可见光波段非球形沙尘气溶胶散射和 辐射特性的理论模拟

冯倩; 邹斌; 赵崴

doi:doi:10.3969/j.issn.1673-6141.2015.01.001

大气与环境光学学报, 2015, 10 (1): 1, 网络出版: 2015-01-27

可见光波段非球形沙尘气溶胶散射和辐射特性的理论模拟

Theoretical Simulation of Scattering and Radiative Properties of Nonspherical Dust Aerosols at Visible Wavelength

论文大纲

冯倩 ^*邹斌赵崴

作者单位

国家卫星海洋应用中心, 北京 100081

沙尘气溶胶非球形几何光学单散射 dust aerosols nonspherical geometric optics single scattering

摘要

将非球形沙尘气溶胶视为具有一定尺度谱和形状分布的随机取向椭球粒子群,利用T矩阵和改进几何光学方法模拟了非球形沙尘气溶胶粒子在可见光波段(0.47 μm)的散射特性,并与实验室测量结果和等体积球形粒子的计算结果进行了比较。结果表明：利用具有一定尺度谱和形状分布的随机取向椭球粒子模拟自然界中的非球形沙尘粒子散射特性是行之有效的;用等体积球形粒子得到的单散射相矩阵(特别是单散射相函数)与椭球粒子相比,具有明显的差异,而粒子形状对单散射反照率、不对称因子和消光效率的影响明显偏小。通过比较椭球和球形沙尘气溶胶在可见光波段的辐射特性说明在计算非球形沙尘气溶胶辐射特性过程中应考虑粒子形状对其单散射特性的影响。

Abstract

With the assumption that nonspherical mineral dust aerosols are considered to be a mixture of randomly oriented spheroidal particles with particle size and shape distributions, the scattering properties of nonspherical mineral dust aerosols at visible wavelength (0.47 μm) are theoretically simulated based on the T-matrix method and improved geometric optics method (IGOM). The corresponding results related to laboratory measurements and equal volume spherical particles are also presented for comparison. The results indicate that it is feasible to simulate the scattering properties of nonspherical dust aerosols by considering dust particles to be a mixture of randomly oriented spheroidal particles with particle size and shape distributions, and the differences between equal volume spherical particles and spheroidal particles are obvious for single scattering phase matrix (especially single scattering phase function) when compared with the differences associated with single-scattering albedo, asymmetry factor and extinction efficiency. Moreover, by comparing the radiative properties of dust aerosols at the visible wavelength for spheroid and sphere particle shape assumption, it is found that the effect of particle shape on the single scattering properties cannot be neglected in simulating the radiative properties of nonspherical dust aerosols.

参考文献

[1] Haywood J, Bougher O. Estimates of the direct and indirect radiative forcing due to tropospheric aerosols: a review [J].Rev. Geophys., 2000, 38: 513-543.

[2] Sokolik I N, Winker D, Bergametti G,et al. Introduction to special section on mineral dust: outstanding problems in quantifying the radiative impact of mineral dust [J]. J. Geophys. Res., 2001, 106: 18015-18027.

[3] Martonchik J V, Diner D J. Retrieval of aerosol optical properties from multi-angle satellite imagery [J].IEEE Trans. Geosci. Remote Sens., 1992, 30: 223-230.

[4] King M D, Kaufman Y J, Menzel W P,et al. Remote sensing of cloud, aerosol, and water vapor properties from the moderate resolution imaging spectrometer (MODIS) [J]. IEEE Trans. Geosci. Remote Sens., 1992, 30: 1-27.

[5] Deuze J L, Herman M, Goloub P,et al. Characterization of aerosols over ocean from POLDER/ADEOS-1 [J]. Geophys. Res. Lett., 1999, 26: 1421-1424.

[6] Wang M, Gordon H R. Estimating aerosol optical properties over the oceans with the multiangle imaging spectroradiometers: some preliminary result [J].Appl. Opt., 1994, 33: 4042-4057.

[7] 王浩然,陈文忠. 中国东部海洋大气气溶胶光学性质及其气溶胶模型分析[J]. 大气与环境光学学报,2013, 8: 179-186.

Wang Haoran, Chen Wenzhong. Aerosol optical properties and modeling study in East China Seas [J].Journal of Atmospheric and Environmental Optics, 2013, 8: 179-186(in Chinese).

