| 沙尘暴影响下北京沙尘气溶胶的垂直分布及溯源分析 |
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| 引用本文： | 邓梅,张佳华,蒋跃林.沙尘暴影响下北京沙尘气溶胶的垂直分布及溯源分析[J].气象科学,2015,35(5):550-557. |
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| 作者姓名： | 邓梅 张佳华 蒋跃林 |
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| 作者单位： | 安徽农业大学资源与环境学院, 合肥 230036;中国科学院遥感与数字地球研究所, 北京 100094,中国科学院遥感与数字地球研究所, 北京 100094,安徽农业大学资源与环境学院, 合肥 230036 |
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| 基金项目： | 中国科学院135创新团队培育(Y3ZZ15101A);中国科学院对地观测与数字地球科学中心主任科学基金(Y2ZZ26101B);中国科学院百人计划项目(Y1ZZ12101A);中国科学院院地合作项目(Y4201101A);中国科学院与发展中国家科学院SDIM卓越中心项目(Y3Y12701KB) |
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| 摘 要： | 采用云-大气气溶胶激光雷达红外探索卫星观测系统(Cloud-Aerosol Lidarand Infrared Pathfinder Satellite Observations,CALIPSO)资料,得出了2013年3月8-11日的一次途经新疆、甘肃、内蒙古等地的沙尘暴,对造成北京的沙尘天气影响下的沙尘气溶胶的空间垂直分布图。在此基础上研究了衰减后向散射系数、退偏振比、色比等光学特性参数。结果表明:在此次沙尘暴影响下造成的北京地区沙尘天气过程中,气溶胶的退偏振比在0.1~0.4之间,色比大于0.3。3月10-11日北京地区的沙尘气溶胶分布高度从3km以下被抬升至约4km。再利用欧拉-拉格朗日混合单粒子轨道模型(Hybrid Single Particle Lagrangian Integrated Trajectory Model)和NAAPS全球气溶胶模式,模拟分析了这次沙尘的来源和传输过程,表明此次沙尘起源于南疆盆地和内蒙古中西部,影响甘肃大部、内蒙古中西部、宁夏、山西北部和河北西北部、北京等地区。并用双波长迭代反演法初步反演了3月10、11日北京地区处于沙尘天气情况下的气溶胶光学厚度,分别为0.334和0.621。
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| 关 键 词： | 沙尘暴 CALIPSO 沙尘气溶胶 衰减后向散射系数 退偏振比 色比 |
| 收稿时间： | 2014/2/27 0:00:00 |
| 修稿时间： | 2014/5/27 0:00:00 |
Vertical distribution and source analysis of dust aerosol in Beijing under the influence of a dust storm |
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| DENG Mei,ZHANG Jiahua and JIANG Yuelin.Vertical distribution and source analysis of dust aerosol in Beijing under the influence of a dust storm[J].Scientia Meteorologica Sinica,2015,35(5):550-557. |
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| Authors: | DENG Mei ZHANG Jiahua and JIANG Yuelin |
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| Institution: | School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China;Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China,Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China and School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China |
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| Abstract: | The satellite data from CALIPSO(Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations) were used to illustrate the vertical distribution of dust aerosols in Beijing caused by a sandstorm via Xinjiang, Gansu, Inner Mongolia and surrounding areas during March 8 to 11, 2013. Moreover, the optical properties parameters like backscatter coefficient, depolarization ratio and color ratio were also studied. Results show that during the dust process in Beijing area, the depolarization ratio of aerosol was between 0.1-0.4, color ratio was above 0.3, and the aerosol distributed at height from less than 3 km to 4 km during March 10-11. Furthermore, the HYSPLIT(Hybrid Single Particle Lagrangian Integrated Trajectory) model and NAAPS aerosol model were adopted to simulate the dust source and transmission, which shows that the sand originated from South Xinjiang basin and the midwest of Inner Mongolia, and influenced Gansu, middle and western Inner Mongolia, Ningxia, northern Shanxi, northwesern Hebei, Beijing and other regions. Finally, the two-wavelength inversion algorithm was used to retrieve the aerosol optical thickness in Beijing under dust weather in March 10 and 11. They were 0.334 and 0.621, respectively. |
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| Keywords: | Sandstorm CALIPSO Dust aerosol Attenuated backscatter coefficient Depolarization ratio Color ratio |
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