CNES / RadiativeTransferCode-OSOAA

Ocean Successive Orders with Atmosphere - Advanced (OSOAA) : Accurate computation of the radiative tranfer into the Ocean-Atmosphere system including polarisation, coupling terms, and the agitated surface.
GNU General Public License v2.0
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Ocean Successive Orders with Atmosphere - Advanced (OSOAA V1.6 - 2019, January 11th )

Accurate computation of the radiative tranfer into the Ocean-Atmosphere system including polarisation, coupling terms, and the agitated surface.

Based on the successive orders of scattering method, the initial OSOA (Ocean Successive Orders with Atmosphere) code was the first version of a radiative transfer model for the computation of radiance and polarization in an ocean-atmosphere system, accounting for a flat surface.
The OSOA-Advanced code (so-called OSOAA) introduces the capability to simulate a more realistic air / sea interface by taking into account the roughness of the sea surface as modelled by Cox & Munk.
Note that OSOAA model allows the computation of the polarization state of light (it is a vector radiative transfer model).
This new code also offers a user friendly interface (GUI) and simplified command lines to perform a set of simulation.

OSOAA allows simulating:

OSOAA calculates the light transmission through the sea surface from air to sea and from sea to air. It calculates the upward reflection of the downwelling radiance field of the atmosphere on the surface and also the downward reflection of the upwelling radiance field below the surface.

The user can define specific angles for which output simulated radiance are required. OSOAA provides the radiance field for a given altitude in the atmosphere or depth in the ocean. It can also provide the radiance profile for a specified direction. It is also possible to get the complete radiance field (upward and downward radiance in term of intensity and polarized radiance throughout the atmospheric and marine profiles).

REFERENCE:
This OSOAA code can be referenced as :
Chami M, Lafrance B, Fougnie B, Chowdhary J, Harmel T, Waquet F (2015), "OSOAA: a vector radiative transfer model of coupled atmosphere-ocean system for a rough sea surface application to the estimates of the directional variations of the water leaving reflectance to better process multi-angular satellite sensors data over the ocean", Opt Express 23: 27829-27852, doi: 10.1364/OE.23.027829