Air Density — pres_air_density • fieldClim

Calculates the air density.

Usage

pres_air_density(...)

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

# Default S3 method
pres_air_density(elev, temp, ...)

Arguments

...: Additional arguments.
weather_station: A weather_station object.
elev: Elevation above sea level in m.
temp: Air temperature in degrees C.

Value

Air density in kg/m³.

Details

The air density ($\rho$) is calculated using the formula: $$\rho = \frac{p \cdot 100}{R \cdot T}$$ where: $p$ is the air pressure in hPa, $R$ is the specific gas constant for air (287.05 m²/s²/K), and $T$ is the temperature in Kelvin (K). This helper uses the package pressure and temperature defaults documented in pres_p() and follows the Bendix (2004) thermodynamic-helper background used elsewhere in the package.

References

Bendix 2004, p. 261-262, thermodynamic-helper background.

Examples

# Calculate air density at an elevation of 500 meters and temperature of 15°C
pres_air_density(elev = 500, temp = 15)
#> [1] 1.15448