Solar: Solar Radiation
In EcoHydRology: A Community Modeling Foundation for EcoHydrology

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

1 2	Solar(lat, Jday, Tx, Tn, albedo=0.2, forest=0, slope=0, aspect = 0, units="kJm2d", latUnits = "unknown", printWarn=TRUE)

`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]
`units`	Units of the result. Defaults to kJ/m2/d, changing this to "Wm2" will make output in 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
`printWarn`	Will print a warning about latitude if set to TRUE