Return to CIG


View All Publications

Go To Publication by Year:

View Publications by Topic:



Air Quality

Aquatic Ecosystems and Fisheries

Background Papers

Climate: Atmospheric Modeling

Climate: Coupled Atmosphere-Ocean Modeling

Climate: Diagnostics

Climate: Global Climate

Climate: Ocean Modeling

Climate: PNW Climate

Climate: Regional Climate Modeling

Coastal Ecosystems

Coastal Environments

Conservation Biology

Data Analysis and Sharing


Fact Sheets

Forecasts and Applications

Forest Ecosystems

Human Health

Hydrology and Water Resources


Integrated Assessment

Ocean Acidification


Program Documents

Science Advisory Reports

Societal Dimensions

Special Reports

Theses and Dissertations

View Publications by Author:

Search the Publication Abstracts:

Other CSES Links:

About CSES

CSES Personnel

Data / Links


Welcome to the publications directory for the Climate Impacts Group and the Climate Dynamics Group. Please contact the web administrator for assistance with any of these publications.

View: Abstract

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

Gedalof, Z.M., and D.J. Smith. 2001. Interdecadal climate variability and regime-scale shifts in Pacific North America. Geophysical Research Letters 28:1515-1518.


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.