Simulates canopy assimilation (von Caemmerer model)

Usage

eCanA(LAI, doy, hour, solarR, AirTemp, RH, WindS, Vcmax, Vpmax, Vpr, Jmax, Ca = 380, Oa = 210, StomataWS = 1)

Arguments

LAI

leaf area index.

doy

day of the year, (1--365).

hour

hour of the day, (0--23).

solarR

solar radiation (micro mol /m2/s).

AirTemp

temperature (Celsius).

RH

relative humidity (0--1).

WindS

wind speed (m/s).

Vcmax

Maximum rubisco activity (micro mol /m2/s).

Vpmax

Maximum PEP carboxylase activity (micro mol /m2/s).

Vpr

PEP regeneration rate (micro mol /m2/s).

Jmax

Maximal electron transport rate (micromol electrons m-2 s-1).

Ca

atmospheric carbon dioxide concentration (ppm or microbar) (e.g. 380).

Oa

atmospheric oxygen concentration (mbar) (e.g. 210).

StomataWS

Effect of water stress on assimilation.

Examples

## <strong>Not run</strong>: 
# data(doy124)
# tmp1 <- numeric(24)
# for(i in 1:24){
#   lai <- doy124[i,1]
#   doy <- doy124[i,3]
#   hr  <- doy124[i,4]
#   solar <- doy124[i,5]
#   temp <- doy124[i,6]
#   rh <- doy124[i,7]/100
#   ws <- doy124[i,8]
# 
#   tmp1[i] <- CanA(lai,doy,hr,solar,temp,rh,ws)
# }
# 
# plot(c(0:23),tmp1,
#      type='l',lwd=2,
#      xlab='Hour',
#      ylab=expression(paste('Canopy assimilation (mol  ',
#      m^-2,' ',s^-1,')')))
# ## <strong>End(Not run)</strong>