EcoHydRology (version 0.3.8)

Longwave: Daily Longwave Radiation

Description

Daily longwave radiation based on the Sephan-Boltzman equation [kJ m-2 d-1]

Usage

Longwave(emissivity, temp)

Arguments

emissivity

emissivity [-]

temp

temperature of the emitting body [C]

Value

Examples

##---- Should be DIRECTLY executable !! ----
##-- ==>  Define data, use random,
##--	or do  help(data=index)  for the standard data sets.

## The function is currently defined as
function(emissivity,temp){
# daily longwave radiation based on the Sephan-Boltzman equation [kJ m-2 d-1]

#emissivity: [-]
#temp: temperature of the emitting body [C]

SBconstant<-0.00000489 #[kJ m-2 K-4 d-1]

tempK<-temp+273.3 #[degrees K]

return(emissivity*SBconstant*tempK^4)
  }