propagate_fluxes

propagate_fluxes

frei.propagate_fluxes(lam, F_1_up, F_2_down, T_1, T_2, delta_tau, omega_0=0, g_0=0, eps=0.5)[source]

Compute fluxes up and down using the improved two-stream equations.

The transmission function is taken from Deitrick et al. (2020) Equation B2.

The two stream equations are taken from Malik et al. (2017) (see Equation 15), with corrections from Dietrick et al. (2022) (see Appendix B).

Parameters

  • lam (Quantity) – Wavelength grid

  • F_1_up (Quantity) – Flux up into layer 1

  • F_2_down (Quantity) – Flux down into layer 2

  • T_1 (Quantity) – Temperature in layer 1

  • T_2 (Quantity) – Temperature in layer 2

  • delta_tau (ndarray) – Change in optical depth

  • omega_0 (ndarray or float) – Single scattering albedo

  • g_0 (ndarray or float) – Scattering asymmetry factor

  • eps (float) – First Eddington coefficient (Heng et al. 2014)

Returns

F_2_up, F_1_down – Fluxes outgoing to layer 2, and incoming to layer 1

Return type

Quantity

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