基于CALIPSO卫星探测的2007—2018年西南地区平流层气溶胶的光学特性分析  

Optical Properties of Stratosphere Aerosol in Southwestern China from CALIPSO Satellite Detection During 2007-2018

作　　者：王敏 胡春 赵福燕 王杰 潘红林 WANG Min;HU Chun;ZHAO Fuyan;WANG Jie;PAN Honglin(Sichuan Meteorological Observation Data Center,Chengdu 610000,China;Institute of Desert Meteorology,China Meteorological Administration,Urumqi 830002,China)

机构地区：[1]四川省气象探测数据中心,四川成都610000 [2]中国气象局乌鲁木齐沙漠气象研究所,新疆乌鲁木齐830002

出　　处：《沙漠与绿洲气象》2021年第5期93-100,共8页Desert and Oasis Meteorology

基　　金：中国沙漠气象科学研究基金(Sqj2017014)。

摘　　要：基于CALIPSO(Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations)卫星2007—2018年的3级平流层气溶胶廓线资料,分析了西南地区平流层气溶胶的光学特性。结果表明:在地理和季节上西南地区平流层气溶胶浓度较低;在夏季,西南地区平流层气溶胶光学厚度的均值出现最大值0.0007;平流层气溶胶总衰减后向散射值的廓线分布随着高度的增加而减小,在10~11 km高度出现最大值。这可能是由于对流层顶部和平流层底部之间气溶胶的相互交换。同时,平流层气溶胶总衰减后向散射值的纬向(22.5°~32.5°N)分布在7月出现均值最大值,为0.0006×10^(-3) km^(-1)·sr^(-1),而经向分布(90°~110°E)在1月出现最大值,为0.0018×10^(-3) km^(-1)·sr^(-1)。研究结果可为气候及环境的变化研究提供有力的科学依据。Based on level 3 stratosphere aerosol profile data retrieved from CALIPSO during 2007-2018,optical properties of stratospheric aerosols over the southwestern China are analyzed.The results are as follows:stratospheric aerosol shows relatively low concentration in the study area with consistent seasonal and geographical distributions,and the maximum Aerosol optical depth(AOD)is 0.0007 in summer.The vertical distribution of total attenuated backscatter(TAB)increases as the altitude decreases,and the maximum value occurs at the height from 10 km to 11 km.It could be attributed to the aerosol exchange between the top troposphere and bottom stratosphere.In addition,the maximum zonal distributions(22.5°~32.5°N)of TAB occurs in July with a value of 0.0006×10^(-3) km^(-1) sr^(-1),the meridian maximum(90°~110°E)of TAB occurs in January with a value of 0.0018×10^(-3) km^(-1) sr^(-1).

关 键 词：平流层 气溶胶 CALIPSO 西南地区 

分 类 号：X16[环境科学与工程—环境科学]