longwave.conductance {bigleaf} | R Documentation |
Longwave Radiative Transfer Conductance of the Canopy
longwave.conductance(Tair, LAI, constants = bigleaf.constants())
Tair |
Air temperature (deg C) |
LAI |
Leaf area index (m2 m-2) |
constants |
Kelvin - conversion degree Celsius to Kelvin |
the following formula is used (Martin, 1989):
Gr = 4 \sigma Tair^3 LAI / cp
Gr - |
longwave radiative transfer conductance of the canopy (m s-1) |
Martin P., 1989: The significance of radiative coupling between vegetation and the atmosphere. Agricultural and Forest Meteorology 49, 45-53.
longwave.conductance(25,seq(1,8,1))