How Accurate Are Satellite-Derived Surface Solar Radiation Products over Tropical Oceans?
How Accurate Are Satellite-Derived Surface Solar Radiation Products over Tropical Oceans?
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DOI：
10.1175/jtech-d-20-0099.1
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发表时间：
2021-02
影响因子：
2.2
通讯作者：
Wenjun Tang;Kun Yang;J. Qin;Jun Li;J. Ye
中科院分区：
文献类型：
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作者：
Wenjun Tang;Kun Yang;J. Qin;Jun Li;J. Ye
海洋表面太阳辐射是研究海-气相互作用和海洋生态的基础，卫星遥感是获取海洋表面太阳辐射的主要途径。最近开发了一个新的高分辨率(10公里；3小时)SSR产品，主要基于国际卫星云气候学项目H系列(ISCCP-HXG)最新发布的云产品，可在1983年7月至2018年12月期间使用。在这项研究中，我们将这一SSR产品与全球热带系泊浮标阵列(GTMBA)70个浮标点的现场观测进行了比较，并将其与另一款著名的来自云和地球辐射能量系统(CERES；4.1版)的卫星SSR产品进行了比较，后者的空间分辨率约为100公里。结果表明，对于海洋和陆地表面，ISCCP-HXG SSR产品的精度普遍高于CERES SSR产品。我们还发现，两种卫星SSR产品(ISCCP-HXG和CRERS)在海洋上的精度都高于陆地上的精度，并且当产品的空间分辨率粗到≥30 km时，ISCCP-HXG SSR的精度有很大提高。
Surface solar radiation (SSR) over the ocean is essential for studies of ocean–atmosphere interactions and marine ecology, and satellite remote sensing is a major way to obtain the SSR over ocean. A new high-resolution (10 km; 3 h) SSR product has recently been developed, mainly based on the newly released cloud product of the International Satellite Cloud Climatology Project H series (ISCCP-HXG), and is available for the period from July 1983 to December 2018. In this study, we compared this SSR product with in situ observations from 70 buoy sites in the Global Tropical Moored Buoy Array (GTMBA) and also compared it with another well-known satellite-derived SSR product from the Clouds and the Earth’s Radiant Energy System (CERES; edition 4.1), which has a spatial resolution of approximately 100 km. The results show that the ISCCP-HXG SSR product is generally more accurate than the CERES SSR product for both ocean and land surfaces. We also found that the accuracy of both satellite-derived SSR products (ISCCP-HXG and CRERS) was higher over ocean than over land and that the accuracy of ISCCP-HXG SSR improves greatly when the spatial resolution of the product is coarsened to ≥ 30 km.