Meteorological Tools
Adjust wind speed data
Constants
Control default values
Slope of the saturation vapor pressure curve
Dayligth hours (N)
Inverse relative distance Earth-Sun
Saturation Vapor Pressure
Estimate soil heat flux (G)
Estimate atmospheric pressure (P)
Estimate solar radiation (Rs)
FAO-56 Penman-Monteith grass reference evapotranspiration
Prepare date
psychrometric constant
Extraterrestrial radiation
Net radiation (Rn)
Net longwave radiation (Rnl)
Net solar or net shortwave radiation (Rns)
Clear-sky solar radiation (Rso)
Saturation Vapor Pressure
Solar declination
Actual vapor pressure
Solar time angle
Sunset hour angle
Meteorological Tools following the FAO56 irrigation paper of Allen et al. (1998) [1]. Functions for calculating: reference evapotranspiration (ETref), extraterrestrial radiation (Ra), net radiation (Rn), saturation vapor pressure (satVP), global radiation (Rs), soil heat flux (G), daylight hours, and more. [1] Allen, R. G., Pereira, L. S., Raes, D., & Smith, M. (1998). Crop evapotranspiration-Guidelines for computing crop water requirements-FAO Irrigation and drainage paper 56. FAO, Rome, 300(9).