基于OMI数据天津市NO_2浓度分布特征及其适用性  

Temporal and Spatial Distribution Characteristics of Tropospheric NO_2 and Its Adaptability in Tianjin Using OMI Satellite Remote Sensing Data

作　　者：李鹏[1] 肖致美[1] 陈魁[1] 孙韧[1] 关玉春[1] 刘彬[1] 李丹[1] 

机构地区：[1]天津市环境监测中心,天津300191

出　　处：《环境科学与技术》2016年第1期183-186,204,共5页Environmental Science & Technology

基　　金：国家科技支撑计划课题(2014BAC23B01);环保公益性行业科研专项(201409002);天津市重大科技专项(14ZCDGSF00027)

摘　　要：利用Aura卫星上OMI传感器反演获取的2013-2014年对流层NO2垂直柱浓度,探究了天津市对流层NO2垂直柱浓度的时空分布特征及其与NO2质量浓度的关系。结果表明,天津市对流层NO2柱浓度年均值为18.67×1015molec/cm2,在津冀地区处于中等浓度水平。NO2垂直柱浓度空间分布极不平衡,表现出中部地区浓度偏高、南北两部浓度偏低的空间分布格局;NO2垂直柱浓度在各月份呈现"V"分布,表现出冬季浓度最高,春季次之,夏季最低的特点。OMI卫星反演的NO2月均柱浓度分布趋势及其值域比率与自动站监测数据质量浓度基本一致,柱浓度与质量浓度相关系数为0.694 8,满足0.01显著性水平检验,可根据对流层NO2柱浓度来反演地面NO2质量浓度。This paper studied the temporal and spatial distribution of tropospheric NO2 and its adaptability in Tianjin using OMI satellite remote sensing data from January 2013 to December 2014. Results showed that annual average NO2 column concentration was 18.67×10^15molec/cm^2, showing a moderate concentration level among Tianjin-Hebei region. The spatial distribution of NO2 in Tianjin showed a significant difference. In general, it presented the characteristic of higher in the middle areas than that in the north and south areas. Besides, NO2 column concentration in winter was significantly higher than that in summer, and they presented a ＂V＂ distribution among months. There was a good consistency between the tropospheric column concentration and ground mass concentration, with the correlation coefficient as 0.694 8, satisfactory to 0.01 significance level testing, so the ground mass concentration could be inverted from tropospheric column concentration.

关 键 词：OMI 对流层NO2垂直柱浓度 时空分布特征 天津市 

分 类 号：X511[环境科学与工程—环境工程]