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MODIS C061气溶胶光学厚度产品在西安地区的适用性研究

Applicability of MODIS C061 Aerosol Optical Depth Products in Xi''''an Region

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摘要

气溶胶对大气能见度、人体健康以及人类生产生活等都具有重要的影响,同时也是极其重要的气候强迫因子。对气溶胶的环境和气候效应的研究已经成为当前大气科学研究的热点之一[1-4]。改革开放以来,我国经历了快速发展,高强度的污染物排放使多个地区环境质量逐渐恶化,大气污染已成为最严重的环境问题之一。我国西北地区既是生态环境脆弱区,又是气候变化敏感区[5],同时其具有的复杂地形地貌和大气污染排放源,使得该地区气溶胶的含量、种类等都存在较大的时空分布差异。因此,准确评估西北地区气溶胶的物理光学特性以及时空分布特性等对于气候变化研究和国计民生都具有重要的研究意义。

Abstract

Aerosol optical depths (AODs) are calculated for the Xi''an region based on the observation data of a sky radiometer (POM-02) and Beer-Lambert-Bouguer law. These AODs are used as true values to compare with three inversion algorithms'' results of AODs in the MODIS C061 product of NASA Terra satellite, and the accuracies and applicability of those three inversion algorithms for the Xi''an region are discussed. Furthermore, we statistically analyze the spatial distributions and seasonal variation characteristics of AODs for the Xi''an region and its surrounding region using MODIS aerosol products. The results indicate the following: there is the best relationship between the AODs inverted from the MODIS DT&DB product and POM-02 data among those three MODIS inversion algorithms of Terra satellite, and its correlation coefficient is approximately 0.92. Thus, the MODIS DT&DB product is the most appropriate product for studying climate change and air pollution in the Xi''an region. Dust storms and human activities are the main sources of aerosols in the Guanzhong Plain. The AODs are greater in the eastern part and less in the western part of Guanzhong Plain, and the high-value centers are mainly distributed in the regions such as Xi''an, Xianyang, and Weinan. The AODs in the Xi''an and Xianyang regions reach their maximum and minimums in the spring and autumn, respectively. However, the AODs from other regions in the Guanzhong Plain show apparently seasonal variation characteristics with greater values in spring and summer and lower values in autumn and winter.

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DOI:10.3788/AOS201939.1001004

所属栏目:大气光学与海洋光学

基金项目:国家自然科学基金、陕西省自然科学基金、陕西省教育厅科学研究计划专项;

收稿日期:2019-03-27

修改稿日期:2019-06-10

网络出版日期:2019-10-01

作者单位    点击查看

刘晶晶:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048
刘芸:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048
王国英:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048
华灯鑫:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048
王骏:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048
闫庆:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048西安理工大学数控机床及机械制造装备集成教育部重点实验室, 陕西 西安 710048
何廷尧:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048
高飞:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048

联系人作者:华灯鑫(dengxinhua@xaut.edu.cn)

备注:国家自然科学基金、陕西省自然科学基金、陕西省教育厅科学研究计划专项;

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引用该论文

Jingjing Liu,Yun Liu,Guoying Wang,Dengxin Hua,Jun Wang,Qing Yan,Tingyao He,Fei Gao. Applicability of MODIS C061 Aerosol Optical Depth Products in Xi''''an Region[J]. Acta Optica Sinica, 2019, 39(10): 1001004

刘晶晶,刘芸,王国英,华灯鑫,王骏,闫庆,何廷尧,高飞. MODIS C061气溶胶光学厚度产品在西安地区的适用性研究[J]. 光学学报, 2019, 39(10): 1001004

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