.125 -31.875 -31.625 -31.375 -31.125 -30.875
>  -30.625 -30.375 -30.125 -29.875 -29.625 -29.375 -29.125 -28.875 -28.625
>  -28.375 -28.125 -27.875 -27.625 -27.375 -27.125 -26.875 -26.625 -26.375
>  -26.125 -25.875 -25.625 -25.375 -25.125 -24.875 -24.625 -24.375 -24.125
>  -23.875 -23.625 -23.375 -23.125 -22.875 -22.625 -22.375 -22.125 -21.875
>  -21.625 -21.375 -21.125 -20.875 -20.625 -20.375 -20.125 -19.875 -19.625
>  -19.375 -19.125 -18.875 -18.625 -18.375 -18.125 -17.875 -17.625 -17.375
>  -17.125 -16.875 -16.625 -16.375 -16.125 -15.875 -15.625 -15.375 -15.125
>  -14.875 -14.625 -14.375 -14.125 -13.875 -13.625 -13.375 -13.125 -12.875
>  -12.625 -12.375 -12.125 -11.875 -11.625 -11.375 -11.125 -10.875 -10.625
>  -10.375 -10.125 -9.87501 -9.62499 -9.37501 -9.12499 -8.87501 -8.62499
>  -8.37501 -8.12499 -7.87501 -7.62499 -7.37501 -7.12499 -6.87501 -6.62499
>  -6.37501 -6.12499 -5.87501 -5.62499 -5.37501 -5.12499 -4.87501 -4.62499
>  -4.37501 -4.12499 -3.87501 -3.62499 -3.37501 -3.12499 -2.87501 -2.62499
>  -2.37501 -2.12499 -1.87501 -1.62499 -1.37501 -1.12499 -0.875008 -0.624992
>  -0.375008 -0.124992 0.124992 0.375008 0.624992 0.875008 1.12499 1.37501
>  1.62499 1.87501 2.12499 2.37501 2.62499 2.87501 3.12499 3.37501 3.62499
>  3.87501 4.12499 4.37501 4.62499 4.87501 5.12499 5.37501 5.62499 5.87501
>  6.12499 6.37501 6.62499 6.87501 7.12499 7.37501 7.62499 7.87501 8.12499
>  8.37501 8.62499 8.87501 9.12499 9.37501 9.62499 9.87501 10.125 10.375
>  10.625 10.875 11.125 11.375 11.625 11.875 12.125 12.375 12.625 12.875
>  13.125 13.375 13.625 13.875 14.125 14.375 14.625 14.875 15.125 15.375
>  15.625 15.875 16.125 16.375 16.625 16.875 17.125 17.375 17.625 17.875
>  18.125 18.375 18.625 18.875 19.125 19.375 19.625 19.875 20.125 20.375
>  20.625 20.875 21.125 21.375 21.625 21.875 22.125 22.375 22.625 22.875
>  23.125 23.375 23.625 23.875 24.125 24.375 24.625 24.875 25.125 25.375
>  25.625 25.875 26.125 26.375 26.625 26.875 27.125 27.375 27.625 27.875
>  28.125 28.375 28.625 28.875 29.125 29.375 29.625 29.875 30.125 30.375
>  30.625 30.875 31.125 31.375 31.625 31.875 32.125 32.375 32.625 32.875
>  33.125 33.375 33.625 33.875 34.125 34.375 34.625 34.875 35.125 35.375
>  35.625 35.875 36.125 36.375 36.625 36.875 37.125 37.375 37.625 37.875
>  38.125 38.375 38.625 38.875 39.125 39.375 39.625 39.875 40.125 40.375
>  40.625 40.875 41.125 41.375 41.625 41.875 42.125 42.375 42.625 42.875
>  43.125 43.375 43.625 43.875 44.125 44.375 44.625 44.875 45.125 45.375
>  45.625 45.875 46.125 46.375 46.625 46.875 47.125 47.375 47.625 47.875
>  48.125 48.375 48.625 48.875 49.125 49.375 49.625 49.875 50.125 50.375
>  50.625 50.875 51.125 51.375 51.625 51.875 52.125 52.375 52.625 52.875
>  53.125 53.375 53.625 53.875 54.125 54.375 54.625 54.875 55.125 55.375
>  55.625 55.875 56.125 56.375 56.625 56.875 57.125 57.375 57.625 57.875
>  58.125 58.375 58.625 58.875 59.125 59.375 59.625 59.875 60.125 60.375
>  60.625 60.875 61.125 61.375 61.625 61.875 62.125 62.375 62.625 62.875
>  63.125 63.375 63.625 63.875 64.125 64.375 64.625 64.875 65.125 65.375
>  65.625 65.875 66.125 66.375 66.625 66.875 67.125 67.375 67.625 67.875
>  68.125 68.375 68.625 68.875 69.125 69.375 69.625 69.875 70.125 70.375
>  70.625 70.875 71.125 71.375 71.625 71.875 72.125 72.375 72.625 72.875
