利用激光雷达探测兰州地区气溶胶的垂直分布

被引：6

作者：

周碧 ^{[1
,2
]}

张镭 ^{[1
]}

隋兵 ^{[2
]}

蒋德明 ^{[2
]}

曹贤洁 ^{[1
]}

李霞 ^{[1
,3
]}

刘志雄 ^{[2
]}

机构：

[1] 兰州大学半干旱气候变化教育部重点实验室

[2] 湖南省气象局气象科学研究所气象防灾减灾湖南省重点实验室

[3] 北京市人工影响天气办公室

来源：

高原气象 | 2014年 / 33卷 / 06期

关键词：

兰州地区; 激光雷达; 气溶胶; 消光系数; 垂直分布;

D O I：

暂无

中图分类号：

P412.25 [雷达探测];

学科分类号：

0706 ; 070601 ;

摘要：

利用2006-2011年兰州大学半干旱气候与环境观测站激光雷达(CE-370-2)资料反演了兰州地区气溶胶消光系数的垂直廓线。结果表明:兰州地区气溶胶主要分布在2 km以下,其中1 km以下占60%;消光系数日变化在00:00(北京时,下同)-12:00逐渐增大,12:00达到最大,之后逐渐减小;气溶胶集中分布高度的季节演变为夏季3 km、秋季2.5 km、春季2 km、冬季1.5 km;对流层低层(2 km以下)气溶胶消光系数的季节分布为冬季0.20～0.85 km-1,占92%;春季0.05～0.45 km-1,占88%;秋季0.02～0.20 km-1,占82%;夏季0.04～0.08 km-1,占70%。沙尘天气时,气溶胶扩散至6 km,甚至更高;强沙尘天气时,激光雷达有效探测高度低于2 km,消光系数反演出现中断现象。消光系数垂直廓线演变与大气边界层垂直结构变化趋势基本一致。

引用

页码：1545 / 1550

页数：6

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