MODIS和OMI数据评估阅兵期间北京市大气减排成效

发布时间：2018-04-22 01:32

本文选题：阅兵蓝 + MODIS　；参考：《遥感学报》2017年04期

【摘要】：卫星观测不仅能反映区域宏观大气污染状况,也能从城市尺度上监测大气污染物的变化。基于以上优势,本文利用MODIS气溶胶光学厚度(AOD)和OMI对流层NO_2垂直柱浓度数据,比较2015年与2012年—2014年以及2015年3个时期(减排前、减排中、减排后)AOD和NO_2柱浓度的变化,定性分析了阅兵期间华北平原地区污染物减排效果,重点定量评估北京市联控减排措施的效果。研究发现2015年减排中华北平原重污染地区AOD和NO_2柱浓度相比于前3年同期有明显降低。定量分析北京市的减排效果得到:2015年减排中较前3年同期而言,AOD降低59%,NO_2柱浓度降低41%;较2015年减排前而言,AOD降低73%,NO_2柱浓度降低30%,去除气象条件影响后,AOD下降43%,NO_2柱浓度下降21%,说明严格的联控减排措施有效地改善了空气质量,气象条件也起到积极的作用。减排措施结束后,AOD和NO_2柱浓度比减排中分别增加159%和71%。研究结果表明,卫星遥感与地基监测评估效果相当,能反映北京地面污染物排放能力;它既能观测区域尺度大气污染变化,又可评估城市尺度大气污染减排。随着卫星技术水平的提高,期望未来卫星遥感可作为一种独立手段来定量评估区域及城市尺度空气质量减排措施的效果。
[Abstract]:Satellite observations can not only reflect the regional macro air pollution, but also monitor the changes of atmospheric pollutants on the urban scale. Based on the above advantages, the vertical column concentration data of MODIS aerosol optical thickness (AOD) and OMI tropospheric NO_2 were used to compare the changes of NO_2 and NO_2 concentrations between 2015 and 2012-2014 and 2015 (before, during and after emission reduction). The emission reduction effect of pollutants in North China Plain during the parade was qualitatively analyzed, and the effect of Beijing joint control emission reduction measures was evaluated quantitatively. It was found that the concentrations of AOD and NO_2 in the heavily polluted areas of the North Plain of China in 2015 were significantly lower than those in the previous three years. Quantitative analysis of emission reduction effect in Beijing: AOD reduction in 2015 compared with the previous three years in the same period, AOD decreased 59% and no 2 column concentration decreased 41%; compared with 2015 emission reduction, AOD decreased 73 no 2 column concentration decreased 30%; after removing the influence of meteorological conditions, AOD decreased 43%. The drop of 21 degrees shows that strict joint measures to reduce emissions have effectively improved air quality. Weather conditions also play a positive role. The concentrations of AOD and NO_2 were increased by 159% and 71% respectively. The results show that the effect of satellite remote sensing is equivalent to that of ground-based monitoring and evaluation, which can reflect the emission capacity of ground pollutants in Beijing, and it can not only observe the variation of atmospheric pollution at the regional scale, but also evaluate the emission reduction of atmospheric pollution at the urban scale. With the improvement of satellite technology, it is expected that satellite remote sensing can be used as an independent means to quantitatively evaluate the effect of regional and urban air quality emission reduction measures in the future.
【作者单位】：中国科学院遥感与数字地球研究所遥感科学国家重点实验室;中国科学院大学;清华大学环境学院环境模拟与污染控制国家重点联合实验室;北京市环境保护监测中心;
【基金】：国家高技术研究发展计划(863计划)(编号:2014AA06A511) 国家自然科学基金(编号:41501476) 北京市科技计划(No.Z161100001116013)~~
【分类号】：X51

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