基于CALIPSO对中国春季一次沙尘暴的研究  

Spatio-temporal distribution and transport behavior of a dust event based on the CALIPSO in China

作　　者：刘贞 张雪姣 郑有飞[3] 刘建军 

机构地区：[1]秦皇岛市气象局,秦皇岛066000 [2]合水县气象局,合水县745400 [3]江苏省气象灾害重点实验室,南京210044

出　　处：《环境科学学报》2016年第12期4315-4327,共13页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金面上项目(No.41075114);国家重点基础发展计划项目(No.2006CB403705)~~

摘　　要：文章利用CALIPSO卫星观测资料，结合气溶胶模式模拟，分析了2013年人春以来发生的第1次强沙尘天气过程中的沙尘气溶胶垂直分布特征及输送特性．结果表明：此次沙尘事件有两个源区，南疆盆地（源区一），沙尘先后输送影响我国内蒙古西南部、甘肃、宁夏等地区．2月27日沙尘在甘肃西部河西走廊附近，沙尘气溶胶分布在2～5km，退偏振比在0．1～0．5之间，色比在0．4～0．8之间；28日新疆地区沙尘气溶胶分布在4～12km，退偏振比在0．3-0．5，色比在0．5～1．0之间．蒙古国西南部地区（源区二），沙尘先后影响我国内蒙古中西部地区、甘肃、山西北部、陕西北部、河北北部和东北西南部地区，2月28日内蒙古沙尘气溶胶分布在4～11km，退偏振比在O．2～0．5之间，色比在0．5～1．2之间．The vertical structure and transport behavior of one strong dust event detected in spring 2003 were investigated using a combination of CALIPSO measurements and an aerosol model simulation. The results showed that dust was originated from either Southern Xinjiang Basin （ source 1 ） or Southwest region of Mongolia （source 2）. The dust originated in source l was transported to the region of southwest Mongolia, Gansu Province, Ningxia Province, etc. On Feb. 27, dust over the Hexi corridor in west Gansu Province was distributed between 2 and 5 km with depolarization ratio of 0.1-0.5 and color ratio of 0.4-0.8. On Feb. 28, dust in Xinjiang region was distributed between 4 and 12 km, with depolarization ratio of 0.3- 0.5 and color ratio of 0.5- 1.0. The dust originated from source 2 was transported to the region of middle-west Inner Mongolia, Gansu, north Shanxi, Shaanxi and Hebei and southwest of Northeast China region. Dust detected over Inner Mongolia on Feb. 28 was distributed between 4 km and 11 km with polarization ratio of 0.2- 0.5 and color ratio of 0.5 - 1.2.

关 键 词：CALIPSO 沙尘 后向散射 退偏振比 色比 垂直分布 

分 类 号：X513[环境科学与工程—环境工程]