摘要
详细阐述了L625多波长激光雷达的系统结构和主要性能参数。介绍了L625激光雷达测量水汽混合比廓线的测量原理和数据处理方法。对2002年该雷达测量得到的水汽混合比廓线进行分析,得出了合肥地区董铺岛(31.9°N,117.17°E)上空水汽的时空月季变化特征。分析结果表明:8月份合肥地区上空0.63km处水汽混合比为11.2g/kg,在所有月份中为最高值;2月和12月相对比较干燥,同高度处水汽混合比值仅为2.3g/kg。同时,水汽的季节变化非常明显,表现为夏季比较湿润,0.63km高度处水汽混合比均值为7.8g/kg;冬季较为干燥,相同高度处水汽混合为2.6g/kg,水汽混合比减少了5.2g/kg。
The system configuration and main performance parameters of L625 multi wavelength lidar system were presented, at the same time, the measurement principle and data processing method of water vapor mixing ratio profile by L625 lidar were also presented in detail. The variation characters of water vapor mixing ratio profile over Hefei in vertical direction was obtained by analyzing the total data which measured by L625 lidar during 2002. The results indicated that the water vapor mixing ratio can reach 11.2 g...
出处
《红外与激光工程》
EI
CSCD
北大核心
2008年第S3期156-161,共6页
Infrared and Laser Engineering
基金
我国东部整层大气重要参数高分辨垂直分布探查.项目编号(2007FY110700)
关键词
激光雷达
水汽混合比
拉曼散射
垂直廓线
Lidar
Water vapor mixing ratio
Raman scattering
Vertical profile
