illumR: Vectorized version of Janiczek and DeYoung (1987) for R

In sean-rohan/trawllight: Derive apparent optical properties from trawl-mounted light sensors

Vectorized version of Janiczek and DeYoung (1987) for R

Description

Vectorized version of Janiczek and DeYoung (1987) for R

Usage

illumR(IY, IM, ID, LO, FINIT, ZZ, SK, HR, full.output = FALSE)

Arguments

IY	Input year.
IM	Input month
ID	Input day
LO	Longitude
FINIT	LATITUDE
ZZ	Which timezone (0 = GMT, 1 = standard zone time, 2 = local mean time)
SK	Sky condition. (1 = Sun or moon visible, sky less than 70 percentovercast, 2 = sun or moon obscured by thin clouds, 3 = sun or moon obscured by average clouds, 10 = sun/moon obscured by dark stratus clouds (rare))
HR	Time based on a 24 hour clock, as a numeric vector (e.g. 820, 1330)
full.output	If true, returns sun and moon separately.

Value

Illuminance (lux) at the Earth's surface.

Author(s)

Sean Rohan [e-mail]

sean-rohan/trawllight documentation built on Jan. 13, 2023, 10:43 p.m.