EcoHydRology (version 0.3.7)

slopefactor: Slope Factor

Description

Adjusts solar radiation for land slope and aspect relative to the sun, 1=level ground

Usage

slopefactor(lat, Jday, slope, aspect)

Arguments

lat

latitdue [rad]

Jday

Julian date or day of the year [day]

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,slope,aspect){
# slopefactor: adjusts solar radiation for land slope and aspect relative to the sun, 1=level ground

#lat: latitdue [rad]
#Jday: Julian date or day of the year [day]
#slope: slope of the ground [rad]
#aspect: ground aspect [rad from north]

return(cos(slope)-sin(slope)*1/tan(solarangle(lat,Jday))*cos(aspect-solaraspect(lat,Jday)))
  }