| 京津冀地区MODIS 3 km气溶胶光学厚度产品与10 km产品的对比分析 |
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| 引用本文： | 张颖蕾,崔希民.京津冀地区MODIS 3 km气溶胶光学厚度产品与10 km产品的对比分析[J].环境科学学报,2020,40(2):429-437. |
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| 作者姓名： | 张颖蕾 崔希民 |
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| 作者单位： | 中国矿业大学(北京)地球科学与测绘工程学院,北京100083,中国矿业大学(北京)地球科学与测绘工程学院,北京100083 |
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| 基金项目： | 国家自然科学基金（No.51474217）；中央高校基本科研业务费专项资金（No.2010YD08） |
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| 摘 要： | 本文以京津冀为研究区,对该地区的大气气溶胶光学厚度的分布及变化进行分析.利用AERONET地基观测的气溶胶光学厚度(AOD)数据,对最新发布的MODIS/Aqua C6.1 3 km AOD产品在京津冀地区的适用性进行验证,并将3 km产品与MODIS/Aqua C6.1 10 km产品进行对比.分析结果表明:MODIS 3 km AOD产品比AERONET地基AOD的相关性高,相关系数达到了0.95;与MODIS 10 km AOD产品相比,其下垫面为城市地区的反演精度低;在时空分布上,MODIS 3 km AOD产品更好的呈现了气溶胶梯度变化,季平均结果中,四季3 km AOD值都略高于10 km产品.以上结论可为MODIS 3 km AOD产品在京津冀地区的使用提供了借鉴与参考.
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| 关 键 词： | 气溶胶光学厚度 MODIS C6.1 暗目标 AERONET 时空分布 |
| 收稿时间： | 2019/6/26 0:00:00 |
| 修稿时间： | 2019/8/23 0:00:00 |
A comparative study of MODIS 3 km aerosol optical depth products and 10 km products in the Beijing-Tianjin-Hebei region |
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| ZHANG Yinglei and CUI Ximin.A comparative study of MODIS 3 km aerosol optical depth products and 10 km products in the Beijing-Tianjin-Hebei region[J].Acta Scientiae Circumstantiae,2020,40(2):429-437. |
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| Authors: | ZHANG Yinglei and CUI Ximin |
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| Institution: | College of Geoscience and Surveying Engineering, China University of Mining & Technology, Beijing 100083 and College of Geoscience and Surveying Engineering, China University of Mining & Technology, Beijing 100083 |
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| Abstract: | In this paper, the spatial-temporal characteristics of aerosol loading over Beijing-Tianjin-Hebei region are investigated. The applicability of the latest released MODIS/Aqua C6.1 3 km AOD products in the Beijing-Tianjin-Hebei region are evaluated with Aerosol Robotic Network (AERONET) ground-based observations. Moreover, the 3 km products are also compared with MODIS/Aqua C6.1 10 km products. The results demonstrate that the correlation between MODIS 3 km AOD and AERONET AOD is high to the level of 0.95. However, 3 km AOD products also have lower retrieval accuracy with urban underlying surface than 10 km products. The results of spatial and temporal distribution reveal that 3 km AOD products provided a better aerosol gradient. Seasonal comparisons show the 3 km AOD products are slightly higher than the 10 km products in all seasons. The conclusions above can provide references for the application of MODIS 3 km AOD products in the Beijing-Tianjin-Hebei region. |
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| Keywords: | aerosol optical depth (AOD) MODIS C6 1 dark target AERONET spatial and temporal distribution |
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