get_Rso_daily: Get clear sky shortwave radiation (Rso)

In gopalpenny/fao56:

Description

Get clear sky shortwave radiation, Rso (FAO 56, Eq. 36) in MJ/m^2/day

Usage

get_Rso_daily(Ra, z)

Arguments

Ra	downward shortwave radiation, MJ/m^2/day
z	elevation above sea level, m

Details

This function calculates clear-sky shortwave radiation, in MJ/m^2/day. It uses Eq. 37 from FAO 56 in Chapter 3:

Rso = (0.75 + 2e-5*z) * Ra

Note that different values for as and bs should be used if available and then a different equation (36) can be used.

Examples

lat <- -22.9 # Rio de Janeiro
date <- "2019-05-15"
n <- 220 / 31 # 220 hours in a month / 31 days
N <- get_daylight_hours(lat, date)
Ra <- get_Ra_daily(lat, date)
Rso <- get_Rso_daily(Ra, z = 100)

gopalpenny/fao56 documentation built on Feb. 14, 2022, 6:01 a.m.