基于MAX-DOAS的大气对流层SO_2垂直柱浓度遥测

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英文篇名：Measuring Tropospheric Vertical Column Density of SO_2 by Multi-Axis Differential Optical Absorption Spectroscopy 作者：田鑫 ; 李昂 ; 徐晋 ; 谢品华 ; 牟福生 ; 吴丰成 ; 胡肇焜 ; 张琼 ; 王汝雯 英文作者：TIAN Xin;LI Ang;XU Jin;XIE Pinhua;MOU Fusheng;WU Fengcheng;HU Zhaokun;ZHANG Qiong;WANG Ruwen;School of Environmental Science and Optoeclectronic Technology,University of Science and Technology of China;Key Laboratory of Environment Optics and Technology,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences;Center for Excellence in Regional Atmospheric Environment,Institute of Urban Environment,Chinese Academy of Sciences; 关键词：多轴差分吸收光谱技术 ; 对流层SO_2垂直柱浓度 ; 最优反演波段 ; 输送 英文关键词：multi-axis differential optical absorption spectroscopy;;vertical column density of tropospheric SO_2;;optimal retrieval wave band;;transportion 中文刊名：GDJY 英文刊名：Journal of Atmospheric and Environmental Optics 机构：中国科学技术大学环境科学与光电技术学院;中国科学院安徽光学精密机械研究所中国科学院环境光学与技术重点实验室;中国科学院区域大气环境研究卓越创新中心中国科学院城市环境研究所; 出版日期：2017-01-15 出版单位：大气与环境光学学报 年：2017 期：v.12;No.64 基金：国家863计划,2014AA06A508,2014AA06A511;; 国家自然科学基金,41530644,41405033;; 安徽省自然科学基金,1508085QD71~~ 语种：中文; 页：GDJY201701005 页数：10 CN：01 ISSN：34-1298/O4 分类号：37-46

摘要

基于多轴差分吸收光谱技术(multi-axis differential optical absorption spectroscopy,MAXDOAS)获得了对流层SO_2垂直柱浓度。采用不同参考谱和不同波段来获得SO_2差分斜柱浓度,通过对比发现,当圈天顶光谱作为参考谱的反演误差最小,且全天相对稳定波动小,误差小于5%。通过六个波段的对比选取了最优反演波段为307.5~315 nm。结合地面气象数据对2015年10月14日~18日的污染过程进行了研究,数据分析表明风速和风向是影响监测点SO_2浓度的两个重要因素,城市和电厂产生的SO_2会在东风和南风的影响下向监测点输送.通过研究表明,MAX-DOAS能够准确反演大气对流层SO_2垂直柱浓度信息,对于探究城市大气对流层SO_2垂直柱浓度、卫星校验、模型校验以及污染输送的研究具有重要意义。
        The vertical column density(VCD) of tropospheric SO_2 was obtained by using multi-axis differential optical absorption spectroscopy(MAX-DOAS).And differential slant column density(dSCD) of SO_2 was got by using different reference spectra and different wave bands.By comparison,the error and the variation of error was minimum when using the sequential reference,and the error was less than 5%.Six wave bands were selected and compared to determine the optimal retrieval wave band which was 307.5~315 nm.Combined with meteorological data,a contamination process from 14 th to 18 th,October,2015 was studied.The data analysis showed that wind speed and direction were two important factors affecting the concentration of SO_2in monitoring site.The SO_2 produced from city and power plants was transported to monitoring site under the influence of east and south wind.According to the research,MAX-DOAS can accurately inverse the atmospheric SO_2 VCD,which has great significance for exploring the tropospheric SO_2 VCD of the city,satellite calibration,model validation and studying pollution transport.

引文

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