Ineichen: Ineichen-Perez clear sky model

Description Usage Arguments Value

Description

Fit Ineichen-Perez clear sky model.

Usage

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Ineichen(dayofyear, year, tz, latitude, longitude, interval, elevation,
  parameters = c(a = 0.50572, b = 6.07995, c = 1.6364, TL = 3))

Arguments

dayofyear

The day of year to fit the model to. May be either a single value or a vector.

year

The year to fit the model to. The model is fit over both dayofyear and year, with the shorter vector being recycled as normal.

tz

UTC Offset. Ex: Eastern Standard Time = -5.

latitude

Latitude at the location for which the model is to be fit.

longitude

Longitude at the location for which the model is to be fit.

interval

Number of minutes between clear sky points. Defaults to 1 (every minute). Must be an integer between 1 and 60, inclusive.

parameters

Ineichen-Perez model parameters. Named vector or list containing values for a, b, c and TL (linke turbidity).

Value

Vector of fitted irradiance values for the given time period.


dslaw/clearskies documentation built on May 15, 2019, 4:21 p.m.