easyclimate.physics.energy.enthalpy¶

Atmospheric Enthalpy

Functions¶

calc_enthalpy(→ xarray.DataArray)

Calculate atmospheric enthalpy from temperature and humidity mixing ratio.

Module Contents¶

easyclimate.physics.energy.enthalpy.calc_enthalpy(temperature_data: xarray.DataArray, mixing_ratio_data: xarray.DataArray, temperature_data_units: Literal['celsius', 'kelvin', 'fahrenheit'], mixing_ratio_data_units: Literal['kg/kg', 'g/g', 'g/kg']) → xarray.DataArray¶

Calculate atmospheric enthalpy from temperature and humidity mixing ratio.

Enthalpy is a thermodynamic quantity equivalent to the internal energy plus the energy the system exerts on its surroundings. The enthalpy is a constant pressure function. As such, it includes the work term for expansion against the atmosphere.

\[T \cdot (1.01 + 0.00189 \cdot W) + 2.5 \cdot W\]

where the unit of \(T\) (atmospheric temperature) is degC, and \(W\) (mixing ratio) is g/kg.

Parameters¶

temperature_data: xarray.DataArray.: Atmospheric temperature.
mixing_ratio_data: xarray.DataArray.: The mixing ratio of a gas.
temperature_data_units: str.: The unit corresponding to temperature_data value. Optional values are celsius, kelvin, fahrenheit.
mixing_ratio_data_units: str.: The unit corresponding to mixing_ratio_data value. Optional values are \(\mathrm{kg/kg}\), \(\mathrm{g/g}\), \(\mathrm{g/kg}\) and so on.

Returns¶

Atmospheric enthalpy ( \(\mathrm{kJ/kg}\) ).: xarray.DataArray.