BackForward Variable: Fraction of Absorbed PAR (FAPAR)

Definition
Full name Fraction of Absorbed PAR (FAPAR)
Definition Fraction of PAR absorbed by vegetation (land or marine) for photosynthesis processes (generally around the 'red' )
Measuring Units % Uncertainty Units %
Horizontal Res Units km Vertical Res Units
Stability Units % (Stability /decade)

 

Comment:
Last modified: 2011-10-10
Applied in OSCAR/Space Gap Analysis: Yes
Classification
  • Domain: Atmosphere
    • Sub-domain: Aerosols and radiation
      • Variable: Fraction of Absorbed PAR (FAPAR)
        • Measured in Layers:
          • Sea surface
          • Bulk
          • Land surface
  • Cross-cutting themes:

Requirements defined for Fraction of Absorbed PAR (FAPAR)  (6)

This tables shows all related requirements. For more operations/filtering, please consult the full list of Requirements
Note: In reading the values, goal is marked blue, breakthrough green, threshold orange
Application-dependent Technical Priority (ATP) Magenta and Relative priority of the attributes Red

Id Variable Layer App Area ATP Uncertainty Layer/s Quality Coverage Quality Stability / decade Hor Res Ver Res Obs Cyc Timeliness Coverage Conf Level Val Date Source General Comment Application Area Comment Horizontal Coverage Comment Observation Comment Performance Comment
38 Fraction of Absorbed PAR (FAPAR) Land surface 2.9 Agricultural Meteorology 5 %
8 %
20 % 		5 km
13.6 km
100 km 		60 min
6 h
7 d 		24 h
2 d
5 d 		Global land reasonable 2003-10-20 ET ODRRGOS Photosynthesis estimation; crop procductivity eval
277 Fraction of Absorbed PAR (FAPAR) Land surface 2.1 Global Numerical Weather Prediction and Real-time Monitoring 5 %
10 %
20 % 		2 km
10 km
50 km 		24 h
5 d
10 d 		3 h
24 h
10 d 		Global land reasonable 2009-02-10 John Eyre
359 Fraction of Absorbed PAR (FAPAR) Land surface 2.2 High-Resolution Numerical Weather Prediction 5 %
10 %
20 % 		1 km
5 km
20 km 		12 h
24 h
2 d 		24 h
3 d
7 d 		Global land reasonable 2011-07-29 JF Mahfouf
664 Fraction of Absorbed PAR (FAPAR) Land surface Climate-TOPC (deprecated) 5 %
7 %
10 % 		0.25 km
0.5 km
2 km 		24 h
3 d
30 d 		10 d
15 d
30 d 		Global land firm 2007-07-19 TOPC
751 Fraction of Absorbed PAR (FAPAR) 2.4 Sub-Seasonal to Longer Predictions 5 %
7 %
10 % 		50 km
100 km
500 km 		7 d
12 d
30 d 		24 h
3 d
30 d 		Global land firm 2009-01-19 Laura Ferranti
827 Fraction of Absorbed PAR (FAPAR) Land surface 2.5 Atmospheric Climate Monitoring 10 % 3 % 0.05 km
0.2 km
0.5 km 		24 h Global reasonable 2019-09-30 GCOS-200: The Global Observing System for Climate: Implementation Needs (Published 2016) Requirements in the GCOS-200 IP, Annex A, are only specified at the goal level.