激光雷达观测淮南大气SO_2和NO_2浓度廓线实例分析  

Analysis of SO_2 and NO_2 concentration profiles in Huainan detected by a lidar

作　　者：刘琳琳 杨杰 黄见[1,2] 苑克娥 尹凯欣 胡顺星 LIU Linlin;YANG Jie;HUANG Jian;YUAN Ke’e;YIN Kaixin;HU Shunxing(Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;University of Science and Technology of China, Hefei 230026, China;Research Center for Laser Physics and Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China)

机构地区：[1]中国科学院安徽光学精密机械研究所中国科学院大气光学重点实验室,合肥230031 [2]中国科学技术大学,合肥230026 [3]中国科学院理化技术研究所激光物理与技术研究中心,北京100190

出　　处：《激光技术》2019年第3期353-358,共6页Laser Technology

基　　金：国家重大科研仪器设备研制专项资助项目(41127901);国家自然科学基金资助项目(41575032;41505019);中国科学院国防创新基金资助项目(CXJJ-17S063)

摘　　要：为了初步探究淮南地区大气SO_2及NO_2的不同时空分布特征,采用自研的差分吸收激光雷达系统测得某地(淮南地区)部分月份大气SO_2及NO_2气体浓度分布廓线,并选取其中典型实例从气体水平浓度日变化、垂直浓度变化以及水平浓度月变化3个方面分析了SO_2及NO_2分布特点。结果表明,同一天夜晚时刻,SO_2及NO_2气体浓度大于下午时刻的气体浓度;SO_2及NO_2气体垂直浓度随高度增加呈递减趋势;SO_2及NO_2气体水平浓度月变化变现为冬季月份气体浓度最大,夏季月份气体浓度最小,春、秋季月份次之。SO_2及NO_2浓度变化特征是人群活动和气象条件变化共同作用的结果。In order to preliminarily explore the spatial and temporal distribution characteristics of SO2 and NO2 in the atmosphere of Huainan area, one self-developed differential absorption lidar system was used to measure the distribution profiles of SO2 and NO2 concentrations in the atmosphere of a certain Huainan area in some months. The typical examples were selected and the distribution characteristics of SO2 and NO2 were analyzed from three aspects of diurnal variation of horizontal concentration, variation of vertical concentration and monthly variation of horizontal concentration of gases. The results show that, the concentration of SO2 and NO2 at night on the same day was higher than that at afternoon. The vertical concentration of SO2 and NO2 decreased with the increase of altitude. The monthly variation of horizontal concentration of SO2 and NO2 gas is the highest in winter and the lowest in summer, the second in spring and autumn months. The variation of SO2 and NO2 concentration is the result of the interaction of population activities and meteorological conditions.

关 键 词：大气光学 二氧化硫 二氧化氮 差分吸收激光雷达 

分 类 号：TN958.98[电子电信—信号与信息处理]