Functions for calculating daily solar radiation and evapotranspiration

Description

Calculates daily solar radiation at horizontal surface using several well-known models (Bristow-Campbell, Hargreaves, Supit-Van Kappel, Mahmood-Hubbard, Angrstrom-Prescott). It also includes functions for model calibration based on groud-truth data as well as a function for auto-calibration. The FAO Penmann-Monteith equation to calculate evapotranspiration is also included.

Details

Package: sirad
Type: Package
Version: 2.3-3
Date: 2016-10-17
License: GPL-2
LazyLoad: yes

Author(s)

Jedrzej S. Bojanowski

Maintainer: Jedrzej S. Bojanowski <jedrzej.bojanowski@gmail.com>

Examples

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require(zoo)
data(Metdata)
A <- 0.21
B <- 0.57
sunshine <- Metdata$meteo$SUNSHINE
days <- Metdata$meteo$DAY
lat <- Metdata$LATITUDE
lon <- Metdata$LONGITUDE
plot(zoo(ap(days=days,lat=lat,lon=lon,extraT=NULL, A=A,B=B,SSD=sunshine),order.by=days))