An improved pseudo spherical shell algorithm for vector radiative transfer

• An improved pseudo-spherical shell (IPSS) algorithm has been developed. The IPSS is highly accurate for the Earth atmosphere. This work will greatly improve remote sensing of environment in polar regions. radiative transfer solution a plane-parallel geometry good approximation many applications or other planetary systems as Earth’s radius quite large ( ∼ 6371 km). however problematic regions where solar zenith angle usually > 60 ∘ ) and spherical effect significant. One simple so-called (PSS) approximation, which treats beam attenuation exactly along nadir atmosphere while keeping plane parallel multiple scattering calculation. PSS improves intermediately angles, though error still viewing angles. In order to further treatment geometry, we have developed an pseudo approximation. method, used following techniques: I.) single solved atmosphere; II.) ratio using with our code based on successive method; III.) assumed be same both geometry. We tested performance two benchmark cases involving Rayleigh matrix. If optical thickness 0.25, smaller than 1% most directions < 70 ). 1.0, bounded within ± 2%. does not show obvious dependence angle. Our newly scheme can