>  73.125 73.375 73.625 73.875 74.125 74.375 74.625 74.875 75.125 75.375
>  75.625 75.875 76.125 76.375 76.625 76.875 77.125 77.375 77.625 77.875
>  78.125 78.375 78.625 78.875 79.125 79.375 79.625 79.875 80.125 80.375
>  80.625 80.875 81.125 81.375 81.625 81.875 82.125 82.375 82.625 82.875
>  83.125 83.375 83.625 83.875 84.125 84.375 84.625 84.875 85.125 85.375
>  85.625 85.875 86.125 86.375 86.625 86.875 87.125 87.375 87.625 87.875
>  88.125 88.375 88.625 88.875 89.125 89.375 89.625 89.875 90.125 90.375
>  90.625 90.875 91.125 91.375 91.625 91.875 92.125 92.375 92.625 92.875
>  93.125 93.375 93.625 93.875 94.125 94.375 94.625 94.875 95.125 95.375
>  95.625 95.875 96.125 96.375 96.625 96.875 97.125 97.375 97.625 97.875
>  98.125 98.375 98.625 98.875 99.125 99.375 99.625 99.875 100.125 100.375
>  100.625 100.875 101.125 101.375 101.625 101.875 102.125 102.375 102.625
>  102.875 103.125 103.375 103.625 103.875 104.125 104.375 104.625 104.875
>  105.125 105.375 105.625 105.875 106.125 106.375 106.625 106.875 107.125
>  107.375 107.625 107.875 108.125 108.375 108.625 108.875 109.125 109.375
>  109.625 109.875 110.125 110.375 110.625 110.875 111.125 111.375 111.625
>  111.875 112.125 112.375 112.625 112.875 113.125 113.375 113.625 113.875
>  114.125 114.375 114.625 114.875 115.125 115.375 115.625 115.875 116.125
>  116.375 116.625 116.875 117.125 117.375 117.625 117.875 118.125 118.375
>  118.625 118.875 119.125 119.375 119.625 119.875 120.125 120.375 120.625
>  120.875 121.125 121.375 121.625 121.875 122.125 122.375 122.625 122.875
>  123.125 123.375 123.625 123.875 124.125 124.375 124.625 124.875 125.125
>  125.375 125.625 125.875 126.125 126.375 126.625 126.875 127.125 127.375
>  127.625 127.875 128.125 128.375 128.625 128.875 129.125 129.375 129.625
>  129.875 130.125 130.375 130.625 130.875 131.125 131.375 131.625 131.875
>  132.125 132.375 132.625 132.875 133.125 133.375 133.625 133.875 134.125
>  134.375 134.625 134.875 135.125 135.375 135.625 135.875 136.125 136.375
>  136.625 136.875 137.125 137.375 137.625 137.875 138.125 138.375 138.625
>  138.875 139.125 139.375 139.625 139.875 140.125 140.375 140.625 140.875
>  141.125 141.375 141.625 141.875 142.125 142.375 142.625 142.875 143.125
>  143.375 143.625 143.875 144.125 144.375 144.625 144.875 145.125 145.375
>  145.625 145.875 146.125 146.375 146.625 146.875 147.125 147.375 147.625
>  147.875 148.125 148.375 148.625 148.875 149.125 149.375 149.625 149.875
>  150.125 150.375 150.625 150.875 151.125 151.375 151.625 151.875 152.125
>  152.375 152.625 152.875 153.125 153.375 153.625 153.875 154.125 154.375
>  154.625 154.875 155.125 155.375 155.625 155.875 156.125 156.375 156.625
>  156.875 157.125 157.375 157.625 157.875 158.125 158.375 158.625 158.875
>  159.125 159.375 159.625 159.875 160.125 160.375 160.625 160.875 161.125
>  161.375 161.625 161.875 162.125 162.375 162.625 162.875 163.125 163.375
>  163.625 163.875 164.125 164.375 164.625 164.875 165.125 165.375 165.625
>  165.875 166.125 166.375 166.625 166.875 167.125 167.375 167.625 167.875
>  168.125 168.375 168.625 168.875 169.125 169.375 169.625 169.875 170.125
>  170.375 170.625 170.875 171.125 171.375 171.625 171.875 172.125 172.375
>  172.625 172.875 173.125 173.375 173.625 173.875 174.125 174.375 174.625
