Radiation¶

The radiation module contains data structures for holding the radiation variables used in DISORT.

class pyrt.radiation.IncidentFlux(beam_flux=3.141592653589793, isotropic_flux=0.0)[source]¶

A data structure for holding the incident fluxes.

IncidentFlux creates scalars for the incident beam and isotropic fluxes and performs checks that the input fluxes are valid inputs to DISORT.

Parameters

beam_flux (float) – The intensity of the incident beam at the top boundary. Ensure this variable and isotropic_flux have the same units. Note that this is an infinitely wide beam.
isotropic_flux (float) – The intensity of the incident beam at the top boundary. Ensure this variable and beam_flux have the same units.

Raises

TypeError – Raised if either input flux cannot be cast into a float.

Return type

None

Notes

If thermal_emission is set to True, this is assumed to have the same units as PLKAVG (which defaults to [\(\frac{\text{W}}{\text{m}^2}\)]) and the corresponding incident flux is umu0 * beam_flux and pi * isotropic_flux. If thermal_emission is set to False, beam_flux and isotropic_flux have arbitrary units, and the output fluxes and intensities are assumed to have the same units as these variables.

property beam_flux: float¶

Get the input flux of the incident beam at the top boundary.

Notes

In DISORT, this variable is named FBEAM.

property isotropic_flux: float¶

Get the input flux of isotropic sources at the top boundary.

Notes

In DISORT, this variable is named FISOT.

class pyrt.radiation.ThermalEmission(thermal_emission=False, bottom_temperature=0.0, top_temperature=0.0, top_emissivity=1.0)[source]¶

A data structure for holding thermal emission variables.

ThermalEmission creates variables needs to include thermal emission in DISORT.

Parameters

thermal_emission (bool) –
Denote whether to use thermal emission. If True, DISORT will include thermal emission and will need the following variables:
- bottom_temperature
- top_temperature
- top_emissivity
- low_wavenumber (aka WVNMLO)
- high_wavenumber (aka WVNMHI)
- temperature (aka TEMPER)
If False, DISORT will save computation time by ignoring all thermal emission and all of the aforementioned variables.
bottom_temperature (float) – The temperature of the bottom boundary [K].
top_temperature (float) – The temperature of the top boundary [K].
top_emissivity (float) – The emissivity of the top boundary.

Raises

TypeError – Raised if bottom_temperature, top_temperature, or top_emissivity cannot be cast to a float.
ValueError – Raised if bottom_temperature or top_temperature is negative, or if top_emissivity is not between 0 and 1.

Return type

None