moist_air_specific_heat_pressure#

metpy.calc.moist_air_specific_heat_pressure(specific_humidity)[source]#

Calculate C_pm, the specific heat at constant pressure for a moist air parcel.

Parameters:

specific_humidity (pint.Quantity)

Returns:

pint.Quantity – Specific heat capacity of air at constant pressure

Examples

>>> from metpy.calc import moist_air_specific_heat_pressure
>>> from metpy.units import units
>>> moist_air_specific_heat_pressure(11 * units('g/kg'))
<Quantity(1014.07575, 'joule / kelvin / kilogram')>

See also

moist_air_gas_constant, moist_air_poisson_exponent

Notes

Adapted from

\[c_{pm} = (1 - q_v) c_{pa} + q_v c_{pv}\]

Eq 17, [Romps2017] using MetPy-defined constants in place of cited values.