Calculate Air Density

Function to calculate air density based on temperature (°C), relative humidity in (%), and atmospheric pressure (hPa).

Usage

calcAD(Temp, RH, P_atm = 1013.25, R_dry = 287.058, R_vap = 461.495, ...)

Arguments

Temp

Temperature (°Celsius)

RH

Relative Humidity (0-100%)

P_atm

Atmospheric pressure = 1013.25 (hPa)

R_dry

Specific gas constant for dry air = 287.058 (J/(kg·K))

R_vap

Specific gas constant for water vapor = 461.495 (J/(kg·K))

...

Addtional arguments to supply to calcPws

Value

Air density in kg/m³

See also

calcMR for calculating mixing ratio

calcAD for calculating air density

calcPw for calculating water vapour pressure

calcPws for calculating water vapour saturation pressure

Examples

calcAD(20, 50)
#> [1] 1.204032

head(mydata) |> dplyr::mutate(AirDensity = calcAD(Temp, RH))
#> # A tibble: 6 × 6
#>   Site   Sensor Date                 Temp    RH AirDensity
#>   <chr>  <chr>  <dttm>              <dbl> <dbl>      <dbl>
#> 1 London Room 1 2024-01-01 00:00:00  21.8  36.8       1.20
#> 2 London Room 1 2024-01-01 00:15:00  21.8  36.7       1.20
#> 3 London Room 1 2024-01-01 00:29:59  21.8  36.6       1.20
#> 4 London Room 1 2024-01-01 00:44:59  21.7  36.6       1.20
#> 5 London Room 1 2024-01-01 00:59:59  21.7  36.5       1.20
#> 6 London Room 1 2024-01-01 01:14:59  21.7  36.2       1.20