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Temporal variability of the Atlantic meridional overturning circulation at 26.5 degrees N.
MedLine Citation:
PMID:  17702940     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
The vigor of Atlantic meridional overturning circulation (MOC) is thought to be vulnerable to global warming, but its short-term temporal variability is unknown so changes inferred from sparse observations on the decadal time scale of recent climate change are uncertain. We combine continuous measurements of the MOC (beginning in 2004) using the purposefully designed transatlantic Rapid Climate Change array of moored instruments deployed along 26.5 degrees N, with time series of Gulf Stream transport and surface-layer Ekman transport to quantify its intra-annual variability. The year-long average overturning is 18.7 +/- 5.6 sverdrups (Sv) (range: 4.0 to 34.9 Sv, where 1 Sv = a flow of ocean water of 10(6) cubic meters per second). Interannual changes in the overturning can be monitored with a resolution of 1.5 Sv.
Authors:
Stuart A Cunningham; Torsten Kanzow; Darren Rayner; Molly O Baringer; William E Johns; Jochem Marotzke; Hannah R Longworth; Elizabeth M Grant; Joël J-M Hirschi; Lisa M Beal; Christopher S Meinen; Harry L Bryden
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  317     ISSN:  1095-9203     ISO Abbreviation:  Science     Publication Date:  2007 Aug 
Date Detail:
Created Date:  2007-08-17     Completed Date:  2007-09-05     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  935-8     Citation Subset:  -    
Affiliation:
National Oceanography Centre, Empress Dock, Southampton SO14 3ZH, UK. scu@noc.soton.ac.uk
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Comment In:
Science. 2007 Aug 17;317(5840):908-9   [PMID:  17702934 ]

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