主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报

• 论文 • 上一篇    下一篇

2007年冬季大连市区气溶胶垂直剖面特征

黄艇1 ;宋煜1;肖韶荣2 ;盖晓波1   

  1. (1大连市气象局,辽宁 大连 116001;2南京信息工程大学,江苏 南京 210044)
  • 收稿日期:2008-12-04 修回日期:2009-03-17 出版日期:2009-08-26 发布日期:2009-08-26

Vertical section characteristics of aerosol in winter of 2007 over Dalian, Liaoning province

HUNAG Ting1 ; SONG Yu1; XIAO Shao-rong2; GAI Xiao-bo1   

  1. (1.Dalian Meteorological Bureau, Dalian 116001, China; 2. Nanjing University of Information Science & Technology, Nanjing 210044, China)
  • Received:2008-12-04 Revised:2009-03-17 Online:2009-08-26 Published:2009-08-26

摘要: 选用2007年1月8—30日期间8个无云天的激光雷达资料进行分析。基于Fernald方法反演得到气溶胶消光系数廓线,结合无线电探空资料分析了边界层内气溶胶时空分布,并将反演的激光雷达最低观测高度处(180 m)的气溶胶消光系数与地面PM10、能见度资料进行对比分析。结果表明:冬季大连市区气溶胶主要分布在2 km以下区域,早晨和夜间在0.5 km以下区域经常存在一个气溶胶层;气溶胶消光系数廓线与探空资料较吻合;反演激光雷达最低观测高度处(180 m)的气溶胶消光系数与地面的PM10浓度呈正相关,与能见度呈负相关,相关性较好。

关键词: 米散射激光雷达资料, 大气边界层, 消光系数, PM, 能见度, 大连市

Abstract: Lidar data of 8 clear weather days selecting from January 8 to 30 in 2007 were analyzed in Dalian. Aerosol extinction coefficient profiles were retrieved based on Fernald method. The temporal-spatial distributions of aerosol in boundary layer were discussed in terms of the wireless sounding data. At the same time, aerosol extinction coefficient at 180 m height (the lowest observation height) was contrasted with PM10 and visibility on the ground. The results show that aerosol mainly distributes within the height of 2 km in winter over Dalian. There exists an aerosol layer within the height of 0.5 km in the morning and at night. Aerosol extinction coefficient profiles accord with the sounding data. Aerosol extinction coefficient at 180 m height is a positive relation with PM10 concentration on the ground, and it is negative with visibility.

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