ECV Products and Requirements for Fraction of Absorbed Photosynthetically Active Radiation (FAPAR)
These products and requirements reflect the Implementation Plan 2016 (GCOS-200). GCOS is reviewing and will update the requirements until 2022. More information on: gcos.wmo.int.
| PRODUCT | DEFINITION | FREQ. | RES. | REQUIRED MEASUREMENT UNCERTAINTY | STABILITY | STANDARDS/ REFERENCES |
| Maps of FAPAR for modelling | FAPAR is the fraction of the incoming radiation in the 400-700 nm band absorbed by the leaves, which can be used for photosynthesis. Definitions differ according to illumination conditions and leaf state. | Daily | 200/ 500m | max(10%; 0.05) | max(3%; 0.02) | |
| Maps of FAPAR for adaptation | FAPAR is the fraction of the incoming radiation in the 400-700 nm band absorbed by the leaves, which can be used for photosynthesis. Definitions differ according to illumination conditions and leaf state. | 50m | max(10%; 0.05) | max(3%; 0.02) |
