exo_k.atm_evolution.condensation_gcm

@author: jeremy leconte

Module Contents

class exo_k.atm_evolution.condensation_gcm.Condensing_species(Latent_heat_vaporization=0.0, cp_vap=0.0, Mvap=0.0, T_ref=0.0, Psat_ref=0.0, cp_cond=None)[source]

Bases: object

Parameters:

Latent_heat_vaporization (float) – specific Latent heat vaporization (J/kg)
cp_vap (float) – Specific heat capacity of the vapor (J/kg/K)
Mvap (float) – Molar mass of vapor (kg/mol)
T_ref (float) – Reference temperature
Psat_ref (float) – Saturation vapor pressure at the reference temperature (Pa)
cp_cond (float (optional)) – Specific heat capacity of the condensate (J/kg/K). Assumed equal to cp_vap if not provided.

Latent_heat_vaporization

cp_vap

T_ref

Psat_ref

Mvap

Rvap

delta_cp

delta_cp_R

LovR

c1

c2

Lvap(T)[source]

Latent heat at temperature T

Parameters:: T (array) – Temperature in layers (K)

Psat(T)[source]

Saturation vapor pressure for the condensing species

Parameters:: T (array) – Temperature in layers (K)

Tsat(P)[source]

Boiling temperature for the condensing species

NOT EXACT IF DELTA CP != 0.

Parameters:: P (array) – Pressure in layers (Pa)

qsat(psat, p, epsilon)[source]

Saturation vapor mass mixing ratio for the condensing species

Parameters:

psat (array) – saturation vapor pressure
p (array) – pressure at the layer center
epsilon (float or array) – Ratio of the molar mass of the vapor over the background molar mass

dPsat_dT(T)[source]

Saturation vapor pressure derivative for the condensing species

Parameters:: T (array) – Temperature in layers (K)

dlnPsat_dlnT(T)[source]

Saturation vapor pressure for the condensing species and its derivative

Parameters:: T (array) – Temperature in layers (K)

moist_adiabat(T, P, cp, Mgas)[source]

Computes the threshold thermal gradient (d ln T / d ln P) for a moist atmosphere.

Parameters:

T (array) – Temperature in layers (K)
P (array) – pressure at the layer center
cp (float) – specific heat capacity at constant pressure of the background gas
Mgas (float or array) – Molar mass of the background atmosphere

Returns:

array: Moist adiabat lapse rate
Lvap: array: Latent heat at temperature T
psat: array: Saturation vapor pressure for the condensing species (Pa)
qsat: array: Saturation vapor mass mixing ratio for the condensing species
dqsat_dt: array: Derivative of qsat with respect to temperature at fixed pressure
q_crit: array: Critical mass mixing ratio for the inhibition of moist convection (Eq. 17 of Leconte et al. 2017)

compute_condensation_parameters(T, P, Mgas)[source]

Computes necessary quantities to compute large scale condensation.

Parameters:

T (array) – Temperature in layers (K)
P (array) – pressure at the layer center
Mgas (float or array) – Molar mass of the background atmosphere

class exo_k.atm_evolution.condensation_gcm.Condensation_Thermodynamical_Parameters(Latent_heat_vaporization=0.0, cp_vap=0.0, Mvap=0.0, T_ref=0.0, Psat_ref=0.0, cp_cond=None)[source]

Bases: object

Parameters:

Latent_heat_vaporization (float) – specific Latent heat vaporization (J/kg)
cp_vap (float) – Specific heat capacity of the vapor (J/kg/K)
Mvap (float) – Molar mass of vapor (kg/mol)
T_ref (float) – Reference temperature
Psat_ref (float) – Saturation vapor pressure at the reference temperature (Pa)
cp_cond (float (optional)) – Specific heat capacity of the condensate (J/kg/K). Assumed equal to cp_vap if not provided.

Rvap

delta_cp

delta_cp_R

LovR

c1

c2

th_params

exo_k.atm_evolution.condensation_gcm.Lvap_T(T, Latent_heat_vaporization, T_ref, delta_cp)[source]

Latent heat at temperature T

Parameters:: T (array) – Temperature in layers (K)

exo_k.atm_evolution.condensation_gcm.Psat_T(T, T_ref, Psat_ref, c1, c2, delta_cp_R)[source]: GCM version for test

exo_k.atm_evolution.condensation_gcm.Tsat_P(P, Psat_ref, c1, c2)[source]: GCM version for test

exo_k.atm_evolution.condensation_gcm.Qsat(psat, p, epsilon)[source]

Saturation vapor mass mixing ratio for the condensing species

Parameters:

psat (array) – saturation vapor pressure
p (array) – pressure at the layer center
epsilon (float or array) – Ratio of the molar mass of the vapor over the background molar mass

exo_k.atm_evolution.condensation_gcm.dPsat_dT(T, Latent_heat_vaporization, T_ref, Psat_ref, Rvap, delta_cp, delta_cp_R, c1, c2)[source]

Saturation vapor pressure derivative for the condensing species

Parameters:: T (array) – Temperature in layers (K)

exo_k.atm_evolution.condensation_gcm.dlnPsat_dlnT(T, Latent_heat_vaporization, T_ref, delta_cp, Rvap)[source]

Saturation vapor pressure for the condensing species and its derivative

Parameters:: T (array) – Temperature in layers (K)

exo_k.atm_evolution.condensation_gcm.moist_adiabat(T, P, cp, Mgas, cp_vap, Mvap, Rvap, Latent_heat_vaporization, T_ref, Psat_ref, delta_cp, delta_cp_R, c1, c2)[source]

Computes the threshold thermal gradient (d ln T / d ln P) for a moist atmosphere.

Parameters:

T (array) – Temperature in layers (K)
P (array) – pressure at the layer center
cp (float) – specific heat capacity at constant pressure of the background gas
Mgas (float or array) – Molar mass of the background atmosphere

Returns:

array: Moist adiabat lapse rate
Lvap: array: Latent heat at temperature T
psat: array: Saturation vapor pressure for the condensing species (Pa)
qsat: array: Saturation vapor mass mixing ratio for the condensing species
dqsat_dt: array: Derivative of qsat with respect to temperature at fixed pressure
q_crit: array: Critical mass mixing ratio for the inhibition of moist convection (Eq. 17 of Leconte et al. 2017)

exo_k.atm_evolution.condensation_gcm.compute_condensation_parameters(T, P, Mgas, Mvap, Rvap, Latent_heat_vaporization, T_ref, Psat_ref, delta_cp, delta_cp_R, c1, c2)[source]

Computes necessary quantities to compute large scale condensation.

Parameters:

T (array) – Temperature in layers (K)
P (array) – pressure at the layer center
Mgas (float or array) – Molar mass of the background atmosphere