>  174.875 175.125 175.375 175.625 175.875 176.125 176.375 176.625 176.875
>  177.125 177.375 177.625 177.875 178.125 178.375 178.625 178.875 179.125
>  179.375 179.625 179.875
> ydef 720 levels -89.875 -89.625 -89.375 -89.125 -88.875 -88.625 -88.375
>  -88.125 -87.875 -87.625 -87.375 -87.125 -86.875 -86.625 -86.375 -86.125
>  -85.875 -85.625 -85.375 -85.125 -84.875 -84.625 -84.375 -84.125 -83.875
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>  -81.375 -81.125 -80.875 -80.625 -80.375 -80.125 -79.875 -79.625 -79.375
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>  -70.125 -69.875 -69.625 -69.375 -69.125 -68.875 -68.625 -68.375 -68.125
>  -67.875 -67.625 -67.375 -67.125 -66.875 -66.625 -66.375 -66.125 -65.875
>  -65.625 -65.375 -65.125 -64.875 -64.625 -64.375 -64.125 -63.875 -63.625
>  -63.375 -63.125 -62.875 -62.625 -62.375 -62.125 -61.875 -61.625 -61.375
>  -61.125 -60.875 -60.625 -60.375 -60.125 -59.875 -59.625 -59.375 -59.125
>  -58.875 -58.625 -58.375 -58.125 -57.875 -57.625 -57.375 -57.125 -56.875
>  -56.625 -56.375 -56.125 -55.875 -55.625 -55.375 -55.125 -54.875 -54.625
>  -54.375 -54.125 -53.875 -53.625 -53.375 -53.125 -52.875 -52.625 -52.375
>  -52.125 -51.875 -51.625 -51.375 -51.125 -50.875 -50.625 -50.375 -50.125
>  -49.875 -49.625 -49.375 -49.125 -48.875 -48.625 -48.375 -48.125 -47.875
>  -47.625 -47.375 -47.125 -46.875 -46.625 -46.375 -46.125 -45.875 -45.625
>  -45.375 -45.125 -44.875 -44.625 -44.375 -44.125 -43.875 -43.625 -43.375
>  -43.125 -42.875 -42.625 -42.375 -42.125 -41.875 -41.625 -41.375 -41.125
>  -40.875 -40.625 -40.375 -40.125 -39.875 -39.625 -39.375 -39.125 -38.875
>  -38.625 -38.375 -38.125 -37.875 -37.625 -37.375 -37.125 -36.875 -36.625
>  -36.375 -36.125 -35.875 -35.625 -35.375 -35.125 -34.875 -34.625 -34.375
>  -34.125 -33.875 -33.625 -33.375 -33.125 -32.875 -32.625 -32.375 -32.125
>  -31.875 -31.625 -31.375 -31.125 -30.875 -30.625 -30.375 -30.125 -29.875
>  -29.625 -29.375 -29.125 -28.875 -28.625 -28.375 -28.125 -27.875 -27.625
>  -27.375 -27.125 -26.875 -26.625 -26.375 -26.125 -25.875 -25.625 -25.375
>  -25.125 -24.875 -24.625 -24.375 -24.125 -23.875 -23.625 -23.375 -23.125
>  -22.875 -22.625 -22.375 -22.125 -21.875 -21.625 -21.375 -21.125 -20.875
>  -20.625 -20.375 -20.125 -19.875 -19.625 -19.375 -19.125 -18.875 -18.625
>  -18.375 -18.125 -17.875 -17.625 -17.375 -17.125 -16.875 -16.625 -16.375
>  -16.125 -15.875 -15.625 -15.375 -15.125 -14.875 -14.625 -14.375 -14.125
>  -13.875 -13.625 -13.375 -13.125 -12.875 -12.625 -12.375 -12.125 -11.875
>  -11.625 -11.375 -11.125 -10.875 -10.625 -10.375 -10.125 -9.875 -9.625
>  -9.375 -9.125 -8.875 -8.625 -8.375 -8.125 -7.875 -7.625 -7.375 -7.125
>  -6.875 -6.625 -6.375 -6.125 -5.875 -5.625 -5.375 -5.125 -4.875 -4.625
>  -4.375 -4.125 -3.875 -3.625 -3.375 -3.125 -2.875 -2.625 -2.375 -2.125
>  -1.875 -1.625 -1.375 -1.125 -0.875 -0.625 -0.375 -0.125 0.125 0.375 0.625
>  0.875 1.125 1.375 1.625 1.875
> 2.125 2.375 2.625 2.875 3.125 3.375 3.625 3.875 4.125 4.375
> 4.625 4.875 5.125 5.375 5.625 5.875 6.125 6.375 6.625 6.875
> 7.125 7.375 7.625 7.875 8.125 8.375 8.625 8.875 9.125 9.375
> 9.625 9.875 10.125 10.375 10.625 10.875 11.125 11.375 11.625 11.875
> 12.125 12.375 12.625 12.875 13.125 13.375 13.625 13.875 14.125 14.375
> 14.625 14.875 15.125 15.375 15.625 15.875 16.125 16.375 16.625 16.875
