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Comparative evaluation of thirteen satellite-derived surface solar radiation products over China

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Titel: Comparative evaluation of thirteen satellite-derived surface solar radiation products over China
Autoren: Junmei He, Liang Hong, Bing Hu, Wenjun Tang
Quelle: Science of Remote Sensing, Vol 12, Iss , Pp 100291- (2025)
Verlagsinformationen: Elsevier, 2025.
Publikationsjahr: 2025
Bestand: LCC:Physical geography
LCC:Science
Schlagwörter: Surface solar radiation, Satellite products validation, High spatial resolution, China, Physical geography, GB3-5030, Science
Beschreibung: High-quality surface solar radiation (SSR) data are essential for assessing climate change impacts and quantifying solar energy potential. Satellite remote sensing is the primary method to obtain SSR data globally and regionally, especially in regions with sparse ground observation networks. This study validated thirteen satellite-derived SSR products over China using in situ data from the China Meteorological Administration (CMA). Results revealed that Himawari-8-based estimates (H8-ITP, H8-AIR, and GeoNEX) outperformed other products. CERES-SYN, GLASS, ISCCP-ITP, and CLARA-A3 showed moderately inferior performance, whereas BESS, the four MCD18 variants (MCD18A1.V61, MCD18A1.V62, MCD18C1.V61, MCD18C1.V62), and DSCOVR/EPIC demonstrated relatively poor performance in China. Across all stations, the mean bias error (MBE) for these products ranged from −16.9 (BESS) to 26.1 (DSCOVR/EPIC) W m−2, and the root mean square error (RMSE) from 27.8 (H8-ITP) to 50.0 (DSCOVR/EPIC) W m−2 at the daily scale. It should be noted that systematic biases (exceeding ±10 W m−2) were observed in H8-AIR, GeoNEX, BESS, and DSCOVR/EPIC. H8-AIR and GeoNEX displayed apparent overestimation with MBE values of 14.8 W m−2 and 12.3 W m−2, respectively. H8-ITP demonstrated the best overall performance with a minimum RMSE of 27.8 W m−2, a smaller MBE of 3.9 W m−2, and a higher R of 0.95 compared to other products. All products exhibit a pronounced accuracy decline in August, with DSCOVR/EPIC showing the sharpest summer deterioration, whereas H8-ITP and GeoNEX remain the most stable. Regionally, all products exhibited generally lower accuracy in the rugged southwestern plateau region and the cloudy southern part of China. These results would provide a valuable reference for selecting the most appropriate SSR product for specific needs, whether for solar energy assessments, climate studies, or surface radiative process analysis.
Publikationsart: article
Dateibeschreibung: electronic resource
Sprache: English
ISSN: 2666-0172
Relation: http://www.sciencedirect.com/science/article/pii/S2666017225000975; https://doaj.org/toc/2666-0172
DOI: 10.1016/j.srs.2025.100291
Zugangs-URL: https://doaj.org/article/4a8c74b24dda4e2d939ba3a57b05600c
Dokumentencode: edsdoj.4a8c74b24dda4e2d939ba3a57b05600c
Datenbank: Directory of Open Access Journals
Beschreibung
Abstract:High-quality surface solar radiation (SSR) data are essential for assessing climate change impacts and quantifying solar energy potential. Satellite remote sensing is the primary method to obtain SSR data globally and regionally, especially in regions with sparse ground observation networks. This study validated thirteen satellite-derived SSR products over China using in situ data from the China Meteorological Administration (CMA). Results revealed that Himawari-8-based estimates (H8-ITP, H8-AIR, and GeoNEX) outperformed other products. CERES-SYN, GLASS, ISCCP-ITP, and CLARA-A3 showed moderately inferior performance, whereas BESS, the four MCD18 variants (MCD18A1.V61, MCD18A1.V62, MCD18C1.V61, MCD18C1.V62), and DSCOVR/EPIC demonstrated relatively poor performance in China. Across all stations, the mean bias error (MBE) for these products ranged from −16.9 (BESS) to 26.1 (DSCOVR/EPIC) W m−2, and the root mean square error (RMSE) from 27.8 (H8-ITP) to 50.0 (DSCOVR/EPIC) W m−2 at the daily scale. It should be noted that systematic biases (exceeding ±10 W m−2) were observed in H8-AIR, GeoNEX, BESS, and DSCOVR/EPIC. H8-AIR and GeoNEX displayed apparent overestimation with MBE values of 14.8 W m−2 and 12.3 W m−2, respectively. H8-ITP demonstrated the best overall performance with a minimum RMSE of 27.8 W m−2, a smaller MBE of 3.9 W m−2, and a higher R of 0.95 compared to other products. All products exhibit a pronounced accuracy decline in August, with DSCOVR/EPIC showing the sharpest summer deterioration, whereas H8-ITP and GeoNEX remain the most stable. Regionally, all products exhibited generally lower accuracy in the rugged southwestern plateau region and the cloudy southern part of China. These results would provide a valuable reference for selecting the most appropriate SSR product for specific needs, whether for solar energy assessments, climate studies, or surface radiative process analysis.
ISSN:26660172
DOI:10.1016/j.srs.2025.100291