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If particles are mixed with other type of particles, the light scattering characteristics will be changed. In this paper, the light scattering characteristics of water clouds mixed with black carbon are studied. Based on the Mie theory, the single scattering phase function, the single scattering albedo and the asymmetric parameters of water clouds and black carbon aerosols are computed. The Monte Carlo method for simulating the scattering of mixed particles is given, the methods of sampling particle types, sampling free path length, and the sampling scattering directions based on the Mie phase function are given. The changes of the scattering characteristics for water clouds mixed with black carbon aerosols are studied. Reflected light intensity varying with observation angle is calculated with the light normal incidence, and the plane albedo is computed as a function of incidence angle. The influences of mixing ratio and effective radius of black carbon on the scattering characteristic of mixture are discussed. The results show that the black carbon can greatly increase the absorption of the clouds, and the ratio and the size of black aerosols can greatly affect the scattering characteristics of the mixture.
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Keywords:
- scattering /
- mixed particles /
- Monte-Carlo method，clouds /
[1] Han Y, Wang T J, Rao R Zh, Wang Y J 2008 Acta Phys. Sin. 57 7396 (in Chinese) [韩永, 王体健, 饶瑞中, 王英俭 2008 57 7396]
[2] Sun X M, Han Y P 2006 Acta Phys. Sin. 55 682 (in Chinese) [孙贤明, 韩一平 2006 55 682]
[3] Videen G, Ngo D, Chylek P 1994 Opt. Lett. 19 1675
[4] Liu L, Mishchenko M I, Surabi Menona, Andreas Macke, Andrew A 2002 J. Quant. Spectrosc. Radiat. Transfer. 74 195
[5] Macke A, Mishchenko M I, Cairns B 1996 J. Geophys. Res. 101 23311
[6] Sun X M, Wang H H, Liu W Q, Shen J 2009 Chin. Phys. B 18 1040
[7] Mishchenko M I, Liu L, Travis L D, Lacis A A 2004 J. Quant. Spectrosc. Radiat. Transfer 88 139
[8] Stamnes K, Tsay S C, Wiscombe W 1988 Applied Optics 27 2502
[9] Van de Hulst H C 1980 Multiple lights scattering: Tables, Formulas and Application (New York: Academic Press) p150-200
[10] Xu H B, Peng X K, Chen Ch B 2010 Chin. Phys. B 19 062901
[11] Hansen J E, Travis L D 1974 Space Science Reviews 16 527
[12] Mishchenko M I, Travis L D, Lacis A A 2002 Scattering, absorption, and emission of light by small particles (Cambridge: Cambridge University Press) p256
[13] Sun X M, Han Y P, Shi X W, 2007 Acta Phys. Sin. 56 2098 (in Chinese) [孙贤明, 韩一平, 史小卫 2007 56 2098]
[14] Dominique T 1996 Appl. Opt. 35 3270
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[1] Han Y, Wang T J, Rao R Zh, Wang Y J 2008 Acta Phys. Sin. 57 7396 (in Chinese) [韩永, 王体健, 饶瑞中, 王英俭 2008 57 7396]
[2] Sun X M, Han Y P 2006 Acta Phys. Sin. 55 682 (in Chinese) [孙贤明, 韩一平 2006 55 682]
[3] Videen G, Ngo D, Chylek P 1994 Opt. Lett. 19 1675
[4] Liu L, Mishchenko M I, Surabi Menona, Andreas Macke, Andrew A 2002 J. Quant. Spectrosc. Radiat. Transfer. 74 195
[5] Macke A, Mishchenko M I, Cairns B 1996 J. Geophys. Res. 101 23311
[6] Sun X M, Wang H H, Liu W Q, Shen J 2009 Chin. Phys. B 18 1040
[7] Mishchenko M I, Liu L, Travis L D, Lacis A A 2004 J. Quant. Spectrosc. Radiat. Transfer 88 139
[8] Stamnes K, Tsay S C, Wiscombe W 1988 Applied Optics 27 2502
[9] Van de Hulst H C 1980 Multiple lights scattering: Tables, Formulas and Application (New York: Academic Press) p150-200
[10] Xu H B, Peng X K, Chen Ch B 2010 Chin. Phys. B 19 062901
[11] Hansen J E, Travis L D 1974 Space Science Reviews 16 527
[12] Mishchenko M I, Travis L D, Lacis A A 2002 Scattering, absorption, and emission of light by small particles (Cambridge: Cambridge University Press) p256
[13] Sun X M, Han Y P, Shi X W, 2007 Acta Phys. Sin. 56 2098 (in Chinese) [孙贤明, 韩一平, 史小卫 2007 56 2098]
[14] Dominique T 1996 Appl. Opt. 35 3270
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