PotSolarInst {EcoHydRology} | R Documentation |
Potential Solar Radiation at a particular time of day. Defaults to W/m2, can also report in kJ/m2/d if units set to kJ/m2/d
PotSolarInst(Jday, hour = 12, lat = 42.44 * pi/180, sunrise = NULL, sunset = NULL, SolarNoon = mean(c(sunrise, sunset)), units = "Wm2", latUnits = "unknown")
Jday |
Day of the year [-] |
hour |
Time of the day in hours [0-24 hr] |
lat |
latitude. Default is radians, but will automatically convert from degrees if value is larger than 1.62 or less than -1.62 |
sunrise |
Time of sunrise used to calculate solar noon [0-24 hr] |
sunset |
Time of sunset used to calculate solar noon [0-24 hr] |
SolarNoon |
Time of solar noon. Can be calculated from sunrise and sunset times. [hr] |
units |
Units of the result. Defaults to W/m2 |
latUnits |
Latitude units can be explicitly stated here, options are 'radians', 'degrees' or default is 'unknown', which will assume radians unless the absolute value of lat is greater than pi/2 |
Josephine Archibald
Lawrence Dingman. Physical Hydrology. Waveland Press, Inc. Illinois, 2002.
PotSolarInst(Jday=150, hour = 15, lat = 42.44, SolarNoon = 12.5) PotSolarInst(Jday=c(1,50,100,150), hour = c(9,10,12,17), lat = -pi/4, SolarNoon = 12.5)