非球形气溶胶粒子短波红外散射特性研究

范萌; 陈良富; 李莘莘; 陶金花; 苏林; 邹铭敏; 张莹; 韩冬

doi:10.7498/aps.61.204202

摘要

利用T矩阵方法,以及基于扩散限制凝聚理论的广义多粒子米散射方法,研究了多种气溶胶粒子在1.6和2.0 μm波段处,非球形单粒子和团簇粒子的光散射辐射特性,并分析了粒子有效半径、复折射指数、粒子形状、相对湿度等因素对非球形粒子散射特性的影响. 分析表明,除了粒子有效半径和形状会在不同程度上引起粒子散射特性变化, 相对湿度对其影响也比较大,球形粒子与非球形粒子在不同相对湿度下后向散射相对差异均在18%以上; 当粒子体积较小时,水溶性气溶胶的后向散射强度随相对湿度的增加而增强,而当粒子体积较大时, 则随相对湿度的增加而减弱;在体积相同的条件下,体积较小的团簇粒子的不对称因子比非球形单粒子平均偏大0.023,而体积较大的团簇粒子,却比非球形单粒子不对称因子平均偏小0.055; 单粒子或等体积的团簇粒子,其不同波段之间单次散射反照率差异较大,最大可达0.226. 该工作对研究气溶胶多次散射对CO2浓度卫星反演精度影响具有重要的科学意义.

关键词:

Abstract

Based on the T-matrix method and the generalized multiparticle Mie-solution (GMM) method combined with diffusion-limited aggregation simulator, the scattering properties of non-spherical particles and aggregates are simulated at 1.6 μm and 2.0 μm. And the effects of the equal-volume sphere radius, the complex refractive index, the particle shape and the relative humidity (RH) on the scattering characteristics parameters of non-spherical aerosol are analyzed. The results show that besides the equal-volume sphere radius and the particle shape, the RH could also lead to a large change of the scattering properties. And the relative differences in back scattering between spherical particles and non-spherical particles in different relative humidities are all larger than 18%. If the RH increases, the back scattering will increase for small-size particles, while the back scattering of large-size ones will decrease. The asymmetry factors of the smaller aggregates are 0.023 averagely greater than those of the single equal-volume non-spherical particles, which the asymmetry factors of the bigger aggregates are 0.055 averagely less than those of the single equal-volume non-spherical particles. The differences in single scattering albedo between the two wavelengths 1.6 μm and 2.0 μm are all much larger for either aggregates or single equal-volume particles, and the biggest difference reaches 0.226. This research has scientific significance for studying the aerosol multiple scattering influencing on the accuracy of CO2 satellite retrieval.

Keywords:

non-spherical particles /
scattering properties /
T-matrix method /
generalized multi-sphere Mie-solution method

作者及机构信息

1.
中国科学院遥感应用研究所,遥感科学国家重点实验室, 北京 100101;

2.
中国科学院研究生院, 北京 100049

基金项目: 国家自然科学基金重点项目(批准号: 41130528)资助的课题.

Authors and contacts

1.
State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Application, Chinese Academy of Sciences, Beijing 100101, China;

2.
Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Funds: Project supported by the Key Program of the National Natural Science Foundation of China (Grant No. 41130528).

参考文献

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[2]	Buchwitz M, Beek R, Burrows J P, Bovensmann H, Warneke T, Notholt J, Meirink J F, Goede A P H, Bergamaschi P, Körner S, Heimann M, Schulz A 2005 Atmos. Chem. Phys. 5 941
[3]	Aben I, Hasekamp O, Hartmann W 2007 J. Quant. Spectrosc. Radiat. Transfer. 104 450
[4]	Mayer B 2009 Eur. Phys. J. Conf. 1 75
[5]	Boesch H, Baker D, Connor B, Crisp D 2011 Remote Sens. 3 270
[6]	Natraj V, Boesch H, Spurr R J D, Yung Y L 2008 J. Geophys. Res. 113 D11212
[7]	Xie Q Y, Zhang Y M, Yuan H Y, Zhao J H, Qiao L F, Jiang Y L 2006 J. Univ. Sci. Technol. China 36 320 (in Chinese) [谢启源, 张永明, 袁宏永, 赵建华, 乔利锋, 蒋亚龙 2006 中国科学技术大学学报 36 320]
[8]	Tanré D, Deschamps P Y, Devaux C, Herman M 1998 J. Geophys. Res. 93 15955
[9]	Waterman P C 1999 J. Opt. Soc. Am. A 16 2968
[10]	Mishchenko M I, Travis L D, Mackowski D W 1996 J. Quant. Spectrosc. Radiat. Transfer 55 535
[11]	Draine B T, Flatau P J 1994 J. Opt. Soc. Am. A 11 1491
[12]	Yee K 1966 IEEE Trans. Antenn. Prop. 14 302
[13]	Xu Y, Gustafson B S 2001 J. Quant. Spectrosc. Radiat. Transfer. 70 395
[14]	Witten T, Sander L 1983 Phys. Rev. B 27 5686
[15]	Mishchenko M I, Travis L D 1998 J. Quant. Spectrosc. Radiat. Transfer. 60 309
[16]	Mishchenko M I, Travis L D, Mackowski D W 2010 J. Quant. Spectrosc. Radiat. Transfer. 111 1700
[17]	Mishchenko M I, Travis L D 1994 Opt. Commun. 109 16
[18]	Mishchenko M I 1991 J. Opt. Soc. Am. A 8 871
[19]	Mishchenko M I 1993 Appl. Opt. 32 4652
[20]	Hess M, Koepke P, Schult I 1998 Bull. Am. Met. Soc. 79 831
[21]	Rothman L S, Gordon I E, Barbe A, Benner D C, Bernath P F, Birk M, Boudon V, Brown L R, Campargue A, Champion J P, Chance K, Coudert L H, Dana V, Devi V M, Fally S, Flaud J M, Gamache R R, Goldman A, Jacquemart D, Kleiner I, Lacome N, Lafferty W J, Mandin J Y, Massie S T, Mikhailenko S.N, Miller C E, Moazzen-Ahmadi N, Naumenko O V, Nikitin A V, Orphal J, Perevalov V I, Perrin A, Predoi-Cross A, Rinsland C P, Rotger M, Šimečková M, Smith M A H, Sung K, Tashkun S A, Tennyson J, Toth R A, Vandaele A C, Vander Auwera J 2009 J. Quant. Spectrosc. Radiat. Transfer. 110 533

