Global scale decadal climate variability
Analysis of observations and results from a global coupled climate model show that coherent decadal climate variability extends over the entire Pacific basin, is associated with processes in the Atlantic and Indian Ocean regions to contribute to global patterns of decadal climate variability, and en...
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Published in | Geophysical research letters Vol. 25; no. 21; pp. 3983 - 3986 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Washington, DC
Blackwell Publishing Ltd
01.11.1998
American Geophysical Union |
Subjects | |
Online Access | Get full text |
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Summary: | Analysis of observations and results from a global coupled climate model show that coherent decadal climate variability extends over the entire Pacific basin, is associated with processes in the Atlantic and Indian Ocean regions to contribute to global patterns of decadal climate variability, and encompasses regional decadal mechanisms noted in previous studies. Ocean heat content anomalies embedded in the gyre circulations of the Pacific, Atlantic and Indian Oceans are associated with global decadal timescale “El Niño‐like” signals in atmosphere and ocean with consequent global energy balance variations. Large‐scale tropical‐midlatitude interactions act to replenish the ocean heat content anomalies. Maxima in decadal timescale globally averaged surface temperature occur in conjunction with periodic arrangements of SST anomalies, in association with the heat content anomalies embedded in the various ocean gyre circulations, in a global “El Niño‐like” pattern that is highly correlated with such maxima. The decadal timescale in the model is approximately set by the circuit times of the ocean gyre circulations. |
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Bibliography: | istex:0EA3785BBF76D0928FF2C0B5BBABB6B1577CB10D ark:/67375/WNG-5JBK17N3-4 ArticleID:1998GL900088 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0094-8276 1944-8007 |
DOI: | 10.1029/1998GL900088 |