Convert CO2 mole fraction to partial pressure — xCO2_to

Converts CO2 mole fraction, xCO2, to the water-vapor-corrected partial pressure, pCO2.

Usage

xCO2_to_pCO2(xCO2_ppm, temp_water, atmo_press, press_units, ...)

Arguments

xCO2_ppm: Numeric vector. Mole fraction of CO2 in air in parts per million.
temp_water: Numeric vector. Water temperature in degrees Celsius.
atmo_press: Numeric vector. Atmospheric pressure.
press_units: Character string giving the units of atmo_press. See convert_pressure() for accepted pressure units.
...: Additional arguments passed to calc_vapor_press(), such as salinity or method.

Value

Numeric vector of partial pressure of CO2 in microatmospheres.

Details

The conversion uses: $$pCO2 = (P_{atm} - P_{H2O}) \cdot xCO2$$ where atmospheric pressure and water vapor pressure are in atm and xCO2 is supplied in parts per million.

References

Dickson, A.G., Sabine, C.L., and Christian, J.R. (Eds.) (2007). Guide to best practices for ocean CO2 measurements. PICES Special Publication 3.

Examples

xCO2_to_pCO2(
  xCO2_ppm = 420,
  temp_water = 20,
  atmo_press = 101.325,
  press_units = "kPa",
  salinity = 0,
  method = "MIMSY"
)
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