pyrtlib.utils

This module contains the utils functions.

Functions

atmospheric_tickness(p, t[, mr])	Calculate the thickness of a layer via the hypsometric equation.
constants([name])	This routine will provide values and units for all the universal constants necessary to pyrtlib.
dewpoint2rh(td, t[, ice, method])	Calculate relative humidity from temperature and dewpoint.
dilec12(f, t)	Computes the complex dielectric constant for liquid water, with a negative imaginary part representing dissipation.
e2mr(p, e)	Compute \(H_2O\) mass mixing ratio (g/kg) given pressure (mbar) and \(H_2O\) partial pressure (mbar)
esice_goffgratch(t)	Compute water vapor saturation pressure over ice using Goff-Gratch formulation.
eswat_goffgratch(t)	Compute water vapor saturation pressure over water using Goff-Gratch formulation.
gas_mass(gasid)	Returns the mass of the HITRAN gas ID
get_frequencies([instrument])	Get frequencies list from main ground instrument.
get_frequencies_sat(instrument)	Get frequencies list from main satellite sensors.
height_to_pressure(height)	Convert height data to pressures using the U.S.
import_lineshape(name)	Import a named object from a module in the context of this function.
kgkg_to_kgm3(q, p, t)	Utils function to convert from \(kg/kg\) to \(kg/m^3\).
mr2e(p, mr)	Compute \(H_2O\) partial pressure (mbar) given pressure (mbar) and \(H_2O\) mass mixing ratio (g/kg)
mr2rh(p, t, w[, Tconvert])	Determine relative humidity (rh) given reference pressure (mbar), temperature (K), and water vapor mass mixing ratio (g/kg)
mr2rho(mr, t, p)	Determine water vapor density (\(g/m^3\)) given reference pressure (mbar), temperature (K), and water vapor mass mixing ratio (g/kg)
ppmv2gkg(ppmv, gasid)	Convert volume mixing ratio in ppmv to mass mixing ratio in g/kg.
ppmv_to_moleculesm3(mr, p, t)	For any gas, this function converts mixing ratio (in ppmv) to number density (\(molecules/m^3\)).
pressure_to_height(pressure)	Convert pressure data to height using the U.S.
rho2mr(rho, t, p)	Determine water vapor mass mixing ratio (g/kg) given reference pressure (mbar), temperature (t,K), and water vapor density (\(g/m^3\)).
rho2rh(rho, t, p)	Convert water vapor density to relative humidity.
satmix(p, t[, Tconvert])	Compute saturation mixing ratio (g/kg) given reference pressure, p (mbar]) and temperature, T (K).
satvap(t[, Tconvert])	Compute saturation vapor pressure (mbar) given temperature, T (K).
tk2b_mod(hvk, t)	Get modified Planck function (Planck function without the constants \(\frac{2h\nu^3}{c^2}\)) by T and hvk (Planck constant * frequency) / Boltzmann constant, (equation (4) from [Schroeder-Westwater-1991])
to_celsius(t)	Convert T from Kelvin to Celsius
to_kelvin(t)	Convert T from Celsius to Kelvin
virtual_temperature(t, mr)	Calculate virtual temperature.