> 17.125 17.375 17.625 17.875 18.125 18.375 18.625 18.875 19.125 19.375
> 19.625 19.875 20.125 20.375 20.625 20.875 21.125 21.375 21.625 21.875
> 22.125 22.375 22.625 22.875 23.125 23.375 23.625 23.875 24.125 24.375
> 24.625 24.875 25.125 25.375 25.625 25.875 26.125 26.375 26.625 26.875
> 27.125 27.375 27.625 27.875 28.125 28.375 28.625 28.875 29.125 29.375
> 29.625 29.875 30.125 30.375 30.625 30.875 31.125 31.375 31.625 31.875
> 32.125 32.375 32.625 32.875 33.125 33.375 33.625 33.875 34.125 34.375
> 34.625 34.875 35.125 35.375 35.625 35.875 36.125 36.375 36.625 36.875
> 37.125 37.375 37.625 37.875 38.125 38.375 38.625 38.875 39.125 39.375
> 39.625 39.875 40.125 40.375 40.625 40.875 41.125 41.375 41.625 41.875
> 42.125 42.375 42.625 42.875 43.125 43.375 43.625 43.875 44.125 44.375
> 44.625 44.875 45.125 45.375 45.625 45.875 46.125 46.375 46.625 46.875
> 47.125 47.375 47.625 47.875 48.125 48.375 48.625 48.875 49.125 49.375
> 49.625 49.875 50.125 50.375 50.625 50.875 51.125 51.375 51.625 51.875
> 52.125 52.375 52.625 52.875 53.125 53.375 53.625 53.875 54.125 54.375
> 54.625 54.875 55.125 55.375 55.625 55.875 56.125 56.375 56.625 56.875
> 57.125 57.375 57.625 57.875 58.125 58.375 58.625 58.875 59.125 59.375
> 59.625 59.875 60.125 60.375 60.625 60.875 61.125 61.375 61.625 61.875
> 62.125 62.375 62.625 62.875 63.125 63.375 63.625 63.875 64.125 64.375
> 64.625 64.875 65.125 65.375 65.625 65.875 66.125 66.375 66.625 66.875
> 67.125 67.375 67.625 67.875 68.125 68.375 68.625 68.875 69.125 69.375
> 69.625 69.875 70.125 70.375 70.625 70.875 71.125 71.375 71.625 71.875
> 72.125 72.375 72.625 72.875 73.125 73.375 73.625 73.875 74.125 74.375
> 74.625 74.875 75.125 75.375 75.625 75.875 76.125 76.375 76.625 76.875
> 77.125 77.375 77.625 77.875 78.125 78.375 78.625 78.875 79.125 79.375
> 79.625 79.875 80.125 80.375 80.625 80.875 81.125 81.375 81.625 81.875
> 82.125 82.375 82.625 82.875 83.125 83.375 83.625 83.875 84.125 84.375
> 84.625 84.875 85.125 85.375 85.625 85.875 86.125 86.375 86.625 86.875
> 87.125 87.375 87.625 87.875 88.125 88.375 88.625 88.875 89.125 89.375
> 89.625 89.875
> zdef 1 linear 0 1
> tdef 1 linear 00Z01JAN0001 1mn
> vars 8
> DQ=>dq  0  y,x  sea-air humidity difference
> E=>e  0  y,x  latent heat flux
> H=>h  0  y,x  sensible heat flux
> Qair=>qair  0  y,x  surface air (~10-m) specific humidity
> STu=>stu  0  y,x  zonal wind stress
> STv=>stv  0  y,x  meridional wind stress
> Tot_Precip_Water=>tot_precip_wate  0  y,x  total precipitable water
> U=>u  0  y,x  10-m wind speed
> endvars
> 
> This control file allows me to open the data file up, but when I go to
>  display any variable I get the following error message: ga-> d u
> Error: Variable U not in netcdf file
> Data Request Error:  Error for variable 'u'
>   Error ocurred at column 1
> DISPLAY error:  Invalid expression
>   Expression = u
> 
> I then tried to change dtype netcdf to read  dtype hdf5_grid.  When I do
>  this then try to display a variable I get the following: ga-> d u
> HDF5-DIAG: Error detected in HDF5 (1.8.7) thread 0:
>   #000: H5D.c line 334 in H5Dopen2(): not found
>     major: Dataset
>     minor: Object not found
>   #001: H5Gloc.c line 430 in H5G_loc_find(): can't find object
>     major: Symbol table
>     minor: Object not found
