solalt: Calculate the altitude and azimuth of the sun for a given...

In rforge/microclim: Microclimate predictions

Description

Calculates the angular altitude of the sun above the horizon for a given (solar) time, day of year and latitude

Usage

solalt(time, day, lat)
solazi(time, day, lat)

Arguments

time	solar time, in hours from midnight
day	day of the year (0 to 365)
lat	latitude, in degrees

Value

The sun's angular altitude above the horizon, or azimuth from north, in degrees.

Author(s)

Jon Bennie

See Also

solartime

Examples

times <- c(1:24)
alt <- solalt(time=times, day=175, lat=52)
azi <- solazi(time=times, day=175, lat=52)
par(mfrow=c(2,1))
plot(alt ~ times, type="l", xlab="Time", main="Solar altitude")
plot(azi ~ times, type="l", xlab="Time", main="Solar azimuth")

rforge/microclim documentation built on Feb. 21, 2022, 7:49 a.m.