daylength {pheno}

Daylength at julian day i on latitude l

Description

Calculates daylength [h] and declination angle delta [radians] on day i [julian day of year] for latitude l [degrees].

Usage

daylength(i,l)

Arguments

i

Integer as julian day of year (1-365)

l

Float as latitude [degress]

Value

dl

daylength [h]

delta

declination angle [degrees]

Author(s)

Joerg Schaber

Examples

	daylength(as.integer(120),63)