Interdecadal climate variability and regime‐scale shifts in Pacific North America

A transect of climate sensitive tree ring‐width chronologies from coastal western North America provides a useful proxy index of North Pacific ocean‐atmosphere variability since 1600 AD. Here we use this high‐resolution record to identify intervals of an enhanced interdecadal climate signal in the North Pacific, and to assess the timing and magnitude of abrupt shifts in this system. In the context of this record, the step‐like climate shift that occurred in 1976–1977 is not a unique event, with similar events having occurred frequently during the past 400 years. Furthermore, most of the pre‐instrumental portion of this record is characterized by pronounced interdecadal variability, while the secular portion is more strongly interannual in nature. If the 1976–1977 event marks a return to this mode of variability there may be significant consequences for natural resources management in the North Pacific Sector.

[1]  Z. Gedalof,et al.  Dendroclimatic response of mountain hemlock (Tsuga mertensiana) in Pacific North America , 2001 .

[2]  J. Smol,et al.  Impacts of climatic change and fishing on Pacific salmon abundance over the past 300 years. , 2000, Science.

[3]  O. Podlaha,et al.  TIME SERIES ANALYSES OF TREE RING CHRONOLOGIES FROM PACIFIC NORTH AMERICA:EVIDENCE FOR SUB-CENTURY CLIMATE OSCILLATIONS , 1999 .

[4]  Steven R. Hare,et al.  Inverse Production Regimes: Alaska and West Coast Pacific Salmon , 1999 .

[5]  D. Schrag,et al.  Abrupt shift in subsurface temperatures in the tropical pacific associated with changes in El Nino , 1998, Science.

[6]  R. A. Hinrichsen,et al.  Imminent climate and circulation shift in northeast Pacific Ocean could have major impact on marine resources , 1998 .

[7]  Steven R. Hare,et al.  Effects of interdecadal climate variability on the oceanic ecosystems of the NE Pacific , 1998 .

[8]  G. Jacoby,et al.  Gulf of Alaska Atmosphere-Ocean Variability Over Recent Centuries Inferred from Coastal Tree-Ring Records , 1998 .

[9]  P. Young,et al.  Uncertainty, Complexity and Concepts of Good Science in Climate Change Modelling: Are GCMs the Best Tools? , 1998 .

[10]  C. Torrence,et al.  A Practical Guide to Wavelet Analysis. , 1998 .

[11]  N. Graham,et al.  Decadal Variability of Precipitation over Western North America , 1998 .

[12]  Harold C. Fritts,et al.  The International Tree-Ring Data Bank: an enhanced global database serving the global scientific community , 1997 .

[13]  J. Wallace,et al.  A Pacific Interdecadal Climate Oscillation with Impacts on Salmon Production , 1997 .

[14]  Shoshiro Minobe,et al.  A 50–70 year climatic oscillation over the North Pacific and North America , 1997 .

[15]  G. Jacoby,et al.  Temperature changes along the Gulf of Alaska and the Pacific Northwest coast modeled from coastal tree rings , 1996 .

[16]  D. Ware.  A century and a half of change in the climate of the NE Pacific , 1995 .

[17]  Edward R. Cook,et al.  The 'segment length curse' in long tree-ring chronology development for palaeoclimatic studies , 1995 .

[18]  P. Jones,et al.  Tree-Ring Density Reconstructions of Summer Temperature Patterns across Western North America since 1600 , 1992 .

[19]  M. Ghil,et al.  Interdecadal oscillations and the warming trend in global temperature time series , 1991, Nature.

[20]  John M. Wallace,et al.  Large-scale atmospheric circulation features of warm and cold episodes in the tropical Pacific , 1990 .

[21]  E. Cook,et al.  Tree-ring standardization and growth-trend estimation , 1990 .

[22]  D. Cayan,et al.  The Influence of North Pacific Atmospheric Circulation on Streamflow in the West , 2013 .

[23]  D. C. West,et al.  DENDROCLIMATIC CALIBRATION AND VERIFICATION USING REGIONALLY AVERAGED AND SINGLE STATION PRECIPITATION DATA , 1981 .

[24]  H. Fritts,et al.  Tree Rings and Climate. , 1978 .

[25]  George E. P. Box,et al.  Intervention Analysis with Applications to Economic and Environmental Problems , 1975 .