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Please use this identifier to cite or link to this item: http://hdl.handle.net/1956/630

Title: Simulated variability of the Atlantic meridional overturning circulation
Authors: Bentsen, Mats
Drange, Helge
Furevik, Tore
Zhou, Tianjun
Issue Date: 17-Apr-2004
Publisher: Springer-Verlag
Citation: http://www.springerlink.com/openurl.asp?genre=article&issn=0930-7575&volume=22&issue=6&spage=701
Series/Report no.: Climate Dynamics;22(6/7)
Abstract: To examine the multi-annual to decadal scale variability of the Atlantic Meridional Overturning Circulation (AMOC), a four-member ensemble with a daily reanalysis forced, medium-resolution global version of the isopycnic coordinate ocean model MICOM, and a 300-years integration with the fully coupled Bergen Climate Model (BCM), have been conducted. The simulations of the AMOC with both model systems yield a long-term mean value of 18 Sv and decadal variability with an amplitude of 1–3 Sv. The power spectrum of the inter-annual to decadal scale variability of the AMOC in BCM generally follows the theoretical red noise spectrum, with indications of increased power near the 20-years period. Comparison with observational proxy indices for the AMOC, e.g. the thickness of the Labrador Sea Water, the strength of the baroclinic gyre circulation in the North Atlantic Ocean, and the surface temperature anomalies along the mean path of the Gulf Stream, shows similar trends and phasing...
URI: DOI: 10.1007/s00382-004-0397-x
http://hdl.handle.net/1956/630
ISSN: 0930-7575
Appears in Collections:Eprints by Nansen Environmental and Remote Sensing Center (NERSC)

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