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首页> 外文期刊>Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of >Evaluation of the Himawari-8 Shortwave Downward Radiation (SWDR) Product and its Comparison With the CERES-SYN, MERRA-2, and ERA-Interim Datasets
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Evaluation of the Himawari-8 Shortwave Downward Radiation (SWDR) Product and its Comparison With the CERES-SYN, MERRA-2, and ERA-Interim Datasets

机译：评估HIMAWARI-8短波向下辐射（SWDR）产品及其与CERES-SYN，MERRA-2和ERA临时数据集的比较

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摘要

The land surface shortwave downward radiation (SWDR), also known as surface incident solar radiation, is usually defined as the total solar spectral energy between 300 nm and 3000 nm that arrives at the earth's surface. The SWDR is an essential variable for numerous land models and thus need to be accurately mapped using various approaches. Although numerous efforts have been made to assess the applicability and accuracy of the SWDR datasets produced by satellite and numeric models, few studies have evaluated the performance of the SWDR products from Himawari-8. In this paper, the Himawari-8 SWDR products with both 1 km and 5 km spatial scales were evaluated using ground measurements. The validation results indicate that both of the Himawari-8 SWDR products are in close agreement with ground measurements, even though obvious biases are found. Also, an in-depth intercomparison between the Himawari-8 SWDR product at a 5 km resolution and three other SWDR radiation datasets (CERES-SYN, MERRA-2, and ERA-Interim) was conducted. Here, the Himawari-8 showed the highest levels of accuracy among the four SWDR datasets. Considering its higher temporal and spatial resolutions, the Himawari-8 SWDR products are more detailed and provide the unprecedented potential to improve land surface modeling and reveal the cloud-radiation interactions, even at a 10-min temporal scale.
机译：陆地表面短波向下辐射（SWDR），也称为表面入射太阳辐射，通常定义为300nm和3000nm之间的总太阳谱能量，到达地球表面。 SWDR是众多土地模型的必需变量，因此需要准确地使用各种方法来准确映射。虽然已经进行了许多努力来评估卫星和数字模型生产的SWDR数据集的适用性和准确性，但很少有研究则评估了SWDR产品从HIMARI-8的性能。本文使用地面测量评估了1公里和5公里的空间尺度的Himawari-8 SWDR制品。验证结果表明，这两种Himawari-8 SWDR产品与地面测量密切一致，即使发现明显的偏见。此外，Himawari-8 SWDR产品之间的深入互相达到了5公里的分辨率和三个其他SWDR辐射数据集（CERE-SYN，MERRA-2和ERA临时）。在这里，Himawari-8在四个SWDR数据集中显示了最高级别的准确性。考虑到其较高的时间和空间分辨率，Himawari-8 SWDR产品更详细地提供了前所未有的潜力，以改善陆地表面建模并揭示云辐射相互作用，即使以10分钟的时间量表也是如此。

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    Yu Yuechi; Shi Jiancheng; Wang Tianxing; Letu Husi; Yuan Pengfei; Zhou Wang; Hu Lu;

  • 作者单位

    Chinese Acad Sci Inst Remote Sensing & Digital Earth State Key Lab Remote Sensing Sci Beijing 100101 Peoples R China|Beijing Normal Univ Beijing 100101 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China;

    Chinese Acad Sci Inst Remote Sensing & Digital Earth State Key Lab Remote Sensing Sci Beijing 100101 Peoples R China|Beijing Normal Univ Beijing 100101 Peoples R China;

    Chinese Acad Sci Inst Remote Sensing & Digital Earth State Key Lab Remote Sensing Sci Beijing 100101 Peoples R China|Beijing Normal Univ Beijing 100101 Peoples R China;

    Chinese Acad Sci Inst Remote Sensing & Digital Earth State Key Lab Remote Sensing Sci Beijing 100101 Peoples R China|Beijing Normal Univ Beijing 100101 Peoples R China;

    Wuhan Univ State Key Lab Informat Engn Surveying Mapping & R Wuhan 430079 Hubei Peoples R China;

    Chinese Acad Sci Inst Remote Sensing & Digital Earth State Key Lab Remote Sensing Sci Beijing 100101 Peoples R China|Beijing Normal Univ Beijing 100101 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China;

    Chinese Acad Sci Inst Remote Sensing & Digital Earth State Key Lab Remote Sensing Sci Beijing 100101 Peoples R China|Beijing Normal Univ Beijing 100101 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Clouds and the Earth's Radiant Energy System Synoptic (CERES-SYN); ERA-Interim; evaluation; Himawari-8; land surface shortwave downward radiation (SWDR); Modern-Era Retrospective Analysis for Research and Applications; Version 2 (MERRA-2);

    机译：云层和地球辐射能量系统概要（CERES-SYN）;ERA临时;评估;HIMAWARI-8;陆地表面短波向下辐射（SWDR）;研究和应用的现代化回顾性分析;版本2（Merra-2）;

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