computeDayLengthDoy {solartime}

computeDayLengthDoy

Description

Compute the Day-length in hours for given time and coordinates

Usage

computeDayLengthDoy(doy, latDeg)

Arguments

doy

integer vector with day of year [DoY, 1..366], same length as Hour or length 1

latDeg

Latitude in (decimal) degrees

Value

numeric vector of length(doy) giving the time between sunrise and sunset in hours

Author(s)

Thomas Wutzler

Examples

doy <- 1:366
plot( computeDayLengthDoy(doy, latDeg = 51) ~ doy)
# north pole: daylength 0 and 24 hours
plot( computeDayLengthDoy( doy, latDeg = +80) ~ doy )
plot( computeDayLengthDoy( doy, latDeg = -80) ~ doy )