Altitude {solrad}

Solar Altitude Angle

Description

This function solar altitude angle (in degrees) for a given day of year and location.

Usage

Altitude(DOY, Lat, Lon, SLon, DS)

Arguments

DOY

Day of year

Lat

Latitude in degrees

Lon

Longitude in degrees

SLon

Standard longitude (based on time zone) in degrees

DS

Daylight saving in minutes

Examples

#Calculating solar altitude angle for two consecutive days

DOY <- seq(0, 2, .05)

alpha <- Altitude(DOY, Lat = 45, Lon=0, SLon=0, DS=60)
#Note: only the difference between Lon and SLon matters not each value

plot(DOY, alpha)