LightResponseCurveFitter computeLRCGradient — LightResponseCurveFitter

Gradient of LightResponseCurveFitter_predictLRC

LightResponseCurveFitter_computeLRCGradient(theta, 
    Rg, VPD, Temp, VPD0 = 10, fixVPD = (k == 
        0), TRef = 15)

Arguments

theta: theta [numeric] -> parameter vector (theta[1] = k (k), theta[2] = beta (beta), theta[3] = alpha, theta[4] = RRef (rb), theta[4] = E0)
Rg: ppfd [numeric] -> photosynthetic flux density [umol / m2 / s] or Global Radiation
VPD: VPD [numeric] -> Vapor Pressure Deficit [hPa]
Temp: Temp [degC] -> Temperature [degC]
VPD0: VPD0 [hPa] -> Parameters VPD0 fixed to 10 hPa according to Lasslop et al 2010
fixVPD: boolean scalar or vector of nrow(theta): fixVPD if TRUE the VPD effect is not considered and VPD is not part of the computation
TRef: numeric scalar of Temperature (degree Celsius) for reference respiration RRef

Author

Department for Biogeochemical Integration at MPI-BGC, Jena, Germany <REddyProc-help@bgc-jena.mpg.de> [cph], Thomas Wutzler <twutz@bgc-jena.mpg.de> [aut, cre], Markus Reichstein <mreichstein@bgc-jena.mpg.de> [aut], Antje Maria Moffat <antje.moffat@bgc.mpg.de> [aut, trl], Olaf Menzer <omenzer@bgc-jena.mpg.de> [ctb], Mirco Migliavacca <mmiglia@bgc-jena.mpg.de> [aut], Kerstin Sickel <ksickel@bgc-jena.mpg.de> [ctb, trl], Ladislav <U+0160>igut <sigut.l@czechglobe.cz> [ctb]