MODIS Aqua Vegetation Indices 16-Day L3 Global 250m 2002-08
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keyword: MODIS
keyword: Aqua
keyword: NASA
keyword: Satellite
keyword: Global
keyword: Vegetation
keyword: NDVI
keyword: EVI
keyword: Vegetation Index
keyword: 250m
keyword: MYD13Q1
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description: The MODIS Aqua MYD13Q1 Version 6.1 product provides Vegetation Index (VI) values at 250 m spatial resolution on a per-pixel basis. The dataset includes two primary vegetation indices: the Normalized Difference Vegetation Index (NDVI), which maintains continuity with NDVI derived from NOAA-AVHRR observations, and the Enhanced Vegetation Index (EVI), which improves sensitivity in regions with high vegetation biomass. The product is generated as a 16-day composite, where the algorithm selects the best available pixel from all acquisitions within the compositing period based on criteria such as low cloud contamination, low view angle, and the highest NDVI/EVI value. In addition to the vegetation index layers and two quality layers, the dataset includes reflectance bands 1 (red), 2 (near-infrared), 3 (blue), and 7 (mid-infrared), as well as four observation layers.
temporal: PeriodOfTime
  start date: 2002-08-01T00:00:00.000Z
  end date: 2002-08-31T23:59:59.999Z
license: other