施引文献

[1]	Crevoisier C, Chédin A, Matsueda H, Machida T, Armante1 R, Scott N A 2009 Atmos. Chem. Phys. 9 4797
[2]	Buchwitz M, Beek R, Burrows J P, Bovensmann H, Warneke T, Notholt J, Meirink J F, Goede A P H, Bergamaschi P, Körner S, Heimann M, Schulz A 2005 Atmos. Chem. Phys. 5 941
[3]	Aben I, Hasekamp O, Hartmann W 2007 J. Quant. Spectrosc. Radiat. Transfer. 104 450
[4]	Mayer B 2009 Eur. Phys. J. Conf. 1 75
[5]	Boesch H, Baker D, Connor B, Crisp D 2011 Remote Sens. 3 270
[6]	Natraj V, Boesch H, Spurr R J D, Yung Y L 2008 J. Geophys. Res. 113 D11212
[7]	Xie Q Y, Zhang Y M, Yuan H Y, Zhao J H, Qiao L F, Jiang Y L 2006 J. Univ. Sci. Technol. China 36 320 (in Chinese) [谢启源, 张永明, 袁宏永, 赵建华, 乔利锋, 蒋亚龙 2006 中国科学技术大学学报 36 320]
[8]	Tanré D, Deschamps P Y, Devaux C, Herman M 1998 J. Geophys. Res. 93 15955
[9]	Waterman P C 1999 J. Opt. Soc. Am. A 16 2968
[10]	Mishchenko M I, Travis L D, Mackowski D W 1996 J. Quant. Spectrosc. Radiat. Transfer 55 535
[11]	Draine B T, Flatau P J 1994 J. Opt. Soc. Am. A 11 1491
[12]	Yee K 1966 IEEE Trans. Antenn. Prop. 14 302
[13]	Xu Y, Gustafson B S 2001 J. Quant. Spectrosc. Radiat. Transfer. 70 395
[14]	Witten T, Sander L 1983 Phys. Rev. B 27 5686
[15]	Mishchenko M I, Travis L D 1998 J. Quant. Spectrosc. Radiat. Transfer. 60 309
[16]	Mishchenko M I, Travis L D, Mackowski D W 2010 J. Quant. Spectrosc. Radiat. Transfer. 111 1700
[17]	Mishchenko M I, Travis L D 1994 Opt. Commun. 109 16
[18]	Mishchenko M I 1991 J. Opt. Soc. Am. A 8 871
[19]	Mishchenko M I 1993 Appl. Opt. 32 4652
[20]	Hess M, Koepke P, Schult I 1998 Bull. Am. Met. Soc. 79 831
[21]	Rothman L S, Gordon I E, Barbe A, Benner D C, Bernath P F, Birk M, Boudon V, Brown L R, Campargue A, Champion J P, Chance K, Coudert L H, Dana V, Devi V M, Fally S, Flaud J M, Gamache R R, Goldman A, Jacquemart D, Kleiner I, Lacome N, Lafferty W J, Mandin J Y, Massie S T, Mikhailenko S.N, Miller C E, Moazzen-Ahmadi N, Naumenko O V, Nikitin A V, Orphal J, Perevalov V I, Perrin A, Predoi-Cross A, Rinsland C P, Rotger M, Šimečková M, Smith M A H, Sung K, Tashkun S A, Tennyson J, Toth R A, Vandaele A C, Vander Auwera J 2009 J. Quant. Spectrosc. Radiat. Transfer. 110 533

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