Suomi NPP VIIRS - Vegetation Health Index - Weekly Composite, 9/2 to 9/8/2016 - click to enlarge
Vegetation Health
Team Lead: Xiwu "Jerry" Zhan
Product Description
- Vegetation health (VH) is a method derivation of global vegetation condition from VIS and IR channels of afternoon operational polar-orbiting satellites
- The method is based on three bio-physical and ecosystem laws
- The global VH (GVH) output is produced every week
- Briefly, algorithm includes retrieval of orbital VIS and IR, calculation of NDVI and BT, their daily and weekly mapping & development of time series, comprehensive NDVI & BT massaging and calculation of three VH indices
- The developed products include 16 & 4 km AVHRR/GVH and 4 km VIIRS/GVH
- High resolution (1 km) Vegetation Health Products from VIIRS for recent years(since 2015) are avalible online
Product and Data Access
Current Operational 4 km VIIRS Global Vegetation health (GVH) generates following weekly products:
- Vegetation Condition Index (VCI-4)
- Temperature Condition Index (TCI-4)
- Vegetation Health Index (VHI-4)
Coverage: Global land surface (75°N-55°S); Resolution: 0.036 degree (4 km)
Users
NWS/NCEP/CPC, SDA/FAS, USDA/WAOB