Fraction of Absorbed Photosynthetically Active Radiation
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Pinty B., Clerici M., Andredakis I., Kaminski T., Taberner M., Verstraete M. M., Gobron N., Plummer S., and Widlowski J.-L. Exploiting the MODIS albedos with the Two-stream Inversion Package (JRC-TIP): 2. Fractions of transmitted and absorbed fluxes in the vegetation and soil layers. Journal of Geophysical Research – Atmospheres, 2011, 116 (D09106). https://doi.org/10.1029/2010JD015372
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This indicator shows variations in the vegetation health and / or cover which may be due to other stress factors than rainfall or soil moisture deficits, such as plant diseases. Therefore this indicator must be used jointly with other indicators giving information on the deficit of rainfall and / or soil moisture, in order to determine if the variation in the vegetation response (FAPAR) is linked with a drought event or not.