[gradsusr] OMI SO2 HDF5

[Sachis Makowski]

Great! thank you. I´ll let you know about my progress.

>
> Bests,
>
> Sandro
>
> 2011/7/14 James E. Johnson <James.Johnson at nasa.gov>
>
> First, make sure you have a version of GrADS that supports reading HDF-EOS5
>> grid files (2.0.a7 or higher).
>> Below is a sample GrADS control (.ctl) file that will let you read an OMI
>> SO2 level-3 gridded HDF-EOS5 data file:
>>
>> DSET  OMI-Aura_L3-OMSO2e_2004m1001_v003-2011m0526t144250.he5
>> DTYPE hdf5_grid
>> TITLE OMI Level-3 Daily Lat/Lon 0.25deg Gridded Column Sulfur Dioxide
>> Version 003 (OMSO2e.003)
>> UNDEF -1.26765060e+30 _FillValue
>> XDEF  1440 linear -180.0 0.25
>> YDEF   720 linear  -90.0 0.25
>> ZDEF     1 levels 1
>> TDEF     1 linear 01oct2004 1dy
>> VARS    14
>> /HDFEOS/GRIDS/OMI~Total~Column~Amount~SO2/Data~Fields/ColumnAmountSO2_PBL=>so2pbl
>>     0  y,x  Vertical Column Amount SO2
>> (Planetary Boundary Layer)
>> /HDFEOS/GRIDS/OMI~Total~Column~Amount~SO2/Data~Fields/SlantColumnAmountSO2=>slantso2
>>  0  y,x  Slant Column Amount SO2
>> /HDFEOS/GRIDS/OMI~Total~Column~Amount~SO2/Data~Fields/Latitude=>lat
>>             0  y,x  Geodetic Latitude
>> /HDFEOS/GRIDS/OMI~Total~Column~Amount~SO2/Data~Fields/Longitude=>lon
>>            0  y,x  Geodetic Longitude
>> /HDFEOS/GRIDS/OMI~Total~Column~Amount~SO2/Data~Fields/Time=>tai93
>>             0  y,x  Time (seconds since January 1, 1993)
>> /HDFEOS/GRIDS/OMI~Total~Column~Amount~SO2/Data~Fields/OrbitNumber=>orbit
>>            0  y,x  Orbit Number
>> /HDFEOS/GRIDS/OMI~Total~Column~Amount~SO2/Data~Fields/LineNumber=>line
>>            0  y,x  Line Number
>> /HDFEOS/GRIDS/OMI~Total~Column~Amount~SO2/Data~Fields/SceneNumber=>scene
>>            0  y,x  Scene Number
>> /HDFEOS/GRIDS/OMI~Total~Column~Amount~SO2/Data~Fields/ColumnAmountO3=>to3
>>             0  y,x  Total Column Amount O3
>> /HDFEOS/GRIDS/OMI~Total~Column~Amount~SO2/Data~Fields/RadiativeCloudFraction=>rcf
>>     0  y,x  Radiative Cloud Fraction
>> /HDFEOS/GRIDS/OMI~Total~Column~Amount~SO2/Data~Fields/TerrainHeight=>theight
>>          0  y,x  Terrain Height
>> /HDFEOS/GRIDS/OMI~Total~Column~Amount~SO2/Data~Fields/SolarZenithAngle=>sza
>>           0  y,x  Solar Zenith Angle
>> /HDFEOS/GRIDS/OMI~Total~Column~Amount~SO2/Data~Fields/RelativeAzimuthAngle=>raa
>>       0  y,x  Relative Azimuth Angle
>> /HDFEOS/GRIDS/OMI~Total~Column~Amount~SO2/Data~Fields/ViewingZenithAngle=>vza
>>         0  y,x  Viewing Zenith Angle
>> ENDVARS
>>
>>
>> Note the group paths to the data field variables must be specified in
>> full, and any spaces converted to tilda (~) characters.
>>
>> You can rename the OMSO2e data files by removing the production date/time
>> from the version (stuff after v003), then you would have
>> a file name like OMI-Aura_L3-OMSO2e_2004m1001_v003.he5. With this you
>> could modify the DSET (and add OPTIONS) to the .ctl file
>>
>> DSET  ^OMI-Aura_L3-OMSO2e_%ym%m%d_v003.he5
>> OPTIONS template
>>
>> and then you could read in multiple files for a range of dates (remember
>> to also adjust the TDEF range).
>>
>>
>> ------------------------------------------------------------------------------
>> | James E. Johnson                      | address:
>>   |
>> | Wyle Information Systems, Inc.        |  NASA Goddard Space Flight
>> Center  |
>> | e-mail: james.johnson at nasa.gov        |  Distributed Active Archive
>> Center |
>> | phone:  301-614-5121                  |  Code 610.2, Bldg 32, Room S130G
>>   |
>> | fax:    301-614-5268                  |  Greenbelt, MD  20771
>>    |
>>
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>>
>
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