ExtraterrestrialNormal: Normal Extraterrestrial Solar Radiation

In solrad: Calculating Solar Radiation and Related Variables Based on Location, Time and Topographical Conditions

Description

This function calculates extraterrestrial solar radiation normal to surface (in W/m2) for a given day of year, location and topogrpahy.

Usage

ExtraterrestrialNormal(DOY, Lat, Lon, SLon, DS, Slope, Aspect)

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
Slope	Site slope in degrees
Aspect	Site aspect with respect to the south in degrees

Examples

#Calculating solar incidence angle for two consecutive days on 45 degree latitude and
# 10 degree longitude

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

SextrNormal <- ExtraterrestrialNormal(DOY, Lat = 45, Lon=10, SLon=10, DS=0, Slope = 10, Aspect = 0)
#Note: only the difference between Lon and SLon matters not each value

plot(DOY, SextrNormal)

solrad documentation built on May 2, 2019, 12:38 p.m.