Temporal Variability of the Atlantic Meridional Overturning Circulation at 26.5°N-Reference-Cited by-同舟云学术

Temporal Variability of the Atlantic Meridional Overturning Circulation at 26.5°N

Published:2007-08-17 Issue:5840 Volume:317 Page:935-938
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Cunningham Stuart A.¹²³⁴,Kanzow Torsten¹²³⁴,Rayner Darren¹²³⁴,Baringer Molly O.¹²³⁴,Johns William E.¹²³⁴,Marotzke Jochem¹²³⁴,Longworth Hannah R.¹²³⁴,Grant Elizabeth M.¹²³⁴,Hirschi Joël J.-M.¹²³⁴,Beal Lisa M.¹²³⁴,Meinen Christopher S.¹²³⁴,Bryden Harry L.¹²³⁴

Affiliation:

1. National Oceanography Centre, Empress Dock, Southampton SO14 3ZH, UK.

2. National Oceanic and Atmospheric Administration (NOAA)–Atlantic Oceanographic and Meteorological Laboratory (AOML)/Physical Oceanography Division, 4301 Rickenbacker Causeway, Miami, FL 33149, USA.

3. Rosenstiel School of Marine and Atmospheric Sciences (RSMAS), University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149, USA.

4. Max Planck Institute for Meteorology, Bundesstrasse 53, D-20146 Hamburg, Germany.

Abstract

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°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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference26 articles.

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3. RAPID is a directed program of the Natural Environment Research Council (NERC). The project to monitor the Atlantic MOC at 26.5°N reported here is a joint UK/US collaboration among the National Oceanography Centre (Southampton) the University of Miami RSMAS and NOAA AOML. This joint effort is known as RAPID-MOC/MOCHA (www.noc.soton.ac.uk/rapidmoc/) where MOCHA stands for Meridional Circulation and Heat Flux Array.

4. Florida current transport AOML www.aoml.noaa.gov/phod/floridacurrent.

5. Sea Winds on QuikSCAT mission http://winds.jpl.nasa.gov/missions/quikscat/index.cfm.

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