基于OMI卫星数据的渤海对流层NO2分布特征  

Spatial-temporal distribution of tropospheric NO_2 over Bohai Sea by OMI data

作　　者：姜杰[1,2] 查勇[2] 阮鲲[3,2] 张倩倩 许秀玲 

机构地区：[1]南京邮电大学地理与生物信息学院,江苏南京210046 [2]虚拟地理环境教育部重点实验室,南京师范大学地理科学学院,江苏南京210046 [3]解放军理工大学气象学院,江苏南京211101

出　　处：《海洋环境科学》2012年第6期843-846,共4页Marine Environmental Science

基　　金：国家科技支撑计划(2008BAC34B07);江苏省属高校自然科学重大基础研究项目(08KJA170001);江苏高校优势学科建设工程资助项目

摘　　要：利用OMI卫星数据,分析了2005～2009年渤海对流层NO2的时空分布特征,研究发现近5 a渤海海域对流层NO2浓度空间分布不均,季节变化及年度增长趋势明显。空间分布上渤海西南部的渤海湾及莱州湾等海域浓度比较大,而东北部的辽东湾浓度比较低;NO2浓度季节变化也非常大,12月份垂直柱浓度(13.464×1015mol/cm2)是8月份(4.959×1015mol/cm2)的2.7倍。分析渤海湾与其周边的京津塘、环渤海西南部地区NO2浓度的月变化,发现冬季京津塘地区对渤海NO2浓度影响比较大,而夏季环渤海西南部地区对其影响比较大。The spatial-temporal distribution of tropospheric NO2 over the Bohai Sea during 2005 to 2009 was analysed on basis of Aura Ozone Monitoring Instrument （OMI） data. The obtained results showed that the tropospheric NO2 over the Bohai Sea was obviously in-creased during 5 years and the column density has the marked season variation and spatial distribution. The areas with the highest col-umn density are located in the coastal parts of the Bohai Gulf and Laizhou Bay, the other parts in the Bohai Sea are characterized by the low density, specially in the Liaodong Bay. The seasonal feature of tropospheric NO2 distribution over the Bohai Sea is characterized by the high values in winter and low values in summer. The column density in （ 13. 464 × 10^15 mol/cm^2 ） is 2.7 times in Aug. （4. 959 × 1015 mol/cm^2 ）. Through the analysis of the monthly changes of tropospheric NO2over the Bohai Bay and Beijing-Tianjin-Tang area and the ern watershed in the Bohai Sea, it is derived that the column density of tropospheric NO2 over Beijing-Tianjin-Tang area greatly impacts on the Bohai Sea in winter, whereas the density of the ern watershed in the Bohai Sea greatly impacts on the Bohai Sea in sum-mer to.

关 键 词：对流层NO2 渤海 OMI卫星数据 时空分布 

分 类 号：X87[环境科学与工程—环境工程]