partGL_RHLightResponse: partGL RHLightResponse

In REddyProc: Data processing and plotting utilities of (half-)hourly eddy-covariance measurements

Description

Rectungular Hyperbolic Light Response function: (Xu & Baldocchi, 2004; Falge et al., 2001; Lasslop et al., 2010)

Usage

partGL_RHLightResponse(theta, Rg, VPD, Temp, VPD0 = 10, 
    fixVPD = FALSE)

Arguments

theta	theta [numeric] -> parameter vector (theta[1]=kVPD (k), theta[2]=beta0 (beta), theta[3]=alfa, theta[4]=Rref (rb), theta[5]=E0) << E0: Temperature sensitivity ("activation energy") in Kelvin (degK) #get("testparams", envir=environment(foo)
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	fixVPD TRUE or FALSE -> if TRUE the VPD effect is not considered

Details

with fixes E_0.n for the estimation of Rd VPD effect included according to Lasslop et al., 2010

If theta is a matrix, a different row of parameters is used for different entries of other inputs

Author(s)

(Department for Biogeochemical Integration at MPI-BGC, Jena, Germany)

REddyProc documentation built on May 2, 2019, 5:19 p.m.