EcoHydRology (version 0.4.7)

PotentialSolar: Potential Solar Radiation

Description

Potential solar radiation at the edge of the atmospher [kJ m-2 d-1]

#lat: latitdue [rad] #Jday: Julian date or day of the year [day]

Usage

PotentialSolar(lat, Jday)

Arguments

lat

Jday

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){
# potential solar radiation at the edge of the atmospher [kJ m-2 d-1]

#lat: latitdue [rad]
#Jday: Julian date or day of the year [day]

# solar declination [rad]
dec<-declination(Jday)

return(117500*(acos(-tan(dec)*tan(lat))*sin(lat)*sin(dec)+cos(lat)*cos(dec)*sin(acos(tan(dec)*tan(lat))))/pi)
  }