Comparison of hourly aerosol retrievals from JAXA Himawari/AHI in version 3.0 and a simple customized method.
Comparison of hourly aerosol retrievals from JAXA Himawari/AHI in version 3.0 and a simple customized method.
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JAXA Himawari/AHI 3.0 版每小时气溶胶反演与简单定制方法的比较
DOI：
10.1038/s41598-020-77948-5
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发表时间：
2020-11-30
影响因子：
4.6
通讯作者：
Chen B
中科院分区：
文献类型：
--
作者：
Xu W;Wang W;Chen B
自2015年7月7日以来，日本新一代地球静止气象Himawari-8卫星上携带的高级Himawari成像仪一直在进行高时间分辨率的气溶胶观测。然而，以往的研究缺乏一个全面的质量评估和空间覆盖分析的AHI每小时气溶胶产品（3级版本3.0）在整个磁盘扫描。本研究根据2016年5月至2019年2月的气溶胶机器人网络（AERONET）和海上气溶胶网络（MAN）观测结果评估了不同AHI气溶胶产品（AODPure和AODMerified）和简单定制产品（AODMean）的监测准确性。结果表明，AHI的AODmean与AERONET的AOD观测值的一致性优于AODpure和AODmergedover陆地观测值（R = 0.81，bias =-0.011），且AHI陆地观测值的区域性差异显著，而AODmergedover海岸观测值的区域性差异相对较好（R = 0.89，bias = 0.053）。在海洋上空，AHI反演的AOD相对于MAN观测值总体偏高，而AODpure反演的不确定性相对较低（R = 0.96，bias = 0.057）。不同AHI产品的每小时比较表明，在下午晚些时候（16：00-17：00 LT）在陆地上和中午（10：00-13：00 LT）在海岸上的强劲表现。AHI的气溶胶光学厚度反演结果与MODIS的气溶胶光学厚度反演结果相比，无论是陆地还是海洋，都有明显的低估。此外，AHI AOD产品的性能差异还受到植被覆盖、污染程度和相对湿度的影响。在时空覆盖方面，不同AHI产品的反演结果表明，AODmean比AODpure和AODmerged具有更高的覆盖能力，AHI反演的覆盖能力存在明显的区域差异。
Advanced Himawari imager (AHI) carried on the new-generation geostationary meteorological Himawari-8 satellite of Japan has been generating aerosol observations with a high temporal resolution since 7 July 2015. However, the previous studies lack a comprehensive quality assessment and spatial coverage analysis of AHI hourly aerosol products (level 3 version 3.0) across the full disk scan. The monitoring accuracy of different AHI aerosol products (AODpureand AODmerged) and a simple customized product (AODmean) was evaluated against Aerosol Robotic Network (AERONET) and Maritime Aerosol Network (MAN) observations from May 2016 to February 2019 in this study. Results showed that AHI AODmeandemonstrates a better agreement to AERONET AOD measurements than AODpureand AODmergedover land (R = 0.81, bias = − 0.011) and all the AHI land retrievals present a significant regional performance differences, while the relatively better performance is observed in AODmergedover the coastal regions (R = 0.89, bias = 0.053). Over ocean, AHI exhibited overall overestimation in retrieving AOD against MAN observations and the relatively lower uncertainties were found in AODpureretrievals (R = 0.96, bias = 0.057). The hourly comparisons in different AHI products demonstrated a robust performance in the late afternoon (16:00–17:00 LT) over land and around the noon (10:00–13:00 LT) over coast. AHI AOD products indicated an obvious underestimation when compared to MODIS AOD retrievals over both land and ocean. Furthermore, the performance differences of AHI AOD products have also affected by the vegetation cover, pollution levels and relative humidity. For spatiotemporal coverage, the results of different AHI products demonstrated that AODmeancan achieve relatively higher coverage than AODpureand AODmerged, and AHI retrievals present significant regional differences in coverage capability.
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影响因子：
4.4
作者：
Holben, BN;Tanré, D;Zibordi, G
通讯作者：
Zibordi, G
影响因子：
8.2
作者：
Diner, DJ;Barge, LM;Smith, BG
通讯作者：
Smith, BG
影响因子：
4.6
作者：
Liu B;Ma Y;Gong W;Zhang M;Wang W;Shi Y
通讯作者：
Shi Y
影响因子：
3.8
作者：
Levy, R. C.;Mattoo, S.;Hsu, N. C.
通讯作者：
Hsu, N. C.
Himawari-8/AHI 气溶胶反演的暗目标方法：应用与验证
DOI：
10.1109/tgrs.2018.2854743
发表时间：
2019-01-01
影响因子：
8.2
作者：
Ge, Bangyu;Li, Zhengqiang;Qie, Lili
通讯作者：
Qie, Lili