|
|
两种按比例混合颗粒系的多次散射模拟 |
王海华, 孙贤明 |
山东理工大学电气与电子工程学院, 淄博 255049 |
Multiple scattering of light by mixtures of two different aerosol types |
Wang Hai-Hua, Sun Xian-Ming |
School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255049, China |
|
摘要: 一种颗粒与其他种类的颗粒混合后, 会使其散射特性发生变化, 本文研究了水云中混有黑炭气溶胶后的散射特性变化. 根据Mie理论计算了水云和黑炭气溶胶散射相函数、单次散射反照率和不对称因子. 给出了混合颗粒系的蒙特卡罗模拟方法, 给出了颗粒碰撞类型抽样、自由程抽样和根据Mie相函数进行散射方向抽样的方法. 计算了光垂直入射时, 水云和黑炭气溶胶混合颗粒系的反射光强随观测角的变化, 并计算了平面反照率随入射角的变化, 讨论了黑炭气溶胶的有效半径、混合比例对整个混合颗粒系散射特性的影响. 计算结果表明, 水云中混合黑炭会加强其吸收, 且黑炭的比例和尺寸不同其散射特性差异较大.
关键词:
散射
混合颗粒
蒙特卡罗方法
云
|
|
Abstract: 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.
Keywords:
scattering
mixed particles
Monte-Carlo method
clouds
|
收稿日期: 2011-08-25
|
PACS: |
42.25.Fx
|
(Diffraction and scattering)
|
|
42.25.Bs
|
(Wave propagation, transmission and absorption)
|
|
基金: 山东省自然科学基金(批准号: ZR2009AQ013)资助的课题. |
References
[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 物理学报 57 7396]
|
[2] | Sun X M, Han Y P 2006 Acta Phys. Sin. 55 682 (in Chinese) [孙贤明, 韩一平 2006 物理学报 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 物理学报 56 2098]
|
[14] | Dominique T 1996 Appl. Opt. 35 3270
|
[1]
|
刘曼. 高斯型弱散射屏产生的像面散斑场的分布特性研究[J]. 物理学报, 2013, 62(9): 094204.
|
[2]
|
余荣, 江月松, 余兰, 欧军. 利用散射光增强弱吸收固体混合物中主要光吸收物质的光声光谱特征[J]. 物理学报, 2013, 62(8): 087802.
|
[3]
|
王飞, 魏兵. 任意磁化方向铁氧体电磁散射时域有限差分分析的Z变换方法[J]. 物理学报, 2013, 62(8): 084106.
|
[4]
|
杨文晋, 李永东, 刘纯亮. 高入射能量下的金属二次电子发射模型[J]. 物理学报, 2013, 62(8): 087901.
|
[5]
|
曲冠男, 李硕, 孙美娇, 徐胜楠, 刘煜, 孙成林, 门志伟, 里佐威. 温度对β胡萝卜素结构有序的影响[J]. 物理学报, 2013, 62(7): 077801.
|
[6]
|
杨欢欢, 曹祥玉, 高军, 刘涛, 马嘉俊, 姚旭, 李文强. 基于超材料吸波体的低雷达散射截面微带天线设计[J]. 物理学报, 2013, 62(6): 064103.
|
[7]
|
梁善勇, 王江安, 宗思光, 吴荣华, 马治国, 王晓宇, 王乐东. 基于多重散射强度和偏振特征的舰船尾流气泡激光探测方法[J]. 物理学报, 2013, 62(6): 060704.
|
[8]
|
吴涛, 金义富, 侯睿, 杨俊杰. 不确定性边缘表示与提取的认知物理学方法[J]. 物理学报, 2013, 62(6): 064201.
|
[9]
|
张宇, 张晓娟, 方广有. 大尺度分层介质电特性参数的反演方法研究[J]. 物理学报, 2013, 62(4): 044204.
|
[10]
|
王飞, 魏兵. 电各向异性色散介质电磁散射时域有限差分分析的半解析递推卷积方法[J]. 物理学报, 2013, 62(4): 044101.
|
[11]
|
潘惠平, 成枫锋, 李琳, 洪瑞华, 姚淑德. 蓝宝石衬底上生长的Ga2+xO3-x薄膜的结构分析[J]. 物理学报, 2013, 62(4): 048801.
|
[12]
|
孙悟, 邓小玖, 李耀东, 张永明, 郑赛晶, 王维妙. 双波长抗干扰光电感烟探测机理[J]. 物理学报, 2013, 62(3): 030201.
|
[13]
|
吴咏玲, 刘天元, 孙成林, 曲冠男, 里佐威. 分子极性对类胡萝卜素共振拉曼光谱的影响[J]. 物理学报, 2013, 62(3): 037801.
|
[14]
|
鲁磊, 屈绍波, 马华, 夏颂, 徐卓, 王甲富, 余斐. 宽带雷达散射截面减缩人工磁导体复合结构[J]. 物理学报, 2013, 62(3): 034206.
|
[15]
|
刁志辉, 黄文彬, 邓舒鹏, 刘永刚, 彭增辉, 姚丽双, 宣丽. 基于低散射和高增益全息液晶/聚合物光栅的分布反馈式激光器[J]. 物理学报, 2013, 62(3): 034202.
|
|
|
|