气候变化领域集成服务门户(CCPortal): Global coastal attenuation of wind-waves observed with radar altimetry

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DOI	10.1038/s41467-021-23982-4
	Global coastal attenuation of wind-waves observed with radar altimetry
	Passaro M.; Hemer M.A.; Quartly G.D.; Schwatke C.; Dettmering D.; Seitz F.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Coastal studies of wave climate and evaluations of wave energy resources are mainly regional and based on the use of computationally very expensive models or a network of in-situ data. Considering the significant wave height, satellite radar altimetry provides an established global and relatively long-term source, whose coastal data are nevertheless typically flagged as unreliable within 30 km of the coast. This study exploits the reprocessing of the radar altimetry signals with a dedicated fitting algorithm to retrieve several years of significant wave height records in the coastal zone. We show significant variations in annual cycle amplitudes and mean state in the last 30 km from the coastline compared to offshore, in areas that were up to now not observable with standard radar altimetry. Consequently, a decrease in the average wave energy flux is observed. Globally, we found that the mean significant wave height at 3 km off the coast is on average 22% smaller than offshore, the amplitude of the annual cycle is reduced on average by 14% and the mean energy flux loses 38% of its offshore value. © 2021, The Author(s).
语种	英语
scopus关键词	algorithm; energy flux; radar altimetry; satellite data; significant wave height; wind wave; algorithm; article; circannual rhythm; coastal waters; seashore; telecommunication
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250670
作者单位	Deutsches Geodätisches Forschungsinstitut der Technischen Universität München, München, Germany; Commonwealth Scientific and Industrial Research Organisation Oceans and Atmosphere, Hobart, TAS, Australia; Plymouth Marine Laboratory (PML), Plymouth, United Kingdom
推荐引用方式 GB/T 7714	Passaro M.,Hemer M.A.,Quartly G.D.,et al. Global coastal attenuation of wind-waves observed with radar altimetry[J],2021,12(1).
APA	Passaro M.,Hemer M.A.,Quartly G.D.,Schwatke C.,Dettmering D.,&Seitz F..(2021).Global coastal attenuation of wind-waves observed with radar altimetry.Nature Communications,12(1).
MLA	Passaro M.,et al."Global coastal attenuation of wind-waves observed with radar altimetry".Nature Communications 12.1(2021).