The fAPAR is
defined as the fraction of photosynthetically active radiation absorbed
by vegetation for photosynthesis activity. The fAPAR can be
instantaneous or daily.
The production of fAPAR relies
on the outputs of the current
ESA / GLOBCARBON
and FP5 / CYCLOPES
projects, which are available, respectively, at
VITO and
MEDIAS-France.
Global FAPAR at 0.5° resolution derived from
VEGETATION measurements for years 2002 and 2003
MEDIAS-France defines the customization specifications of the fAPAR,
to fit the requirements of
ONC, and
OFM:
- ONC needs 0.5°x0.5° tiled averages (mean and standard deviation values)
maps of fAPAR for 8 vegetation classes ("conifer evergreen
forest", "deciduous forest", "broadleaf evergreen forest","grassland
C3","grassland C4", "crops C3", "crops C4"). The number of valid pixels
available to compute the average is also provided, because it is useful
to assess the product quality.
- OFM requires fAPAR to calculate the Dry Matter Productivity product over
Europe. FAPAR from 1st April to 30th June
for each year,is used in validation process over Poland in order to
monitor the crop growth cycle.
This customisation has been applied to the version 1 of CYCLOPES FAPAR products. These customized products are available for download through the link below.
Today, the version 3 of CYCLOPES FAPAR products is available through the POSTEL web site with associated scientific and technical documentation.
