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Vegetation Health Home
- VH Blended VIIRS (2013-present) & AVHRR (1981-2012)
- 4 km VH
- 1 km VH (NPP VIIRS from June 2012)
  - VIIRS VH Images browser
  - VIIRS VH Images By Leaflet map
- 1 km VH (NOAA-20 VIIRS from January 2018)
  - Comparison at EcoSystems: NOAA-20/VIIRS vs. S-NPP/VIIRS
- Background and Explanation
- Example NDVI Image in Various projections
- Unusual Events
  - 2006: Horn Of Africa
  - El Nino
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Ancillary Data

VH from S-NPP/VIIRS Study
- Browse Images
- Data Source and Research

AQUA/MODIS VH

Validation
- Australia- Wheat

Sensitivity Study

MSG/SEVIRI HDF Archive

MSG/SEVIRI VH

News

NPP first images for land cover was obtained on 11/21/2011

NPP VIIRS 500m GVI data were produced since May 2, 2012 to now

Data and images displayed on STAR sites are provided for experimental use only and are not official operational NOAA products. More information>>

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STAR - Global Vegetation Health Products :

Sensitivity of NDVI to the Noise of ABI Visible Band

The picture below shows how NDVI change with the noise of visible band. Click here for detail.