气候变化领域集成服务门户(CCPortal): Global offshore wind energy resources using the new ERA-5 reanalysis

CCPortal

DOI	10.1088/1748-9326/abb10d
	Global offshore wind energy resources using the new ERA-5 reanalysis
	Soares P.M.M.; Lima D.C.A.; Nogueira M.
发表日期	2020
ISSN	17489318
卷号	15 期号:10
英文摘要	A global quantitative characterization of offshore wind power density is presented over the economic exclusive zones (EEZs), at annual and seasonal scales, based on the recently released ECMWF ERA-5 reanalysis. Compared to its predecessors, ERA-5 features increased spatial and temporal resolutions, along with improved model parameterizations and data assimilation methodologies. Consequently, the present study represents an updated benchmark of wind resources over the global oceans. Further robustness to this argument is provided by our results showing that of the EEZs with large wind energy potential are characterized by regional-scale circulation features (coastal jets and breezes, land-sea and topographic circulations), known require high model resolution to be accurately simulated. Additionally, it is demonstrated that larger errors (up to 50%) can result from estimating wind power density from logarithmically extrapolated near-surface wind speed when compared to using high-resolution model level information. Coarser (daily) temporal resolution is also found to cause widespread increases in offshore wind power density errors between 10% and 30% compared to higher (hourly) resolution data. Further leveraging on the high vertical resolution of ERA-5, we show the large benefit of future increases in hub-heights from 100 m to 250 m for global offshore wind resources. Such technological advance results in widespread gains (ranging between +5% and +50%) throughout the global EEZs and no losses for all seasons. Moreover, the gains are >+10% for all regions with large wind energy potential at 100 m and >+40% over the Arctic Pacific sector and in regions characterized by the presence of coastal low-level jets. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	coastal areas; ERA-5; global offshore wind energy; renewable energies
语种	英语
scopus关键词	Offshore oil well production; Wind; Wind power; High vertical resolution; High-resolution models; Off-shore wind power; Offshore wind energy resource; Offshore wind resources; Quantitative characterization; Spatial and temporal resolutions; Technological advances; Offshore power plants; detection method; energy resource; global ocean; spatiotemporal analysis; wind power; Arctic Ocean; Pacific Ocean
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153556
作者单位	Instituto Dom Luiz (IDL), Faculdade de Ciências da Universidade de Lisboa, Campo Grande Edifício C8, Piso 3, Lisboa, 1749-016, Portugal
推荐引用方式 GB/T 7714	Soares P.M.M.,Lima D.C.A.,Nogueira M.. Global offshore wind energy resources using the new ERA-5 reanalysis[J],2020,15(10).
APA	Soares P.M.M.,Lima D.C.A.,&Nogueira M..(2020).Global offshore wind energy resources using the new ERA-5 reanalysis.Environmental Research Letters,15(10).
MLA	Soares P.M.M.,et al."Global offshore wind energy resources using the new ERA-5 reanalysis".Environmental Research Letters 15.10(2020).