fDLfun: Relative amount of daylight hours at a specified date and...

In tomjscox/GPPFourier: Calculate Gross Primary Production (GPP) from O2 Time Series

Description

Relative amount of daylight hours at a specified date and location.

Usage

fDLfun(date = "2016-07-01", phi = 51.176, lambda = 4.326, H = 0,
  method = c("insol", "almanac"))

Arguments

date	POSIXct object or date specificied in unambiguous format. See as.POSIXct
phi	Latitude
lambda	Longitude
H	Height of location where fDL is to be calculated
method	Method for daylength calculation. "insol" (default) makes use of the function daylength() from the package insol; "almanac" makes use of SunRiseSet implementing the algorithm from the Astronomical Almanac

Value

The fraction of daylight hours at the specified date and location. Sunrise and Sunset are calculated with SunRiseSet.

Author(s)

Tom Cox <[e-mail]>

See Also

SunRiseSet

Examples

fDLfun("2016-06-21")

tomjscox/GPPFourier documentation built on May 3, 2019, 2:57 p.m.