EcoHydRology (version 0.3.7)

Solar: Solar Radiation

Description

Solar radiation at the ground surface [kJ m-2 d-1]

Usage

Solar(lat, Jday, Tx, Tn, albedo, forest, slope, aspect)

Arguments

lat

latitdue [rad]

Jday

Julian date or day of the year [day]

Tx

maximum daily temperature [C]

Tn

minimum daily temperature [C]

albedo

surface albedo or reflectivity [-]

forest

forest or vegeation cover [-]

slope

slope of the ground [rad]

aspect

ground aspect [rad from north]

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(lat,Jday,Tx,Tn,albedo,forest,slope,aspect){
# solar radiation at the ground surface [kJ m-2 d-1]

#lat: latitdue [rad]
#Jday: Julian date or day of the year [day]
#Tx: maximum daily temperature [C]
#Tn: minimum daily temperature [C]
#albedo: surface albedo or reflectivity [-]
#forest: forest or vegeation cover [-]
#slope: slope of the ground [rad]
#aspect: ground aspect [rad from north]

return((1-albedo)*(1-forest)*transmissivity(lat,Jday,Tx,Tn)*PotentialSolar(lat,Jday)*slopefactor(lat,Jday,slope,aspect))
  }