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 Lidar and InfraredPathfinder 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01-04之间,色比大于03。3月10—11日北京地区的沙尘气溶胶分布高度从3 km以下被抬升至约4 km。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0334和0621。
The satellite data from CALIPSO（Cloud-Aerosol Lidar and Infrared Pathfinder SatelliteObservations） were used to illustrate the vertical distribution of dust aerosols in Beijing caused by a sand-storm via Xinjiang, Gansu, Inner Mongolia and surrounding areas during March 8 to 11, 2013. Moreo-ver, the optical properties parameters like backscatter coefficient, depolarization ratio and color ratio werealso studied. Results show that during the dust process in Beijing area, the depolarization ratio of aerosolwas between 0 1-0 4, color ratio was above 0 3, and the aerosol distributed at height from less than3 km to 4 km during March 10-11. Furthermore, the HYSPLIT（Hybrid Single Particle Lagrangian Inte-grated Trajectory） model and NAAPS aerosol model were adopted to simulate the dust source and trans-mission, which shows that the sand originated from South Xinjiang basin and the midwest of Inner Mongo-lia, and influenced Gansu, middle and western Inner Mongolia, Ningxia, northern Shanxi, northwesernHebei, Beijing and other regions. Finally, the two-wavelength inversion algorithm was used to retrievethe aerosol optical thickness in Beijing under dust weather in March 10 and 11. They were 0 334 and0 621, respectively.
出处
《气象科学》
北大核心
2015年第5期550-557,共8页
Journal of the Meteorological Sciences
基金
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)
