一次强沙尘输送过程中气溶胶垂直分布特征研究-兰州大学.PDF

中国环境科学 2009,29(5) ：449~454 China Environmental Science 一次强沙尘输送过程中气溶胶垂直分布特征研究 1* 1 2 3 2 1 1 陈勇航 ,毛晓琴 ,黄建平 ,张 华 ,汤 强 ,潘 鹄 ,王晨浩 (1.东华大学环境科学与工程学院,上海 201620 ；2.兰州大学大气科学学院,甘肃 兰州 730000 ；3.中国气象局国家气候中心,北京 100081) 摘要：采用 CALIPSO 卫星的星载激光雷达资料,分析了 2007 年 3 月 28 日~4 月 2 日由西向东途经新疆、青海、甘肃、内蒙古、宁夏、陕 西、山西、河北、北京、山东、江苏、上海、台湾等省、市、自治区的一次远程强沙尘污染传输过程,对后向散射系数、退偏比、色比等 光学特性参数进行了研究.结果表明,这次过程中,较大的沙尘颗粒大多出现在近地面附近,而相对小的沙尘颗粒在对流层中高层垂直剖面 上分布比较均匀.CALIPSO 卫星资料能够较好地反映强沙尘远程传输过程中沙尘气溶胶光学特性的垂直分布特征及其粒子大小、不规则 性随高度的变化特征. 关键词：沙尘；气溶胶；CALIPSO 卫星；激光雷达；垂直分布 中图分类号：X513 文献标识码：A 文章编号：1000-6923(2009)05-0449-06 Vertical distribution characteristics of aerosol during a long-distance transport of heavy dust pollution. CHEN 1* 1 2 3 2 1 1 Yong-hang , MAO Xiao-qin , HUANG Jian-ping , ZHANG Hua , TANG Qiang , PAN Hu , WANG Chen-hao (1.College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China；2.College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China ；3.National Climate Center of China Meteorological Administration, Beijing 100081, China). China Environmental Science, 2009,29(5)：449~454 Abstract ： A case of long-distance transport of heavy dust pollution from west to east passing through Xinjiang, Qinghai, Gansu, Inner Mongolia, Ningxia, Shaanxi, Shanxi, Hebei, Beijing, Shandong, Jiangsu, Shanghai and Taiwan during March 28-April 2, 2007 was analyzed by using the lidar data onboard CALIPSO satellite. The optical parameters including back scattering coefficient, depolarization ratio, and color ratio were studied. Most large dust particles were near surface while relatively small ones st