earthkit.meteo.thermo.wet_bulb_potential_temperature_from_specific_humidity

earthkit.meteo.thermo.wet_bulb_potential_temperature_from_specific_humidity(t: ArrayLike, q: ArrayLike, p: ArrayLike, ept_method: str = 'ifs', t_method: str = 'direct') → ArrayLike

earthkit.meteo.thermo.wet_bulb_potential_temperature_from_specific_humidity(t: xarray.DataArray, q: xarray.DataArray, p: xarray.DataArray, ept_method: str = 'ifs', t_method: str = 'direct') → xarray.DataArray

earthkit.meteo.thermo.wet_bulb_potential_temperature_from_specific_humidity(t: earthkit.data.FieldList, q: earthkit.data.FieldList, p: earthkit.data.FieldList, ept_method: str = 'ifs', t_method: str = 'direct') → earthkit.data.FieldList

Compute the pseudo adiabatic wet bulb potential temperature from specific humidity.

Parameters:

• t (number or array-like) – Temperature (K)

• q (number or array-like) – Specific humidity (kg/kg)

• p (number or array-like) – Pressure (Pa)

• ept_method (str, optional) – Specifies the computation method for the equivalent potential temperature. The possible values are: “ifs”, “bolton35”, “bolton39”. (See ept_from_dewpoint() for details.)

• t_method (str, optional) –

  Specifies the method to find the temperature along the moist adiabat defined by the equivalent potential temperature. The possible values are as follows:

  • ”direct”: the rational formula defined by Eq (3.8) in [DaviesJones2008] is used

  • ”bisect”: temperature_on_moist_adiabat() with t_method = “bisect” is used

  • ”newton”: temperature_on_moist_adiabat() with t_method = “newton” is used

Returns:

Wet bulb potential temperature (K)

Return type:

number or array-like

The computations are the same as in wet_bulb_potential_temperature_from_dewpoint() (the dewpoint is computed from q with dewpoint_from_specific_humidity()).

Implementations

wet_bulb_potential_temperature_from_specific_humidity() calls one of the following implementations depending on the type of the input arguments:

• earthkit.meteo.thermo.array.wet_bulb_potential_temperature_from_specific_humidity() for array-like

• earthkit.meteo.thermo.xarray.wet_bulb_potential_temperature_from_specific_humidity() for xarray.DataArray

• earthkit.meteo.thermo.fieldlist.wet_bulb_potential_temperature_from_specific_humidity() for FieldList

The function returns an object of the same type as the input arguments.