【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。更多还原

【Abstract】 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 increased during 5 years and the column density has the marked season variation and spatial distribution.The areas with the highest column 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(13.464×1015 mol/cm2) is 2.7 times in Aug.(4.959×1015 mol/cm2).Through the analysis of the monthly changes of tropospheric NO2 over 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 summer to.更多还原