Learn R Programming

⚠️There's a newer version (2.3-3) of this package.Take me there.

sirad (version 2.3-0)

Functions for Calculating Daily Solar Radiation and Evapotranspiration

Description

Calculating daily global solar radiation at horizontal surface using several well-known models (i.e. Angstrom-Prescott, Supit-Van Kappel, Hargreaves, Bristow and Campbell, and Mahmood-Hubbard), and model calibration based on ground-truth data, and (3) model auto-calibration. The FAO Penmann-Monteith equation to calculate evapotranspiration is also included.

Copy Link

Version

Install

install.packages('sirad')

Monthly Downloads

970

Version

2.3-0

License

GPL-2

Homepage

http://sirad.r-forge.r-project.org/

Maintainer

Jedrzej S Bojanowski

Last Published

October 18th, 2015

Functions in sirad (2.3-0)

Convert 'Date' to number of day in a year

Calibrate Angstrom-Prescott model

Estimate clear sky transmissivity

Model performance statistics.

Calibrate Hargreaves model

Functions for calculating daily solar radiation and avapotranspiration

Hargreaves solar radiation model

Slope of saturation vapour pressure curve

Net shortwave radiation

Convert wind speed measured at a certain height to the wind speed at 2 meters

Net longwave radiation

Convert degrees to radians

Angstrom-Prescott solar radiation model

Supit-Van Kappel solar radiation model

Auto-calibrate Bristow-Campbell model

Mean saturation vapour pressure

FAO Penman-Monteith evapotranspiration equation

Auto-calibrate Hargreaves model

Extract punctual data from CM SAF data.

Psychrometric constant

Calibrate Supit-Van Kappel model

Mahmood-Hubbard solar radiation model

Bristow-Campbell model

Read values of clear sky transmissivity

Calibrate Bristow-Campbell model

Convert radians to degrees

Calculate extraterrestrial solar radiation