基于卫星遥感数据对中国陆地气溶胶光学特性及其垂直分布的研究

发布时间：2018-02-02 06:02

本文关键词： CALIPSO激光雷达气溶胶光学厚度垂直分布 PM_(2.5)　出处：《中国海洋大学》2015年硕士论文　论文类型：学位论文

【摘要】：近些年来,随着我国经济的快速发展,城市规模与人口比例也不断上升,各地的空气污染事件频发,大气环境状况严重影响到了我国人民正常的工作与生活,大气环境问题已经越来越受到人民和政府的关注,对我国陆地上大气环境的研究分析已经刻不容缓。本文基于CALIPSO、MODIS卫星遥感资料,AERONET地基气溶胶观测网数据和地面污染物信息数据,通过气溶胶及其相关特性和污染物指数分析我国陆地气溶胶类型、空间垂直分布和污染状态。利用2004年至2013年十年MODIS level3卫星遥感数据,对我国的气溶胶光学厚度进行年、季、月的统计分析,再对其变化趋势进行研究。结果表明,我国在东部地区的气溶胶较高,其中四川盆地、河南省、河北省、山东省地区的气溶胶处在较高水平,而东北地区的气溶胶有逐年升高的趋势。我国的气溶胶在不同月份和季节上变化情况较大,其中华东地区在6月的气溶胶均值最高,而冬季气溶胶均值相对较低,可知气溶胶受人口、地形、气候和经济影响明显。利用2009年至2013年CALIPSO产品数据对我国陆地上气溶胶类型与其垂直分布进行了研究,发现我国在近地面主要受污染沙尘和污染陆地型影响较重,大多集中在lkm以下,而用退偏比与高度简略的对我国气溶胶进行分类,我国各地应该对于上述两种气溶胶研究上重视,以更好的治理我们生存的大气环境。最后，，分析了我国整体的大气环境状况,并将2013年9月至2014年9月的CALIPSO气溶胶分层产品中3km以下分层的气溶胶光学厚度和柱状气溶胶光学厚度分别与青岛市AQI、PM10、PM2.5进行了相关性分析,得到较好的相关系数,验证了CALIPSO卫星遥感气溶胶分层数据产品在大气污染监测方面的有效性。
[Abstract]:In recent years, with the rapid development of our economy, the scale of cities and the proportion of population are also rising, air pollution events occur frequently, the atmospheric environment seriously affects the normal work and life of our people. The problem of atmospheric environment has been paid more and more attention by people and government. It is urgent to study and analyze the atmospheric environment on land in China. This paper is based on CALIPSO MODIS satellite remote sensing data. Based on the AERONET ground-based aerosol observation network data and ground pollutant information data, the aerosol types in China are analyzed by aerosol and its related characteristics and pollutant index. Spatial vertical distribution and pollution status. Based on the MODIS level3 satellite remote sensing data from 2004 to 2013, the annual, seasonal and monthly aerosol optical thickness in China is analyzed. The results show that the aerosols in the eastern part of China are relatively high, and the aerosols in Sichuan Basin, Henan Province, Hebei Province and Shandong Province are at a higher level. But the aerosol in Northeast China has an increasing trend year by year. The aerosol in China varies greatly in different months and seasons, and the average value of aerosol in East China is the highest in June. The average value of aerosols in winter is relatively low, which indicates that aerosols are affected by population and topography. The effects of climate and economy are obvious. The types and vertical distribution of aerosols on land in China are studied by using CALIPSO product data from 2009 to 2013. It is found that China is mainly affected by polluted dust and polluted land type near the ground, most of which are below lkm, and the aerosols in China are classified by depolarization ratio and height. All over China should pay attention to the above two kinds of aerosol research in order to better control our living atmospheric environment. Finally, the overall situation of the atmospheric environment in China is analyzed. The aerosol optical thickness and columnar aerosol optical thickness of CALIPSO aerosol delamination products below 3 km from September 2013 to September 2014 were compared with AQI in Qingdao. The correlation analysis of PM10 and PM2.5 shows that CALIPSO satellite remote sensing aerosol stratified data products are effective in air pollution monitoring.
【学位授予单位】：中国海洋大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X513;X87

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