Assimilation of next generation geostationary aerosol optical depth retrievals to improve air quality simulations
Assimilation of next generation geostationary aerosol optical depth retrievals to improve air quality simulations
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DOI：
10.1002/2014gl062089
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发表时间：
2014-12
影响因子：
5.2
通讯作者：
P. Saide;Jhoon Kim;C. Song;Myungje Choi;Yafang Cheng;G. Carmichael
中科院分区：
文献类型：
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作者：
P. Saide;Jhoon Kim;C. Song;Myungje Choi;Yafang Cheng;G. Carmichael
计划中的地球同步卫星将提供高时间和空间分辨率的气溶胶光学厚度(AOD)反演，这将被并入目前使用低地球轨道(例如，中分辨率成像光谱仪)AOD的同化系统。通过使用通信、海洋和气象卫星(一颗观测东北亚的地球同步卫星)上的地球同步海洋彩色成像仪(GOCI)的AOD，在实际案例中探讨了这种增加的影响。将GOCI AOD加入同化系统产生了积极影响，与仅同化MODIS AOD相比，这些影响被发现是相当大的。我们发现，GOCI AOD可以显著改善韩国地面空气质量对沙尘、生物质燃烧烟雾和人为污染事件的模拟，当模式表示污染事件的程度和反演没有被云污染的时候。我们预计，未来的地球静止轨道飞行任务将对空气质量预报作出重大贡献，并为健康评估和气候研究提供更好的再分析。
Planned geostationary satellites will provide aerosol optical depth (AOD) retrievals at high temporal and spatial resolution which will be incorporated into current assimilation systems that use low‐Earth orbiting (e.g., Moderate Resolution Imaging Spectroradiometer (MODIS)) AOD. The impacts of such additions are explored in a real case scenario using AOD from the Geostationary Ocean Color Imager (GOCI) on board of the Communication, Ocean, and Meteorology Satellite, a geostationary satellite observing northeast Asia. The addition of GOCI AOD into the assimilation system generated positive impacts, which were found to be substantial in comparison to only assimilating MODIS AOD. We found that GOCI AOD can help significantly to improve surface air quality simulations in Korea for dust, biomass burning smoke, and anthropogenic pollution episodes when the model represents the extent of the pollution episodes and retrievals are not contaminated by clouds. We anticipate future geostationary missions to considerably contribute to air quality forecasting and provide better reanalyses for health assessments and climate studies.