GS

FC

DAA

C

Scientific Focus

• Atmosphere
– Global 4-dimensional structure of the atmosphere (temperature, humidity,
...
GS

FC

DAA

C

HDF / HDF-EOS Data Sets
HDF

HDF-EOS

TOMS

UARS (ma ybe )

S EAWIFS

TRMM (1997)

CZCS

MODIS (1998, 2000...
GS

FC

DAA

C

Current HDF Tools

• Visualization / Analysis
– Freeware (Collage for HDF, EosView for HDF-EOS)
– Data set...
GS

FC

DAA

C

Additional HDF Tools

• Web or GUI based tool to allow user to specify file characteristics
for the automa...
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Current HDF Tools (1997)

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HDF AND HDF-EOS WORKSHOP I (1997)

Source: http://localhost/workshops/ws01/presentations/GSFCDAAC/GSFCDAAC.ppt

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Current HDF Tools (1997)

  1. 1. GS FC DAA C Scientific Focus • Atmosphere – Global 4-dimensional structure of the atmosphere (temperature, humidity, clouds) for atmospheric dynamics studies (TOVS, AIRS, Assimilation) – Upper atmospheric wind profiles, chemical composition profiles and energy input from solar radiation, solar wind, x-rays (UARS, TOMS, HIRDLS) – Regional (35N to 35S) rainfall rates for a better understanding of global hydrological processes (TRMM) • Ocean – Global and regional estimates (1 km and 4 km resolutions) of phytoplankton and marine primary productivity using visible and near infrared imagery (CZCS, SeaWiFS, MODIS) • Land – Long term, global land vegetation mapping using visible and near infrared imagery at 8 km spatial resolution (AVHRR)
  2. 2. GS FC DAA C HDF / HDF-EOS Data Sets HDF HDF-EOS TOMS UARS (ma ybe ) S EAWIFS TRMM (1997) CZCS MODIS (1998, 2000) TOVS DAS (1998) AVHRR AIRS /AMS U (2000) HIRDLS (2002) MLS (2002)
  3. 3. GS FC DAA C Current HDF Tools • Visualization / Analysis – Freeware (Collage for HDF, EosView for HDF-EOS) – Data set specific packages, e.g., VISTAS (TOVS), VisuAnalyze (TOMS) – Web based data set browsers – Commercial packages, e.g., IDL, SpyGlass • Utilities – Annotation, metadata extraction – Continental subsetting – HDF-to-binary conversion – Interactive geographic subsetting tool (FORTRAN and C)
  4. 4. GS FC DAA C Additional HDF Tools • Web or GUI based tool to allow user to specify file characteristics for the automatic creation of HDF file • Browse-o-rama type tools that shield user from HDF-specific terminology • Subsetting tools allowing user to more easily select geographic subregions and/or parameters • Translators to allow users to easily convert from HDF to their working format • Utilize information on fill values and scaling (gain and offset) when displaying HDF data • Include capability to change projections when displaying HDF data

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