本文针对气溶胶的辐射强迫效应开展了数值方法研究。建立了基于球谐函数法的多层半透明介质辐射计算模型。并与射线踪迹一节点分析法的计算结果进行了对比验证。最后，我们使用该模型分析了北京地区的大气气溶胶辐射强迫。结果显示，本文计算出的结果与AERONET的气溶胶光学厚度有很好的关联性。
A numerical method, used for radiation forcing of aerosols was developed in this paper. The radiation calculation model of multilayer semitransparent media was established based on the expansion of spherical harmonics method （PN-Approximation）. The calculated results were compared with those using the ray tracing method. Finally, we analyzed the radiative forcing of atmospheric aerosol in Beijing Area using this model. It showed that the results obtained from this paper had good correlation with atmospheric aerosol optical thickness in AERONET.
参考文献
| [1] | Yang J;Modest MF .Elliptic PDE formulation of general, three-dimensional high-order P-N-approximations for radiative transfer[J].Journal of Quantitative Spectroscopy & Radiative Transfer,2007(2):217-227. |
| [2] | Modest MF;Yang J .Elliptic PDE formulation and boundary conditions of the spherical harmonics method of arbitrary order for general three-dimensional geometries[J].Journal of Quantitative Spectroscopy & Radiative Transfer,2008(9):1641-1666. |
| [3] | McClarren, R.G.;Hauck, C.D. .Robust and accurate filtered spherical harmonics expansions for radiative transfer[J].Journal of Computational Physics,2010(16):5597-5614. |
| [4] | Atalay, MA .P-N solutions of radiative heat transfer in a slab with reflective boundaries[J].Journal of Quantitative Spectroscopy & Radiative Transfer,2006(1):100-108. |
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