[Parameters: Topic='BIOSPHERE', Term='VEGETATION', Variable_Level_1='BIOMASS']
MODIS/Terra Vegetation Indices 16-Day L3 Global 250m SIN Grid V006Entry ID: MOD13Q1
Abstract: The MOD13Q1 Version 6 product provides a Vegetation Index (VI) value at a per pixel basis. There are 2 primary vegetation layers. The first is the Normalized Difference Vegetation Index (NDVI) which is referred to as the continuity index to the existing National Oceanic and Atmospheric Administration-Advanced Very High Resolution Radiometer (NOAA-AVHRR) derived NDVI. The second vegetation layer ... is the Enhanced Vegetation Index (EVI), which has improved sensitivity over high biomass regions.
The grid consists of 4,800 rows and 4,800 columns of 250 meter pixels. The algorithm chooses the best available pixel value from all the acquisitions from the 16 day period. The criteria used is low clouds, low view angle and the highest NDVI/EVI value.
Along with the Vegetation layers and the two QA layers the HDF file will have MODIS Reflectance bands 1 (Red), 2 (NIR), 3 (Blue), and 7 (MIR), as well as four observation layers. Validation at stage 3 has been achieved for all MODIS MOD/MYD13 vegetation products.
Purpose: Science Research
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Data Set Citation
Start Date: 1999-12-18
ISO Topic Category
Data Set Progress
Extended Metadata Properties
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