东篱科研大数据发现系统（DRDS）

位置：成果数据库 > 期刊 > 期刊详情页

CALIOP对一次秸秆焚烧后气溶胶光学特性的探测分析

ISSN号：1006-9585
期刊名称：气候与环境研究
时间：2011
页码：469-478
分类：P407.5[天文地球—大气科学及气象学]
作者机构：[1]中国科学技术大学地球和空间科学学院,合肥230026, [2]安徽省气象局,合肥230026, [3]中国科学院安徽光学精密机械研究所,合肥230031
相关基金：国家自然科学基金项目40705014;国家自然科学基金重点项目40730950; 国家重点基础研究发展计划2010CB428603; 中国科学院知识创新工程重要方向项目群KZCX2-WY-Q11-04 中国科学院知识创新工程KJCX2-YW-N25
相关项目：基于星载微波雷达和激光雷达探测的副热带深厚对流云及穿透性对流云研究

关键词：气溶胶, 光学特性, 激光雷达, 秸秆焚烧, 退偏振率, 双波长比, aerosol, optical property, CALIOP, biomass burning, depolarization ratio, color ratio

中文摘要：

采用星载激光雷达（Cloud-Aerosol LIdar with Orthogonal Polarization,CALIOP）资料研究了2008年6月2日华东秸秆焚烧排放气溶胶的光学特性,并与2006~2008年统计结果进行了对比。结果表明：1）CALIOP能够有效探测到气溶胶层,探测结果符合生物质燃烧气溶胶的典型特征;气溶胶分布及廓线特点可以由火点分布及大气环流形势做出解释。2）个例中气溶胶光学特性廓线与该地区2006~2008年全年平均和夏季平均都存在一定差异。个例中后向散射系数廓线的峰值显示出气溶胶垂直分布结构,对应高度上的退偏振率比平均偏大而双波长比则偏小,表明秸秆焚烧源气溶胶层由大量非球形的细粒子组成。3）个例中气溶胶粒子谱特征与3年夏季平均接近而与3年平均差别很大,显示出个例的季节特征。更多个例的统计分析和地基观测的验证有助于了解秸秆焚烧源气溶胶的普遍规律。

英文摘要：

Cloud-Aerosol LIdar with Orthogonal Polarization（CALIOP） remote sensing data is used to analyze the optical properties of aerosols released from burning straw in East China on 2 June 2008.And a comparison is made between the case and 3-year statistics during 2006-2008.It is showed that the aerosols were effectively detected by CALIOP,and the detection data is in accordance with the typical characteristics of biomass burning.The distribution and profile features of aerosols can be explained according to the locations of the fire points and atmospheric circulation.And secondly,it is also shows that the optical property in the case is different from 3-year June-July-August average and 3-year average of this area.Backscatter profiles in the case illustrate the vertical distribution of aerosols.In the corresponding altitude depolarization ratio is larger than the average,while color ratio is lower than the average,which suggests that biomass burning aerosol layers are constituted of numerous nonspherical fine particles.Thirdly,the optical property describes the seasonal feature instead of annual feature.More case studies and observations are valuable to find out the universal characteristics.

同期刊论文项目