solarindex: Calculate proportion of solar beam incident on a slope

In rforge/microclim: Microclimate predictions

Description

Calculates the proportion of the intensity of a direct solar beam that will strike a surface of given slope(s) and aspect(s).

Usage

solarindex(slope, aspect, azi, alt)

Arguments

slope	Slope, in degrees from horizontal
aspect	Aspect, in degrees clockwise from north
azi	Solar azimuth, in degrees clockwise from north
alt	Solar altitude, in degrees from the horizon

Value

Proportion of direct solar radiation incident on a surface. If any of the arguments comprise more than a single value (possibly rasters), they should be equal to each other in dimensions and extent and the output will be of corresponding size.

Author(s)

Jon Bennie

See Also

solalt, solazi

Examples

slopes <- c(0:45)
incidence <- solarindex(slope=slopes, aspect=45, azi=180, alt=30) 
plot(incidence ~ slopes, type="l", xlab="Slope (degrees)")

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