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摘要： 为研究季风对大气边界层 SO2变化的影响，利用2005~2014年OMI SO2、2015~2017年OMPS NMSO2遥感数据，选取中国季风区为研究对象，分析大气边界层SO2时空分布特征，并选取4座典型城市，通过相关性分析和HYSPLIT后向轨迹模拟。结果表明：中国季风区PBL SO2空间上呈现异质性，冬、夏季风变迁对于季风区大气边界层 SO2柱浓度变化影响明显；温度和气压是影响大气边界层 SO2柱浓度的主要气象因子，其次是地域性气象条件；冬季气流对日SO2柱浓度升高影响较大，四川盆地及来自印度半岛、孟加拉湾的西南气流对重庆市SO2柱浓度升高效果显著，银川市SO2受蒙古高原偏北气流及天山北部西北气流影响，天津市和杭州市受华北平原及蒙古高原地区气流的作用。 关键词： 2柱浓度')" href="#">SO2柱浓度;  季风区;  HYSPLIT模型;  气流     Abstract: The monsoon has obvious influences on biological migration, cultural formation, regional architectural structure, and changes in meteorological elements, but lacks study on the impact of the PBL SO2. In this paper, we make a study on the temporal and spatial distribution characteristics of the PBL SO2 in Chinese monsoon region by OMI SO2 from 2005 to 2014 and OMPS NMSO2 from 2015 to 2017 in order to identify the influence of monsoon on PBL SO2 in different regions. Four typical cities were selected to do correlation analysis, and HYSPLIT model was run for backward Trajectory simulation by the corresponding date of daily SO2 columns are greater than the monthly average in January 2012. The results show that china’s PBL SO2 is spatial heterogeneity; the change of winter and summer monsoon has obvious influence on the PBL SO2, temperature and pressure are the main factors affecting the concentration of the PBL SO2. Regional meteorological conditions have large differences in the dry and wet deposition, photochemical reaction and wind diffusion of SO2; the winter airflow has a greater impact on the increase of the SO2, internal discharge in the Sichuan Basin, and southwesterly airflow which comes from the Indian Peninsula and the Bay of Bengal has a significant effect on the increase of SO2 in Chongqing. Yinchuan is affected by the airflow that comes from the Mongolian Plateau or the Tianshan Mountains; Tianjin and Hangzhou are influenced by airflow come from the North China Plain or the Mongolian Plateau.

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