The integro-differential formulation of the RTE and its solution by iterations on the source has been extended here to handle anisotropic scattering. The iterative part of the method is O(N ln N ), thanks to an efficient use of H-matrices. The precision is good enough to evaluate the effect of sensitive parameters for the study of contrails. Most of the time the stratified 1D approximation should suffice, but in complex cases with high relief the 3D formulation is needed.

翻译：辐射传输方程的积分-微分形式及其基于源迭代的求解方法已在此扩展至处理各向异性散射。由于高效利用了H矩阵，该方法的迭代部分复杂度为O(N ln N)，其精度足以评估对飞行迹研究中敏感参数的影响。在多数情况下，分层一维近似已足够，但在具有高地形起伏的复杂场景中，需采用三维公式。