solazi: Calculates the solar azimuth

In ilyamaclean/microclima: microclimate modelling with R

Calculates the solar azimuth

Description

solazi is used to calculate the solar azimuth at any given location from the local time.

Usage

solazi(localtime, lat, long, julian, merid = round(long/15, 0) * 15, dst = 0)

Arguments

localtime	local time (decimal hour, 24 hour clock).
lat	latitude of the location for which the solar azimuth is required (decimal degrees, -ve south of the equator).
long	longitude of the location for which the solar azimuth is required (decimal degrees, -ve west of Greenwich meridian).
julian	Julian day expressed as an integer as returned by julday().
merid	an optional numeric value representing the longitude (decimal degrees) of the local time zone meridian (0 for GMT). Default is round(long / 15, 0) * 15
dst	an optional numeric value representing the time difference from the timezone meridian (hours, e.g. +1 for BST if merid = 0).

Value

a numeric value or vector of values representing the solar azimuth (decimal degrees).

Examples

# solar azimuth at noon on 21 June 2010, Porthleven, Cornwall, UK
jd <- julday (2010, 6, 21) # Julian day
solazi(12, 50.08, -5.31, jd)

ilyamaclean/microclima documentation built on Oct. 31, 2023, 11:41 p.m.