Distribution Characteristics of Atmospheric Pollutions in Meiyu Season Observed by Lidar over Hefei

被引:3
作者
Fang Xin [1 ,2 ]
Wang Min [3 ]
Hu Shunxing [4 ]
机构
[1] Univ Sci & Technol China, Chinese Acad Sci, Key Lab Geospace Environm, Hefei 230026, Anhui, Peoples R China
[2] Univ Sci & Technol China, Sch Earth & Space Sci, Mengcheng Natl Geophys Observ, Hefei 230026, Anhui, Peoples R China
[3] Anhui Atmospher Observat & Tech Support Ctr, Hefei 230031, Anhui, Peoples R China
[4] Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei 230031, Anhui, Peoples R China
来源
CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG | 2019年 / 46卷 / 01期
关键词
atmospheric optics; extinction coefficient; lidar; aerosol; ozone; Meiyu season;
D O I
10.3788/CJL201946.0110003
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
By analyzing monitoring data of atmospheric pollutions in Meiyu season measured by AML-2 mobile lidar, we study the temporal and spatial distribution characteristics of aerosol and ozone in troposphere over Hefei in Meiyu season, and analyze the effect of precipitation on pollution reduction. The results show that the aerosol extinction coefficient is small in Meiyu season and decreases with the increase of altitude on the whole. At 0.5 km, the extinction coefficient is from 0.1 km(-1) to 0.18 km(-1) in multiple days in Meiyu season. Continuous precipitation plays a significant role in reducing aerosol concentration, the mean aerosol extinction coefficient before Meiyu season and in Meiyu season is 0.37 km(-1) and 0.14 km(-1), respectively. The temporal and spatial variation characteristics of ozone are obvious in Meiyu season. The ozone concentration decreases with the increase of altitude and shows large daily variation. In June 20 and 24, 2008, the difference of mass concentration of ozone at 0.4 km is about 59.5 mu g/m(3). Compared with concentration of ozone before Meiyu season, the concentration in Meiyu season is greatly reduced with the maximum difference up to 41.8 mu g/m(3) at the same height.
引用
收藏
页数:8
相关论文
共 20 条
[1]  
deSonoulepnikoff L, 1997, APPL OPTICS, V36, P5026
[2]  
Dong XB, 2018, SCI TECHNOLOGY ENG, V182, P204
[3]   ANALYSIS OF ATMOSPHERIC LIDAR OBSERVATIONS - SOME COMMENTS [J].
FERNALD, FG .
APPLIED OPTICS, 1984, 23 (05) :652-653
[4]  
Ge Zhan-qi, 2007, Journal of Atmospheric and Enviromental Optics, V2, P263
[5]   DIFFERENTIAL ABSORPTION LIDAR MEASUREMENT OF VERTICAL OZONE PROFILES IN THE TROPOSPHERE THAT CONTAINS AEROSOL LAYERS WITH STRONG BACKSCATTERING GRADIENTS - A SIMPLIFIED VERSION [J].
KOVALEV, VA ;
MCELROY, JL .
APPLIED OPTICS, 1994, 33 (36) :8393-8401
[6]  
Liu C, 2015, CHINESE J LASERS, V42
[7]  
[刘闽 Liu Min], 2017, [中国环境监测, Environmental Monitoring in China], V33, P126
[8]  
MaX M, 2016, CHINESE J LASERS, V43
[9]   GROUND-BASED LASER DIAL SYSTEM FOR LONG-TERM MEASUREMENTS OF STRATOSPHERIC OZONE [J].
MCDERMID, IS ;
GODIN, SM ;
LINDQVIST, LO .
APPLIED OPTICS, 1990, 29 (25) :3603-3612
[10]   Tropospheric ozone differential-absorption lidar using stimulated Raman scattering in carbon dioxide [J].
Nakazato, Masahisa ;
Nagai, Tomohiro ;
Sakai, Tetsu ;
Hirose, Yasuo .
APPLIED OPTICS, 2007, 46 (12) :2269-2279