improver.psychrometric_calculations.temperature_saturated_air_parcel module#

module to calculate the temperature of a saturated air parcel that has ascended adiabatically from the cloud condensation level (CCL) to a pressure level.

class TemperatureSaturatedAirParcel(pressure_level=50000.0)[source]#

Bases: BasePlugin

Plugin to calculate the temperature of a saturated air parcel as it rises adiabatically from the cloud condensation level (CCL) to a pressure level. The default is set at 500 hPa for the Lifted Index (LI) calculations.

__init__(pressure_level=50000.0)[source]#

Set up class

Parameters:: pressure_level (float) – The pressure level that the air parcel is lifted to adiabatically from the cloud condensation level. (Pa)

_abc_impl = <_abc._abc_data object>#

make_saturated_relative_humidity_cube()[source]#

Creates a cube of relative humidity at the cloud condensation level (CCL) with a value of 1.0, as by definition the relative humidity is 100 percent at the CCL.

The temperature cube is used as a template for the metadata of the relative humidity cube. Only the name and units will be replaced.

Return type:: Cube
Returns:: A cube of relative humidity at the CCL with a value of 1.0.

make_temperature_cube(temp_after_saturated_ascent)[source]#

Puts the temperature information into a cube with appropriate metadata. Uses self.temperature as a template for the metadata of the temperature cube. Only the name and units will be replaced.

Parameters:: temp_after_saturated_ascent (ndarray) – An n dimensional array of the temperature after a saturated air parcel has been lifted adiabatically from the cloud condensation level (CCL) to a pressure level (K).
Return type:: Cube
Returns:: A cube of the temperature of a saturated air parcel when it has been lifted adiabatically from the CCL to another pressure level (K)

parcel_temp_after_ascent()[source]#

Calculates the temperature of a saturated air parcel when it has been lifted from the CCL to a pressure level. This has been set at 500 hPa for the easy calculation of Lifted Index (LI).

Return type:: array
Returns:: Array of temperature of an air parcel at a pressure level (K)

process(*cubes)[source]#

Calculates the temperature of a saturated air parcel that has risen adiabatically from the cloud condensation level to a pressure level.

Parameters:: cubes (Union[Cube, CubeList]) – Cubes of temperature (K), pressure (Pa) at the cloud condensation level.
Return type:: Cube
Returns:: Cube of parcel_temperature_after_saturated_ascent_from_ccl_to_pressure_level

improver.psychrometric_calculations.temperature_saturated_air_parcel module

Contents

improver.psychrometric_calculations.temperature_saturated_air_parcel module#