气候变化领域集成服务门户(CCPortal): The changing physical and ecological meanings of North Pacific Ocean climate indices

CCPortal

DOI	10.1073/pnas.1921266117
	The changing physical and ecological meanings of North Pacific Ocean climate indices
	Litzow M.A.; Hunsicker M.E.; Bond N.A.; Burke B.J.; Cunningham C.J.; Gosselin J.L.; Norton E.L.; Ward E.J.; Zador S.G.
发表日期	2020
ISSN	0027-8424
起始页码	7665
结束页码	7671
卷号	117 期号:14
英文摘要	Climate change is likely to change the relationships between commonly used climate indices and underlying patterns of climate variability, but this complexity is rarely considered in studies using climate indices. Here, we show that the physical and ecological conditions mapping onto the Pacific Decadal Oscillation (PDO) index and North Pacific Gyre Oscillation (NPGO) index have changed over multidecadal timescales. These changes apparently began around a 1988/1989 North Pacific climate shift that was marked by abrupt northeast Pacific warming, declining temporal variance in the Aleutian Low (a leading atmospheric driver of the PDO), and increasing correlation between the PDO and NPGO patterns. Sea level pressure and surface temperature patterns associated with each climate index changed after 1988/1989, indicating that identical index values reflect different states of basin-scale climate over time. The PDO and NPGO also show time-dependent skill as indices of regional northeast Pacific ecosystem variability. Since the late 1980s, both indices have become less relevant to physical-ecological variability in regional ecosystems from the Bering Sea to the southern California Current. Users of these climate indices should be aware of nonstationary relationships with underlying climate variability within the historical record, and the potential for further nonstationarity with ongoing climate change. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Climate change; Climate index; Nonstationary relationship; North Pacific Gyre Oscillation; Pacific Decadal Oscillation
语种	英语
scopus关键词	article; Bering Sea; California; climate change; ecosystem; North Pacific gyre; oscillation; sea level; skill; warming; atmosphere; Pacific Ocean; Atmosphere; Climate Change; Pacific Ocean
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160997
作者单位	Litzow, M.A., College of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Kodiak, AK 99615, United States; Hunsicker, M.E., Northwest Fisheries Science Center, National Marine Fisheries Service, Newport, OR 97365, United States; Bond, N.A., Joint Institute for the Study of the Atmosphere and Ocean, University of Washington, Seattle, WA 98105, United States; Burke, B.J., Northwest Fisheries Science Center, National Marine Fisheries Service, Seattle, WA 98112, United States; Cunningham, C.J., College of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Juneau, AK 99801, United States; Gosselin, J.L., School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA 98105, United States; Norton, E.L., Joint Institute for the Study of the Atmosphere and Ocean, University of Washington, Seattle, WA 98105, United States; Ward, E.J., Northwest Fisheries Science Center, National Marine Fisheries Service, Seattle, WA 98112, United States; Zador, S.G., Alaska Fisheries S...
推荐引用方式 GB/T 7714	Litzow M.A.,Hunsicker M.E.,Bond N.A.,et al. The changing physical and ecological meanings of North Pacific Ocean climate indices[J],2020,117(14).
APA	Litzow M.A..,Hunsicker M.E..,Bond N.A..,Burke B.J..,Cunningham C.J..,...&Zador S.G..(2020).The changing physical and ecological meanings of North Pacific Ocean climate indices.Proceedings of the National Academy of Sciences of the United States of America,117(14).
MLA	Litzow M.A.,et al."The changing physical and ecological meanings of North Pacific Ocean climate indices".Proceedings of the National Academy of Sciences of the United States of America 117.14(2020).