>   #002: H5Gtraverse.c line 905 in H5G_traverse(): internal path traversal
>  failed major: Symbol table
>     minor: Object not found
>   #003: H5Gtraverse.c line 688 in H5G_traverse_real(): traversal operator
>  failed major: Symbol table
>     minor: Callback failed
>   #004: H5Gloc.c line 385 in H5G_loc_find_cb(): object 'U' doesn't exist
>     major: Symbol table
>     minor: Object not found
> Error: H5Dopen2 failed for variable U
> Error: Variable U not in HDF5 file
> Data Request Error:  Error for variable 'u'
>   Error ocurred at column 1
> DISPLAY error:  Invalid expression
>   Expression = u
> 
> Does anyone have any suggestions about what may be wrong and/or how the
>  control file should read so as to be able to open up this data? My GrADS
>  build information is as follows:
> 
> Config: v2.0.2 little-endian readline printim grib2 netcdf hdf4-sds hdf5
>  opendap-grids,stn geotiff shapefile Grid Analysis and Display System
>  (GrADS) Version 2.0.2
> Copyright (c) 1988-2011 by Brian Doty and the
> Institute for Global Environment and Society (IGES)
> This program is distributed WITHOUT ANY WARRANTY
> See file COPYRIGHT for more information.
> 
> Built Thu Nov  8 13:55:26 EST 2012 for x86_64-unknown-linux-gnu
> 
> This version of GrADS has been configured with the following options:
>   o Built on a LITTLE ENDIAN machine
>   o Athena Widget GUI DISABLED
>   o Command line editing ENABLED
>       http://tiswww.case.edu/php/chet/readline/rltop.html
>   o printim command for image output ENABLED
>       http://www.zlib.net
>       http://www.libpng.org/pub/png/libpng.html
>       http://www.libgd.org/Main_Page
>   o GRIB2 interface ENABLED
>       http://www.ijg.org
>       http://www.ece.uvic.ca/~mdadams/jasper
>       http://www.nco.ncep.noaa.gov/pmb/codes/GRIB2
>       g2clib-1.4.0
>   o NetCDF interface ENABLED
>       http://www.unidata.ucar.edu/software/netcdf
>       netcdf 4.1.2 of Oct  5 2011 11:54:30 $
>   o OPeNDAP gridded data interface ENABLED
>   o OPeNDAP station data interface ENABLED
>       http://iges.org/grads/gadoc/supplibs.html
>       libgadap 2.0
>   o HDF4 and HDF5 interfaces ENABLED
>       http://hdfgroup.org
>       HDF 4.2r3
>       HDF5 1.8.7
>   o GeoTIFF and KML/TIFF output ENABLED
>       http://www.libtiff.org
>       http://geotiff.osgeo.org
>   o KML contour output ENABLED
>   o Shapefile interface ENABLED
>       http://shapelib.maptools.org
> 
> 
> Many thanks
> Ned
> 
> 
> Dr. Edward "Ned" Vizy
> Research Engineer/Scientist Associate V
> Jackson School of Geosciences
> Department of Geological Sciences
> The University of Texas at Austin
> 2275 Speedway C9000
> Austin, Texas 78712
> e-mail: ned at jsg.utexas.edu<mailto:ned at jsg.utexas.edu>
> phone: 512-585-1937
> 

------------------------------------------------------------------------------
| James E. Johnson                   | address:                              |
| ADNET Systems, Inc.                |  NASA Goddard Space Flight Center     |
| e-mail: james.johnson at nasa.gov     |  Data and Information Services Center |
| phone:  301-614-5121               |  Code 610.2, Bldg 32, Room S130G      |
| fax:    301-614-5268               |  Greenbelt, MD  20771                 |
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