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Parallel decadal variability of inferred water temperatures for Northern and Southern Hemisphere intermediate water masses

Citation

Thresher, R and Morrongiello, J and Sloyan, BM and Krusic-Golub, K and Shephard, S and Minto, C and Nolan, CP and Cerna, F and Cid, L, Parallel decadal variability of inferred water temperatures for Northern and Southern Hemisphere intermediate water masses, Geophysical Research Letters, 41, (4) pp. 1232-1237. ISSN 0094-8276 (2014) [Refereed Article]


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Copyright Statement

2014. American Geophysical Union

DOI: doi:10.1002/2013GL058638

Abstract

We use a novel proxy (growth rates of long-lived deep water fish, orange roughy) to reconstruct inferred water temperatures of intermediate water masses in both Northern and Southern Hemispheres since the mid-1800s. The data are consistent with instrumental records showing long-term warming in the Northern Hemisphere but also indicate decadal variability of intermediate depth temperatures that is coherent across the two hemispheres. This variability correlates with the dominant subpolar annular mode in each hemisphere and implies a bihemispheric oceanic response to external forcing that influences the properties of intermediate depth water masses.

Item Details

Item Type:Refereed Article
Keywords:Antarctic intermediate water, Arctic Oscillation Index, North Atlantic oscillation, otolith, southern annular mode, sub-polar mode water
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Physical Oceanography
Objective Division:Environment
Objective Group:Other Environment
Objective Field:Marine Oceanic Processes (excl. climate related)
Author:Sloyan, BM (Dr Bernadette Sloyan)
ID Code:119444
Year Published:2014
Web of Science® Times Cited:5
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2017-08-01
Last Modified:2017-09-22
Downloads:4 View Download Statistics

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