NOAA Office of Satellite and Product Operations

SPECIAL MESSAGE:

GOES-13 Sounder IR data is not available. All products from GOES-13 (GOES-East) Sounder IR data have been halted and distribution has been stopped except the Sounder ASOS SCP products for CONUS, which are replaced with GOES-East Imager ASOS SCP products for CONUS. Engineers are investigating the problem.

Vegetation Health Product (VHP)

The Vegetation Health Product (VHP) consists of gridded weekly global vegetation indices (VCI, TCI and VHI) derived from AVHRR GAC orbital data for the global area between latitude 55°S to 75°N. The projection of VHP is Plate Carree (also called geographic projection or equal latitude-longitude interval grid). The interval of grid is 0.036° (about 4km at equator). Noise is minimized by applying the time series smoothing technique and other correction algorithms.


VHP Example Details on the algorithm can be found at Algorithm Description.