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CN 11-1768/O4

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Himawari-8气溶胶光学厚度产品的验证分析
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作者单位:

1.河南理工大学测绘与国土信息工程学院;2.中国科学院大气物理研究所大气边界层物理与大气化学国家重点实验室

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基金项目:

国家重点研发计划项目(2016YFC0202001),国家自然科学基金面上项目41375036,河南省科技攻关项目(162102310089),河南省自然科学基金面上项目(182300410113),河南理工大学博士基金(B2016-14,B2017-08)


Validation Analysis of Himawari-8 Aerosol Optical Depth Products
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Affiliation:

The State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics,Chinese Academy of Sciences

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    摘要:

    Himawari-8是由日本气象局发射的新一代静止气象卫星,其搭载的传感器AHI(Advanced Himawari Imager)可实现10分钟/次的高时间分辨率对地观测。本文将2015年9月至2017年12月Himawari-8 2级气溶胶光学厚度(AOD)产品与AERONET 70个站点的地基观测数据进行对比验证分析,结果表明Himawari-8卫星反演的气溶胶光学厚度产品的精度存在极大的空间上的差异性,其中有48个站点Himawari-8 AOD与AERONET AOD之间存在较好的相关性(R>0.5),有22个站点Himawari-8卫星反演气溶胶光学厚度产品存在明显的低估现象。在American_Samoa,Bandung,Birdsville,Bukit_Kototabang,Canberra,Fowlers_Gap,Jabiru,QOMS_CAS等站点出现地基观测值很小而卫星反演的气溶胶光学厚度较大的情况。对绝对误差(Himawari-8 AOD与AERONET AOD的差)进行分析发现Himawari-8 AOD存在低估现象时绝对误差与AERONET AOD之间存在较好的相关性;在地基观测值很小而Himawari-8卫星反演AOD较大的地区绝对误差与Himawari-8 AOD之间存在较好的线性关系,这为Himawari-8 AOD反演算法的改进与完善提供了有用的基础资料。

    Abstract:

    Himawari-8 is a new generation of geostationary meteorological satellite launched by Japan Meteorological Administration. The sensor AHI (Advanced Himawari Imager) carried by Himawari-8 can achieve high temporal resolution observation for 10 minutes/time.. Level 2 Aerosol Optical Depth (AOD) dataset from Himawari-8 satellite was compared to AERONET AOD at 70 sites from September 2015 to December 2017. The results show that the precision of AOD products retrieved by Himawari-8 satellite has great spatial difference. Among them, there are 48 sites where there is a good correlation between Himawari-8 AOD and AERONET AOD (R>0.5). The Himawari-8 AOD clearly underestimated ground-based AOD at 22 sites. At the sites of American_Samoa, Bandung, Birdsville, Bukit_Kototabang, Canberra, Fowlers_Gap, Jabiru, QOMS_CAS, etc., ground-based AOD are small and Himawari-8 satellite retrived AOD is large. Analysis of the absolute error (difference between Himawari-8 AOD and AERONET AOD) found that there is a good correlation between absolute error and AERONET AOD when the Himawari-8 AOD underestimates ground-based observations. In areas where ground-based observations are small and satellite inversion datas is large, there is a good linear relationship between absolute error and Himawari-8 AOD. This provides useful basic information for the improvement and perfection of Himawari-8 AOD inversion algorithm.

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  • 收稿日期:2019-01-07
  • 最后修改日期:2019-04-08
  • 录用日期:2019-06-13
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