城市大气气溶胶时空变化特征的地基观测实验与遥感分析

发布时间：2018-08-27 06:47

【摘要】：近年来,越来越严重的空气污染问题愈发引起人们的广泛关注。大气污染和空气质量以其多因素性和时空多变性而存在着极大的不确定性,需要广泛深入的研究分析。大气气溶胶作为空气污染源,其时空分布、理化特性及来源机理已成为大气环境科学的研究热点。本文以淮海经济区的中心城市徐州市和京津冀地区空气污染严重的代表性城市石家庄市为研究对象,结合地基观测和卫星遥感手段,对研究地区的气溶胶进行星地联合观测与分析。在地基观测方面,利用CE-318太阳光度计对研究地区进行固定观测,同时利用MICROTOPS II手持式太阳光度计在石家庄市二环以内地区设计、开展了移动观测实验。在卫星遥感方面,选用MODIS的气溶胶光学厚度数据(MODIS AOD),首先,利用地基观测数据对MODIS AOD在研究地区的适用性进行了验证分析,然后在此基础上对包括研究地区在内的更大范围的气溶胶光学厚度的空间分布差异进行了分析。通过固定观测与移动观测相结合、地基观测与卫星数据相结合、时间分析与空间分析相结合的综合手段,利用数理统计和模型分析等方法,得到了观测期间内徐州市和石家庄市气溶胶的光学特性、各气溶胶光学特性参数的时序变化规律以及气溶胶光学厚度的空间分布特征,并了解了包括研究地区在内的更大范围的气溶胶光学厚度的空间分布差异。
[Abstract]:In recent years, more and more serious air pollution has attracted more and more attention. There are great uncertainties in air pollution and air quality due to their multivariate and spatio-temporal variability, which require extensive and in-depth research and analysis. As a source of air pollution, atmospheric aerosol has become a hot research topic in atmospheric environmental science, including its spatiotemporal distribution, physicochemical properties and origin mechanism. This paper takes Xuzhou City, the central city of Huaihai Economic Zone, and Shijiazhuang, a representative city with serious air pollution in the Beijing-Tianjin-Hebei region, as the research object, combining ground-based observation and satellite remote sensing. The aerosol in the study area was observed and analyzed by satellite-earth joint observation and analysis. In the field of ground-based observation, the CE-318 solar photometer is used to carry out the fixed observation in the study area. At the same time, the mobile observation experiment is carried out by using the MICROTOPS II hand-held solar photometer in the area within the second Ring of Shijiazhuang City. In the aspect of satellite remote sensing, the aerosol optical thickness data (MODIS AOD),) of MODIS is selected. Firstly, the applicability of MODIS AOD in the study area is verified and analyzed by using the ground-based observation data. Then, the spatial distribution difference of aerosol optical thickness in a larger range, including the study area, is analyzed. Through the combination of fixed observation and moving observation, ground-based observation and satellite data, time analysis and spatial analysis, the methods of mathematical statistics and model analysis are used. The optical properties of aerosols in Xuzhou and Shijiazhuang during the observation period, the temporal variation of the aerosol optical properties parameters and the spatial distribution characteristics of aerosol optical thickness are obtained. The spatial distribution of aerosol optical thickness in a wider range, including the study area, is also investigated.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X513;X87

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