earthkit.meteo.constants

Attributes

Lv	Latent heat of vapourisation [\(J kg^{-1}\)].
R	Universal gas constant [\(J K^{-1} mol^{-1}\)].
R_earth	Average radius of the Earth [\(m\)]. See [IFS-CY47R3-PhysicalProcesses]
Rd	Gas constant for dry air [\(J kg^{-1} K^{-1}\)].
Rv	Gas constant for water vapour [\(J kg^{-1} K^{-1}\)].
T0	Triple point of water [K].
T_C2K	Celsius-to-Kelvin conversion offset.
c_pd	Specific heat of dry air on constant pressure [\(J kg^{-1} K^{-1}\)].
c_pv	Specific heat of water vapour on constant pressure [\(J kg^{-1} K^{-1}\)].
degree	Factor for converting radians to degrees.
epsilon	Epsilon coefficient used in humidity formulas \(\epsilon = \frac{R_{d}}{R_{v}}\).
g	Gravitational acceleration on the surface of the Earth [\(m s^{-2}\)].
kappa	Kappa coefficient used in adiabatic equations \(\kappa = \frac{R_{d}}{C_{pd}}\).
omega	Rotation rate of the Earth [\(s^{-1}\)].
p0	Reference pressure used in potential temperature calculations [Pa].
radian	Factor for converting degrees to radians.
sideral_day	Length of the sideral day [\(s\)].
sideral_year	Length of the sideral year [\(s\)].
solar_day	Length of the solar day [\(s\)].

Package Contents

earthkit.meteo.constants.Lv = 2500800.0

Latent heat of vapourisation [\(J kg^{-1}\)].

earthkit.meteo.constants.R = 8.31451

Universal gas constant [\(J K^{-1} mol^{-1}\)]. See [IFS-CY47R3-PhysicalProcesses] (Chapter 12).

earthkit.meteo.constants.R_earth = 6371229

Average radius of the Earth [\(m\)]. See [IFS-CY47R3-PhysicalProcesses] (Chapter 12).

earthkit.meteo.constants.Rd = 287.0597

Gas constant for dry air [\(J kg^{-1} K^{-1}\)]. See [IFS-CY47R3-PhysicalProcesses] (Chapter 12).

earthkit.meteo.constants.Rv = 461.51

Gas constant for water vapour [\(J kg^{-1} K^{-1}\)]. See [IFS-CY47R3-PhysicalProcesses] (Chapter 12).

earthkit.meteo.constants.T0 = 273.16

Triple point of water [K].

earthkit.meteo.constants.T_C2K = 273.15

Celsius-to-Kelvin conversion offset.

earthkit.meteo.constants.c_pd = 1004.79

Specific heat of dry air on constant pressure [\(J kg^{-1} K^{-1}\)]. See [IFS-CY47R3-PhysicalProcesses] (Chapter 12).

earthkit.meteo.constants.c_pv = 1846.1

Specific heat of water vapour on constant pressure [\(J kg^{-1} K^{-1}\)]. See [IFS-CY47R3-PhysicalProcesses] (Chapter 12).

earthkit.meteo.constants.degree

Factor for converting radians to degrees.

earthkit.meteo.constants.epsilon = 0.621981

Epsilon coefficient used in humidity formulas \(\epsilon = \frac{R_{d}}{R_{v}}\).

earthkit.meteo.constants.g = 9.80665

Gravitational acceleration on the surface of the Earth [\(m s^{-2}\)]. See [IFS-CY47R3-PhysicalProcesses] (Chapter 12).

earthkit.meteo.constants.kappa = 0.285691

Kappa coefficient used in adiabatic equations \(\kappa = \frac{R_{d}}{C_{pd}}\).

earthkit.meteo.constants.omega

Rotation rate of the Earth [\(s^{-1}\)]. Defined as \(\frac{2\pi}{sideral\_day}\).

earthkit.meteo.constants.p0 = 100000.0

Reference pressure used in potential temperature calculations [Pa].

earthkit.meteo.constants.radian

Factor for converting degrees to radians.

earthkit.meteo.constants.sideral_day

Length of the sideral day [\(s\)]. Defined as \(\frac{solar\_day}{1 + \frac{solar\_day}{sideral\_year}}\).

earthkit.meteo.constants.sideral_year

Length of the sideral year [\(s\)]. Defined as \(\frac{2\pi\times 365.25\times solar\_day}{6.283076}\).

earthkit.meteo.constants.solar_day = 86400

Length of the solar day [\(s\)].