[8] 韩永翔,奚晓霞,方小敏,等. 亚洲大陆沙尘过程与北太平洋地区生物环境效应：以2001年4月中旬中亚特大沙尘暴为例[J]. 科学通报,2005, 50: 2649-2655.

Han Yongxiang, Xi Xiaoxia, Fang Xiaomin,et al. Dust storm in Asia continent and bio-environment effects in the North Pacific: a case study of the strongest dust event in April 2001 in central Asia [J]. Chinese Science Bulletin, 2005, 50: 2649-2655(in Chinese).

[9] Koren I, Ganor E, Joseph J H. On the relation between size and shape of desert dust aerosol [J].J. Geophys. Res., 2001, 106: 18047-18054.

[10] Okada K, Heintzenberg J, Kai K,et al. Shape of atmospheric mineral particles collected in three Chinese arid-regions [J]. Geophys. Res. Lett., 2001, 28: 3123-3126.

[11] West R A, Doose L R, Eibl A M,et al. Laboratory measurements of mineral dust scattering phase function and linear polarization [J]. J. Geophys. Res., 1997, 102: 16871-16881.

[12] Curtis D B, Meland B, Aycibin M,et al. A laboratory investigation of light scattering from representative components of mineral dust aerosols at a wavelength of 550 nm [J]. J. Geophys. Res., 2008, 113, doi:10.1029/2007JD009387

[13] Kalashnikova O V, Kahn R, Sokolik I N,et al. Ability of multiangle remote sensing observations to identify and distinguish mineral dust types: Optical models and retrievals of optically thick plumes [J]. J. Geophys. Res., 2005, 110, doi:10.1029/2004JD004550.

[14] Mishchenko M I, Travis L D. T-matrix computations of light scattering by large spheroidal particles [J].Opt. Commun., 1994, 109: 16-21.

[15] Yang P, Feng Q, Hong G,et al. Modeling the scattering and radiative properties of nonshpherical dust-like aerosols [J]. J. Aerosol Sci., 2007, 38: 995-1014.

[16] 孙贤明, 王海华, 刘万强, 等. 沙尘暴粒子的非球形模型及其对激光的多次散射特性研究[J]. 光学学报, 2010, 30(5): 1506-1510.

Sun Xianming, Wang Haihua, Liu Wanqiang,et al. Nonspherical model for sand dust storm and its application to the research of light multiple scattering [J]. Acta optica Sinica, 2010, 30(5), 1506-1510(in Chinese).

[17] 卫晓东,张华. 非球形沙尘气溶胶光学特性的分析[J]. 光学学报, 2011, 31(5): 0501002.

Wei Xiaodong, Zhang Hua. Analysis of optical properties of nonspherical dust aerosols [J].Acta optica Sinica, 2011, 31(5): 0501002(in Chinese).

[18] Dubovik O, Sinyuk A, Lapyonok T,et al. Application of spheroid models to account for aerosol particle nonsphericity in remote sensing of desert dust [J]. J. Geophys. Res., 2006, 111, doi: 10.1029/ 2005JD006619.

[19] Volten H, Muoz O, Rol E,et al. Scattering matrices of mineral aerosol particles at 441.6 and 632.8 nm [J]. J. Geophys. Res., 2001, 106: 17375-17401.

[20] De Haan J F, Bosma P B, Hovenier J W. The adding method for multiple scattering calculations of polarized light [J].Astron. Astrophys., 1987, 183: 371-391.

[21] Bi L, Yang P, Kattawar G W,et al. Modeling optical properties of mineral aerosol particles by using non-symmetric hexehedra [J]. Appl. Opt., 2010, 49: 334-342.

冯倩, 邹斌, 赵崴. 可见光波段非球形沙尘气溶胶散射和辐射特性的理论模拟[J]. 大气与环境光学学报, 2015, 10(1): 1. FENG Qian, ZOU Bin, ZHAO Wei. Theoretical Simulation of Scattering and Radiative Properties of Nonspherical Dust Aerosols at Visible Wavelength[J]. Journal of Atmospheric and Environmental Optics, 2015, 10(1): 1.

可见光波段非球形沙尘气溶胶散射和辐射特性的理论模拟

关于本站 Cookie 的使用提示

全站搜索

可见光波段非球形沙尘气溶胶散射和 辐射特性的理论模拟

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索

可见光波段非球形沙尘气溶胶散射和辐射特性的理论模拟