【摘要】 利用OMI卫星数据分析了2008-2017年全球及我国O₃柱总量浓度空间分布特征和长时间序列变化,总结了地形、人口密度、城市扩张和前体物NO2等因素对中国地区O₃柱总量浓度产生的影响。结果表明,全球O₃柱总量高浓度区主要位于中低纬度且季节性差异十分显著,冬季的含量相对较低,夏季的含量相对较高。中国地区由于独特的地形条件、渐增的人口数量和稳步增长的经济发展趋势,中国O₃柱总量浓度具有东南高西北低的分布格局,且含量在逐年降低。通过对流层NO2浓度与O₃柱总量浓度的拟合结果发现,前体物NO2对O₃的生成和分布具有重要影响。更多还原

【Abstract】 Using OMI satellite data,the spatial distribution characteristics and long time series variations of both global and Chinese total O₃ column concentrations during 2008-2017 were analyzed.The effects of topography,population density,urban expansion and NO2 on concentration of total O₃ column in China were summarized.The results show that the distribution of high concentration of global O₃ column is mainly located in the middle and low latitudes,and the seasonal difference is very significant.The content in winter is relatively low,and the content in summer is relatively high.Owing to the unique topographic conditions,the increasing population and the steady growth trend of economic development,the concentration of total O₃ column in China has a distribution pattern of high in Southeast and low in northwest,and the content is decreasing year by year.By fitting the concentration of NO2 in troposphere with the concentration of total O₃ column,it is found that the precursor NO2 plays an important role in the formation and distribution of O₃.更多还原