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乌鲁木齐市一次灰霾天气过程中的AOD时空动态分析
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Abstract:
近年来大气环境质量问题日益严重，乌鲁木齐市各地区空气质量差、能见度低等问题严重影响到了人们的生活。AOD受地表人类活动以及下垫面类型的影响而产生了复杂多样性以及不均匀等性质。通过大量数据研究气溶胶光学厚度的时空分布，有助于掌握AOD的分布规律，对大气颗粒物污染的监测和预测具有十分重要的作用。本文利用MODIS1 B级数据MOD021 KM日数据反演出2016年初乌鲁木齐市一次严重灰霾天气过程中的AOD时空动态情况，初步分析了这次天气过程中大气颗粒物的来源与去向。
In recent years, the problem of atmospheric environmental quality has become increasingly serious. The problems of poor air quality and low visibility in various regions of Urumqi have seriously affected people’s lives. AOD is subject to complex diversity and inhomogeneity due to the influence of surface human activities and the type of underlying surface. Studying the spatiotemporal distribution of aerosol optical thickness through a large amount of data helps to grasp the distri-bution law of AOD and plays an important role in monitoring and predicting atmospheric particu-late pollution. In this study, using MODIS1 B-level data MOD021 KM daily data to reflect the AOD spatiotemporal dynamics during a severe haze weather in Urumqi in early 2016, combined with meteorological data and using the backward airflow trajectory analysis model, the pollutants spread over Urumqi during this period. The process was analyzed, and the source and destination of atmospheric particulate matter during the weather process were analyzed.
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