| 黑河流域MODIS气溶胶产品时空对比分析 |
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| 引用本文： | 宋晓春,刘兴科,孙玮婕.黑河流域MODIS气溶胶产品时空对比分析[J].测绘通报,2020,0(7):64-69. |
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| 作者姓名： | 宋晓春 刘兴科 孙玮婕 |
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| 作者单位： | 1. 兰州交通大学测绘与地理信息学院, 甘肃 兰州 730070;2. 地理国情监测技术应用国家地方联合工程 研究中心, 甘肃 兰州 730070;3. 甘肃省地理国情监测工程实验室, 甘肃 兰州 730070;4. 河南大学, 河南 郑州 330029 |
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| 基金项目： | 国土资源部城市土地资源监测与仿真重点实验室开放基金（KF-2018-03-069）；兰州交通大学优秀平台（201） |
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| 摘 要： | 卫星遥感监测提供的气溶胶产品很多，而当前使用最多的是Terra和Aqua卫星上搭载的MODIS传感器获得卫星影像数据反演气溶胶光学厚度AOD。MODIS数据反演得到的气溶胶光学厚度产品目前经历了C002、C003、C004、C005、C006等版本。为了对比分析黑河流域的MODIS气溶胶产品，本文首先对黑河流域范围内C006版本的气溶胶光学厚度产品的精度进行了验证，然后对比分析了研究区气溶胶光学厚度的时空变化特征。采用黑河生态水文遥感试验（HIWATER）气溶胶光学厚度地基观测数据验证MODIS气溶胶光学厚度产品的精度。验证结果显示MODIS气溶胶产品的精度较高，可信度也较高，具有显著的适用性。对比分析发现研究区的气溶胶光学厚度的时空变化特征很明显，下午星Aqua的气溶胶光学厚度值比上午星Terra的高，并且中下游气溶胶光学厚度值比上游地区较高。夏季的气溶胶光学厚度比其他季节的气溶胶光学厚度值高，春季气溶胶光学厚度高值区域集中分布在下游地区，夏季的高值区域分布在上游区域，秋季的高值区域分布比较均匀，冬季高值主要分布在研究区的西部地区。
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| 关 键 词： | 气溶胶光学厚度 误差检验 对比分析 时空变化 AOD分布 |
| 收稿时间： | 2019-11-04 |
| 修稿时间： | 2020-01-06 |
Spatial-temporal contrast analysis of MODIS aerosol products in Heihe River basin |
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| SONG Xiaochun,LIU Xingke,SUN Weijie.Spatial-temporal contrast analysis of MODIS aerosol products in Heihe River basin[J].Bulletin of Surveying and Mapping,2020,0(7):64-69. |
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| Authors: | SONG Xiaochun LIU Xingke SUN Weijie |
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| Institution: | 1. Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou 730070, China;2. National-Local Joint Engineering Research Center of Technologies and Applications for National Geographic State Monitoring, Lanzhou 730070, China;3. Gansu Provincial Engineering Laboratory for National Geographic State Monitoring, Lanzhou 730070, China;4. Henan University, Zhengzhou 330029, China |
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| Abstract: | Satellite remote sensing monitoring and aerosol foundation observation networks provide a data basis for aerosol research. Satellite remote sensing monitoring commonly used Terra and Aqua satellites are equipped with MODIS sensors to obtain satellite imagery data inversion of aerosol optical thickness AOD. MODIS data inversion of the aerosol optical thickness products currently experienced C002, C003, C004, C005, C006 and other versions. In order to compare and analyze the MODIS aerosol products in the Heihe River basin, this paper first validates the accuracy of the aerosol optical thickness product of the C006 version in the Heihe River basin, and then analyzes the spatial-temporal characteristics of aerosol optical thickness in the study area. The accuracy of the MODIS aerosol optical thickness product is verified by the observation data of the HIHATER aerosol optical thickness. The results show that MODIS aerosol products have higher accuracy and higher reliability than those with high applicability. The aerosol optical thickness of the aerosol in the study area is higher than that in the morning, and the optical thickness of the aerosol in the middle and lower reaches is higher than that in the upstream region. The aerosol thickness of summer is higher than that of aerosol in other seasons. The high value of aerosol optical field in spring is concentrated in the downstream area. The high value area of summer is distributed in the upstream area, and the distribution of high value area in autumn is relatively uniform. In winter, the high values are mainly distributed in the western region. |
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| Keywords: | aerosol optical thickness error test comparative analysis spatio-temporal change AOD distribution |
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