====== About IPRT ====== 
    
The **International working group on Polarized Radiative Transfer** (IPRT)
has been initiated in June 2011. Its objectives include: 
  * compare and improve polarized radiative transfer models
  * provide benchmark results
  * develop publically available codes
  * provide information about free codes
  * provide input data (scattering matrices, BPDFs)
  * bring community together (workshops, ...)

=== News ===

A model intercomparison study for vector radiative transfer simulations in spherical geometry has been performed and is published along with the benchmark results:

[[https://amt.copernicus.org/articles/14/3953/2021/|D. Zawada, G. Franssens, R. Loughman, A. Mikkonen, A. Rozanov, C. Emde, A. Bourassa, S. Dueck, H. Lindqvist, D. Ramon, V. Rozanov, E. Dekemper, E. Kyrölä, J. P. Burrows, D. Fussen, and D. Degenstein. Systematic comparison of vectorial spherical radiative transfer models in limb scattering geometry. Atmos. Meas. Tech., 14(5):3953-3972, 2021.]] 

Benchmark results for coupled atmosphere-ocean systems have been produced by a Science Team for the upcoming Earth-observing NASA/PACE mission:

[[https://www.sciencedirect.com/science/article/abs/pii/S002240731930370X|
Jacek Chowdhary, Peng-Wang Zhai, Feng Xu, Robert Frouin, Didier Ramon,
Testbed results for scalar and vector radiative transfer computations of light in atmosphere-ocean systems, JQSRT, Volume 242, 2020]]

Phase B (3D test cases) of the model intercomparison has been published:
[[https://www.sciencedirect.com/science/article/pii/S0022407317308981|Emde et al. 2018, JQSRT]]. The benchmark results can be downloaded [[intercomparisons:intercomparisons|here]].