solazi: Calculates the solar azimuth

In ilyamaclean/microctools: Various worker functions for microclimc package

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, jd, 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).
jd	Julian day expressed as an integer as returned by jday().
merid	optional value representing the longitude (decimal degrees) of the local time zone meridian (0 for GMT). Default is round(long / 15, 0) * 15
dst	optional 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 <- jday (2010, 6, 21) # Julian day
solazi(12, 50.08, -5.31, jd)

ilyamaclean/microctools documentation built on Jan. 25, 2023, 5:29 a.m.