PotSolarInst: Instantaneous Potential Solar Radiation
In EcoHydRology: A Community Modeling Foundation for Eco-Hydrology

Description Usage Arguments Author(s) References Examples

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

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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.

1 2	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)