NonrectangularLRCFitter_predictGPP: NonrectangularLRCFitter predictGPP

In REddyProc: Post Processing of (Half-)Hourly Eddy-Covariance Measurements

NonrectangularLRCFitter predictGPP

Description

Nonrectangular hyperbolic Light Response function for GPP

Usage

NonrectangularLRCFitter_predictGPP(Rg, Amax, 
    alpha, conv)

Arguments

Rg	ppfd [numeric] -> photosynthetic flux density [mumol / m2 / s] or Global Radiation
Amax	numeric scalar or vector of length(Rg): beta parameter adjusted for VPD effect
alpha	numeric scalar or vector of length(Rg): alpha parameter: initial slope
conv	numeric scalar or vector of length(Rg): convexity parameter (see details)

Details

This function generalizes the RectangularLRCFitter_predictGPP by adding the convexity parameter conv. For conv -> 0 (logitconv -> -Inf): approaches the rectangular hyperbolic. For conv -> 1 (logitconv -> + Inf): approaches a step function. Expected values of conv are about 0.7-0.9 (Moffat 2012).

Value

numeric vector of length(Rg) of GPP

Author(s)

Department for Biogeochemical Integration at MPI-BGC, Jena, Germany <[e-mail]> [cph], Thomas Wutzler <[e-mail]> [aut, cre], Markus Reichstein <[e-mail]> [aut], Antje Maria Moffat <[e-mail]> [aut, trl], Olaf Menzer <[e-mail]> [ctb], Mirco Migliavacca <[e-mail]> [aut], Kerstin Sickel <[e-mail]> [ctb, trl], Ladislav <U+0160>igut <[e-mail]> [ctb]

See Also

LightResponseCurveFitter_predictGPP

REddyProc documentation built on May 29, 2024, 12:10 p.m.