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Study on variational aerosol fields over Beijing and its adjoining areas derived from Terra-MODIS and ground sunphotometer observation

机译：基于Terra-MODIS和地面光度计观测的北京及其周边地区气溶胶场变化研究

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摘要

This paper presents a comprehensive observation technique on derived aerosols data from mobile sun-photometer graph and Terra-Moderate Resolution Imaging Spectroradiometer (MODIS) observation. Research results suggest that after being treated by the variational technique with respect to sunphotometer observations, the Terra-MODIS remote sensing aerosol data are remarkably improved, thus for the first time revealing features of the influence of aerosols and pollution emissions of Beijing and its adjoining areas (Hebei, Shandong, etc. provinces). The regional impact features of aerosols are related with the peripheral U-shape topography of Beijing. Analyses with Hybrid Single Particle Lagrangian Integrated Trajectory model (HYSPLIT-4) and meteorological data in the case studied confirm the pollutants diffusion process along the trajectory from the sources in the south-west region, and the regional aerosol impact features.
机译：本文介绍了一种从移动太阳光度计图和Terra-中等分辨率成像光谱仪（MODIS）观测到的气溶胶数据的综合观测技术。研究结果表明，在对日光光度计观测进行变分技术处理后，Terra-MODIS遥感气溶胶数据得到了显着改善，从而首次揭示了北京及其邻近地区气溶胶和污染排放的影响特征。 （河北，山东等省）。气溶胶的区域影响特征与北京周边的U形地形有关。利用混合单粒子拉格朗日综合轨迹模型（HYSPLIT-4）进行分析，并结合所研究的气象数据，确定了污染物从西南源沿轨迹的扩散过程以及区域气溶胶的影响特征。

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