# Functions for Calculating Daily Solar Radiation and Evapotranspiration

## Documentation for package ‘sirad’ version 2.3-3

- DESCRIPTION file.

## Help Pages

sirad-package | Functions for calculating daily solar radiation and evapotranspiration
ap | Angstrom-Prescott solar radiation model
apcal | Calibrate Angstrom-Prescott model
bc | Bristow-Campbell model
bcauto | Auto-calibrate Bristow-Campbell model
bccal | Calibrate Bristow-Campbell model
cst | Estimate clear sky transmissivity
cstRead | Read values of clear sky transmissivity
dayOfYear | Convert 'Date' to number of day in a year
degrees | Convert radians to degrees
deltaVP | Slope of saturation vapour pressure curve
es | Mean saturation vapour pressure
et0 | FAO Penman-Monteith evapotranspiration equation
extrat | Calculate extraterrestrial solar radiation
ha | Hargreaves solar radiation model
hacal | Calibrate Hargreaves model
hauto | Auto-calibrate Hargreaves model
Metdata | Weather data
mh | Mahmood-Hubbard solar radiation model
modeval | Model performance statistics.
psychC | Psychrometric constant
radians | Convert degrees to radians
rnl | Net longwave radiation
rns | Net shortwave radiation
sirad | Functions for calculating daily solar radiation and evapotranspiration
su | Supit-Van Kappel solar radiation model
sucal | Calibrate Supit-Van Kappel model
wind2 | Convert wind speed measured at a certain height to the wind speed at 2 meters