Journal ArticleDOI
Empirical evidence for North Pacific regime shifts in 1977 and 1989
Steven R. Hare,Nathan J. Mantua +1 more
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In this paper, the authors used 100 environmental time series, 31 climatic and 69 biological, to determine if there is evidence for common regime signals in the 1965-1997 period of record.About:
This article is published in Progress in Oceanography.The article was published on 2000-10-01. It has received 1500 citations till now. The article focuses on the topics: Regime shift & Marine ecosystem.read more
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Zooplankton communities in the Strait of Georgia, British Columbia, track large-scale climate forcing over the Pacific Ocean
Lingbo Li,Dave Mackas,Brian P. V. Hunt,Jake Schweigert,Evgeny A. Pakhomov,R. Ian Perry,Moira Galbraith,Tony J. Pitcher +7 more
TL;DR: In this article, a combination of cluster analysis, non-metric multi-dimensional scaling and principal component analysis (PCA) was used to identify 10 major taxa and investigate interannual changes for September and June.
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Influences of atmospheric variability on freshwater input in Galician Rías in winter
M. N. Lorenzo,J. J. Taboada +1 more
TL;DR: In this paper, the influence of the preferred modes of variation of the atmosphere in the North Hemisphere on the precipitation variability was evaluated in Galicia (NW Iberian Peninsula) by calculating the correlation between the precipitation data obtained from 47 rain-gauge stations covering Galicia from 1977 to 1998 and the five principal teleconnection patterns on the Atlantic area of North Hemisphere.
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Characterizing global CO2 interannual variability with empirical orthogonal function/principal component (EOF/PC) analysis
TL;DR: In this article, the authors applied low-pass filtered deseasonalized CO2 growth rates from a global observational network, and two statistically significant modes of interannual variability are identified.
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Variability in scale growth rates of chum salmon (Oncorhynchus keta) in relation to climate changes in the late 1980s
TL;DR: Fish scales were used to investigate the interannual variability in chum salmon growth rates at specific ages in relation to climatic/environmental changes during the 1980s–1990s, suggesting that the climate regime shift of 1988/1989 in the subarctic North Pacific affected salmon growth mediated by changes of zooplankton biomass.
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Non-stationary seabird responses reveal shifting ENSO dynamics in the northeast Pacific
Annie E. Schmidt,Annie E. Schmidt,Louis W. Botsford,John M. Eadie,Russell W. Bradley,Emanuele Di Lorenzo,Jaime Jahncke +6 more
TL;DR: In this article, the authors examined ocean conditions and seabird reproductive success in central California and found that the way these physical factors affect the pelagic food web is also changing, which is a concern since predictions of future ecosystem productivity and effects of climate change rely on the assumption that a species' response to environmental conditions is consistent over time.
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A Pacific interdecadal climate oscillation with impacts on salmon production
TL;DR: In this article, the authors identify a robust, recurring pattern of ocean-atmosphere climate variability centered over the midlatitude North Pacific basin over the past century, the amplitude of this climate pattern has varied irregularly at interannual-to-interdecadal timescales.
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The Arctic oscillation signature in the wintertime geopotential height and temperature fields
TL;DR: The Arctic Oscillation (AO) as mentioned in this paper is the signature of modulations in the strength of the polar vortex aloft, and it resembles the NAO in many respects; but its primary center of action covers more of the Arctic, giving it a more zonally symmetric appearance.
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Teleconnections in the Geopotential Height Field during the Northern Hemisphere Winter
John M. Wallace,David S. Gutzler +1 more
TL;DR: In this paper, a review of existing literature on the subject reveals the existence of at least four such patterns: the North Atlantic and North Pacific Oscillations identified by Walker and Bliss (1932), a zonally symmetric seesaw between sea level pressures in polar and temperature latitudes, first noted by Lorenz (1951), and what we will refer to as the Pacific/North American pattern, which has been known to operational long-range forecasters in this country since the 1950's.
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Statistical Analysis in Climate Research
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Classification, seasonality and persistence of low-frequency atmospheric circulation patterns
TL;DR: In this article, Orthogonally rotated principle component analysis (RPCA) was used to identify and describe the seasonality and persistence of the major modes of interannual variability.