MODIS C006气溶胶产品的真实性检验与分析
毕业论文关键词：MODIS，AERONET，气溶胶光学厚度，真实性检验
Abstract This paper introduces improvements of the algorithms of the MODIS (Moderate-resolution Imaging Spectroradiometer) C006 aerosol products in detail. We choose the Asia（0 ~ 60 n, 70 ~ 140 e） as the experimental zone, using AERONET ground-based observations datas of the selected sites to inspect authenticity of 10 km, 3 km MODIS products . Choose every site of MODIS, compare the different datas of collections and AERONET (Aerosol Robotic Network) data, show the results for accuracy evaluation using parameters of linear regression, such as slope, intercept, the correlation coefficient. Summarizes the different data sets of aerosol product accuracy of all kinds of areas. On this basis,analyze the applicability of the MODIS C006 products in China. Results show that: 1) 10km MODIS products, the maximum correlation of sample points of each site were greater than 0.83. The datas of MODIS AOD (Aerosol Optical Depth) of XiangHe stand are best with intercept and slope close to the ideal state, and value of correlation is as high as 0.95. 2) 3 km MODIS products increased the value of correlation overall, with the complement of 10km MODIS products, making the MODIS C006 aerosol products have applicability certainly in China .
Keywords: MODIS, AERONET, AOD, Validation
目 录
摘要.I
Abstract.Ⅱ
1. 绪论.1
1.1 研究背景及意义.1
1.1.1 气溶胶概况1
1.1.2 气溶胶遥感探测3
1.1.3 MODIS发展情况.3
1.2 国内外研究进展4
1.3 论文研究内容和章节安排. 4
2. 数据与方法4
2.1 数据与研究区.4
2.1.1 研究区域4
2.1.2 MODIS数据.4
2.1.3 AERONET数据.6
2.2 真实性检验方法. .7
2.2.1 地基和卫星数据的时空匹配.7
2.2.2 MODIS C006资料验证方法.7
3. 结果与分析8
3.1 MODIS 10km气溶胶产品产品真实性检验8
3.2 MODIS 3km气溶胶产品真实性检验10
3.3 MODIS C006气溶胶产品在中国的适用性分析.11
4. 结果与展望.12
4.1 主要研究成果与创新点.12
4.2 研究不足及展望.12
参考文献.13
致谢16
1 绪论
1.1 研究背景及意义
1.1.1 气溶胶概况
大气气溶胶是指悬浮在大气中的固体颗粒和液体微粒与气体载体共同组成的多相体系（孙林，2006），气溶胶粒子直径一般多在10-3到10 之间。气溶胶里的成分十分复杂，典型的有尘埃、烟粒、海盐颗粒这类无机物，除此之外还有微生物、植物饱子、花粉等粒子，这些粒子的形状十分多样化。一系列水的生成物（云、雾、雨雪等）并不属于气溶胶的范畴。如果按照气溶胶来源来分类，可将气溶胶分为人为源和自然源。由人类活动产生的气溶胶就属于人为源，诸如汽车排放尾气、燃烧化石燃料等人类活动过程中所产生的固体烟粒等。在自然现象中产生的气溶胶称为自然源，诸如岩石风化、火山爆发、海洋活动中产生的粒子。气溶胶由具有多样化形状的粒子组成。
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