The International working group on Polarized Radiative Transfer (IPRT) has been initiated in June 2011. Its objectives include:
A model intercomparison study for vector radiative transfer simulations in spherical geometry has been performed and is published along with the benchmark results:
Benchmark results for coupled atmosphere-ocean systems have been produced by a Science Team for the upcoming Earth-observing NASA/PACE mission:
Phase B (3D test cases) of the model intercomparison has been published: Emde et al. 2018, JQSRT. The benchmark results can be downloaded here.