calcSolarZenith: Calculate solar zenith angle from timestamp

In edwardpmorris/FASTSpectra: Parse and radiometrically correct Ocean Optics spectra files

Description

Given the timestamp, location and time zone calculate the solar zenith angle for a observer. Requires package insol.

Usage

calcSolarZenith(time_stamp, latitude, longitude, timezone = 0)

Arguments

time_stamp	A timestamp that can be parsed by POSIXct, such ISO8601. This must be UTC.
latitude	Latitude of observer in decimal degrees, west is negative.
longitude	Latitude of observer in decimal degrees, south is negative.
timezone	Timezone of timestamp, west is negative.

Value

The Solar Zenith Angle in degrees

Examples

time_stamp = "2014-11-26 11:30:26"
latitude = 36.529688
longitude = -6.292657
calcSolarZenith(time_stamp, latitude, longitude, timezone=0)
compare to https://www.nrel.gov/midc/solpos/spa.html
retrieved 2016-07-16: 11/26/2014,11:30:00,58.339855

edwardpmorris/FASTSpectra documentation built on May 15, 2019, 11:03 p.m.