Humidity variables using the GOTM bulk formulation — calc_humidity

Vectorised port of AEME::calc_humidity_vars(): saturation and actual vapour pressure, specific humidities and moist air density, from any of four humidity inputs.

Usage

calc_humidity_vars(
  hum,
  hum_method = 1,
  airp,
  tw,
  ta,
  rgas = 287.05,
  kelvin = 273.15,
  const06 = 0.62198
)

Arguments

hum: humidity input, interpreted according to hum_method.
hum_method: 1 relative humidity (percent), 2 wet-bulb temperature, 3 dew point temperature, 4 specific humidity (kg/kg).
airp: air pressure, Pa.
tw: water-surface temperature, degC (or K, auto-detected).
ta: air temperature, degC (or K, auto-detected).
rgas: gas constant for dry air, J/kg/K.
kelvin: degC to K offset.
const06: ratio of molecular weights of water and dry air.

Value

list of numeric vectors: es, qs, ea, qa, rhoa.

Examples

calc_humidity_vars(hum = 70, hum_method = 1, airp = 101325,
                   tw = 18, ta = 15)
#> $es
#> [1] 2021.535
#> 
#> $qs
#> [1] 0.01250316
#> 
#> $ea
#> [1] 1192.933
#> 
#> $qa
#> [1] 0.007355426
#> 
#> $rhoa
#> [1] 1.219433
#>