Absolute humidity — hum_absolute • fieldClim

Calculates absolute humidity from vapor pressure and air temperature.

Usage

hum_absolute(...)

# Default S3 method
hum_absolute(rh, temp, ...)

# S3 method for class 'weather_station'
hum_absolute(weather_station, ...)

Arguments

...: Additional arguments.
rh: Relative humidity in %.
temp: Temperature in °C.
weather_station: A weather_station object.

Value

Numeric. Absolute humidity in kg/m³.

Details

Absolute humidity ($AH$) is the mass of water vapor per unit volume of air. It is calculated from the vapor pressure and temperature using the formula: $$AH = \frac{0.21668 \times pvapor}{T}$$ where $pvapor$ is the vapor pressure and $T$ is the temperature in Kelvin. The formula and constants follow the Bendix (2004) humidity helper background used by the package.

References

Bendix 2004, p. 262.

Examples

# Calculate absolute humidity
hum_absolute(rh = 70, temp = 25)
#> [1] 0.01635011