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STAR - Global Vegetation Health Products : Downloading Vegetation Health Products Data

Blended Vegetation Health Product (Blended-VHP)

Blended-VHP is a re-processed Vegetation Health data set derived from VIIRS (2013-present) and AVHRR (1981-2012) GAC data. It was processed by the newly developed operational VHP system. The new VHP system was improved from GVI-x VH system and some changes/improvement were made to meet the requirement of operation and improve data quality. It can process GAC data from NOAA-19, as well as FRAC data from METOP A and METOP-B. It also produce vegetation health products from VIIRS on NPP and JPSS satellites. VHP system is operationaly running at NOAA Office of Satellite and Product Operations(OSPO) and providing official VHP products. This web site provides recent VH data as a backup/alternative data source. VHP product posted on this VH web site should be consistent to that released by OSPO.

Blended-VHP products are saved in 3 NetCDF:

ND file (*.ND.nc or *.ND.hdf): contains raw NDVI and BT
SM file (*.SM.nc or *.SM.hdf): contains noise removed NDVI and BT
VH file (*.VH.nc or *.VH.hdf): contains VCI,TCI,VHI:
-- Vegetation Condition Index (VCI),
-- Temperature Condition Index(TCI),
-- Vegetation Health Index (VHI)

Starting from week 17, 2018, the following Blended-VHP data (VIIRS from 2013 to present, AVHRR from 1981 to 2012) are posted on the HTTPS links:

Note: 'wget' command is recommended to programmatically pull data (FTP based commands will no longer work).

Frequently asked questions

Q1: Where to find the higher resolution (example: 1km ) Vegetation Helath data?

NESDIS/STAR vegeation health team is the science team responsible for the product science algorithms. We provide global 4km VH product in NetCDF (and GeoTIFF) format through this web site for demo purpose only. The 1km resolution global weekly vegetation health data products are generated operationally by NESDIS Office of Satellite Product and Operations (OSPO). User may order 1km VHP data at NOAA CLASS also from 2019 (scroll to the bottom part of the webpage and find out "VIIRS Vegetation Health and Drought Products (VHDP) at 1 km");

Q2: 4km VH in GeoTiff format

The long term 4km VH products from 1981 can be found at this location where you'll see weekly smoothed NDVI (SMN), Brightness Temperature (SMT), temperature condition index (TCI), vegetation condition index (VCI) and vegetation health index (VHI) data are saved in separate tiff files for 2024 and 2025 while data files of those variables for years earlier than 2024 are packed in to annual .gz files;

Q3: Region averaged VHP data

Regional VHP data at 4 km resolution in ascii files for Texas state for "WHEA" (wheat crop) is already available from this webpage.
Those data for other regions or crops are also available from this webpage.