Calculates the shortwave radiation balance by summing the shortwave incoming and outgoing radiation as well as diffused incoming and outgoing radiation.
Usage
rad_sw_bal(...)
# Default S3 method
rad_sw_bal(
datetime,
lon,
lat,
elev,
temp,
slope,
exposition,
valley,
surface_type,
...
)
# S3 method for class 'weather_station'
rad_sw_bal(weather_station, ...)Arguments
- ...
Named station fields, site parameters or model assumptions.
- datetime
POSIXlt or POSIXct date-time vector.
- lon
Longitude in degrees.
- lat
Latitude in degrees.
- elev
Elevation above sea level in m.
- temp
Air temperature in degrees C.
- slope
Slope in degrees.
- exposition
Exposition or aspect in degrees.
- valley
Logical value indicating whether the station is in a valley.
- surface_type
Surface-type label.
- weather_station
A weather_station object.
Details
The shortwave radiation balance (\(R_{sw}\)) is calculated as: $$R_{sw} = SW_{in} - SW_{out} + D_{in} - D_{out}$$ where: \(SW_{in}\) is the shortwave incoming radiation, \(SW_{out}\) is the shortwave outgoing radiation, \(D_{in}\) is the diffused incoming radiation, \(D_{out}\) is the diffused outgoing radiation.
Examples
# Calculate shortwave radiation balance
example_time <- as.POSIXlt("2023-08-06 12:00:00", tz = "UTC")
rad_sw_bal(datetime = example_time, lon = 10, lat = 50, elev = 100, temp = 15,
slope = 5, exposition = 180, valley = FALSE, surface_type = "lawn")
#> [1] 598.7045