气候变化领域集成服务门户(CCPortal): Australian blocking impacts on ocean surface waves

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DOI	10.1007/s00382-019-05058-8
	Australian blocking impacts on ocean surface waves
	Marshall A.G.; Hemer M.A.; McInnes K.L.
发表日期	2020
ISSN	0930-7575
起始页码	1281
结束页码	1294
卷号	54
英文摘要	We assess the impact of split-flow blocking in the Australian region on global ocean wind waves using 30 years of high-resolution wave data from the CAWCR wave model hindcast. Statistically significant anomalies in significant wave height (Hs), peak wave period (Tp) and zonal wave energy flux (CgE) are found to covary with local variations in surface zonal wind induced by blocking at 140° E. Strong negative anomalies in these wave fields highlight the role of blocking in promoting calm wave conditions around the Australian coast. A relatively weak but notable remote signal also appears in the Northern Hemisphere extratropics, suggesting a link to the Australian region via tropical forcing. The occurrence of daily low (below the 5th percentile) and high (above the 95th percentile) wave conditions also varies contemporaneously with blocking at 140° E. Considering the ability of global circulation model forecasts to skilfully predict the blocking index out to at least 2 weeks lead time, our results point to blocking as a possible source of predictable wind-wave variability from sub-weekly to seasonal timescales. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
语种	英语
scopus关键词	sea surface; seasonal variation; surface wave; wave height; wind wave; zonal flow; zonal wind; Australia
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145641
作者单位	Bureau of Meteorology, Hobart, TAS, Australia; CSIRO Oceans and Atmosphere, Hobart, TAS, Australia; CSIRO Oceans and Atmosphere, Aspendale, VIC, Australia
推荐引用方式 GB/T 7714	Marshall A.G.,Hemer M.A.,McInnes K.L.. Australian blocking impacts on ocean surface waves[J],2020,54.
APA	Marshall A.G.,Hemer M.A.,&McInnes K.L..(2020).Australian blocking impacts on ocean surface waves.Climate Dynamics,54.
MLA	Marshall A.G.,et al."Australian blocking impacts on ocean surface waves".Climate Dynamics 54(2020).