华北地区霾期间对流层中低层气溶胶垂直分布  

Vertical distribution of aerosols in middle and low troposphere in Northern China during haze periods

作　　者：秦艳[1] 章阮[1] 籍裴希[1] 陈勇航[1] 张华[2] 毛晓琴[1] 刘海晨[1] 张栋[1] 

机构地区：[1]东华大学环境科学与工程学院,上海201620 [2]中国气象局国家气候中心,北京100081

出　　处：《环境科学学报》2013年第6期1665-1671,共7页Acta Scientiae Circumstantiae

基　　金：国家重点基础研究发展计划(No.2011CB403405);国家自然科学基金(No.40975012)~~

摘　　要：基于美国宇航局(NASA)的CALIPSO星载激光雷达监测数据,通过分析总后向散射系数、体积退偏比和色比,对华北地区2007年1月1日至2008年12月31日期间出现灰霾时对流层中低层气溶胶光学和微物理特性的垂直分布进行了研究.结果表明:灰霾期间对于4km以下的对流层中低层大气总体来说,非球形气溶胶出现频率略高于球形气溶胶,小粒径气溶胶出现频率高于大粒径气溶胶.在4km以下的大气中,气溶胶出现频率在1～2km高度范围内最高,在2～3km高度范围内最低;球形气溶胶在2～3km高度范围内出现频率最高,非球形气溶胶出现频率在1～2km高度范围内最高;大粒径气溶胶在1～2km高度范围内出现频率最高,小粒径气溶胶在0～1km高度范围内出现频率最高.Based on the lidar observation data from CALIPSO satellite of National Aeronautics and Space Administration（NASA）,the vertical distribution of optical and micro-physical properties of aerosols in middle and low troposphere in northern China during the haze periods from January 1,2007 to December 31,2008 were characterized by analyzing total attenuated backscatter coefficient,volume depolarization ratio and color ratio.The results showed that during the haze periods,for middle and low troposphere below 4 km,the frequency of spherical aerosol particles was slightly higher than that of non-spherical aerosol particles and the frequency of small particles was higher than that of large particles.The frequency of aerosols was the highest at 1-2 km altitude and the lowest at 2-3 km altitude;the frequency of spherical aerosols was the highest at 2-3 km altitude and that of non-spherical aerosols was the highest at 1-2 km altitude;the frequency of large aerosol particles was the highest at 1-2 km altitude and that of small ones was the highest at 0-1 km altitude.

关 键 词：CALIPSO 华北地区 灰霾 气溶胶 

分 类 号：X513[环境科学与工程—环境工程]