GCIP/NESOB-97 Land Characterization: NOAA/NESDIS/ORA Land Surface Team GVI Products
The third generation Global Vegetation Index (GVI) weekly composite data are produced operationally by NOAA/NESDIS and includes conversion of counts to reflectances and brightness temperatures using the post-launch calibration and non-linearity correction coefficients. Cloud flags are generated and appended to each map cell. The GVI dataset represents a sample of Global Area Coverage (GAC) observations mapped into 0.144 degree resolution maps in equal-angle projection (Plate Carree). A 7-day composite is a mosaic of observations produced by retaining data for each map cell corresponding to the maximum difference between AVHRR channels 2 and 1. Normalized Difference Vegetation Index (NDVI) is calculated from AVHRR channel 2 and 1 reflectances using the following formula: NDVI = (CH2 - CH1) / (CH2 + CH1)
- download: avhrr.html
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|Begin datetime||1997-04-01 00:00:00|
|End datetime||1998-03-01 23:59:59|
Map data from IBCSO, IBCAO, and Global Topography.
Maximum (North) Latitude:
Minimum (South) Latitude:
Minimum (West) Longitude: -120.00, Maximum (East) Longitude: -50.00
Primary point of contact information
EOL Data Support <firstname.lastname@example.org>
Additional contact information
- originator: National Climatic Data Center (NCDC), NOAA
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