FAPAR
The FAPAR is defined as the fraction of photosynthetically active radiation (400-700 nm) absorbed by the green vegetation (Fraction of Absorbed Photosynthetically Active Radiation).
This variable expresses the energy absorption capacity of the vegetation and thus its growing capacity.
It is an unitless measure comprised between 0 and 1. Canopy with a FAPAR of 1 totally absorbs the photosynthetically active radiation whereas a FAPAR of 0 indicates no absorption. FAPAR can be estimated by ground measurements (see here) or through satellite/airborne sensors.
Unit: percent or fraction
Available products over Australia:
- COPERNICUS BioPAR GEOv1
- COPERNICUS BioPAR GEOv2
- COPERNICUS PROBA-V GEOV3
- NASA MODIS (MCD15A3H v6)
- ESA MERIS (MGVI)
- NCDC AVHRR
- LSASAF MSG SEVIRI (MDfAPAR)
- UCL GlobAlbedo-derived (Please contact Mathias Disney: mathias.disney@ucl.ac.uk)
- LSASAF EPS AVHRR (pre-operational)