Stability of the Atlantic Overturning Circulation: Competition between Bering Strait Freshwater Flux and Agulhas Heat and Salt Sources
نویسندگان
چکیده
منابع مشابه
Corrigendum: Recent increases in Arctic freshwater flux affects Labrador Sea convection and Atlantic overturning circulation
The Atlantic Meridional Overturning Circulation (AMOC) is an important component of ocean thermohaline circulation. Melting of Greenland's ice sheet is freshening the North Atlantic; however, whether the augmented freshwater flux is disrupting the AMOC is unclear. Dense Labrador Sea Water (LSW), formed by winter cooling of saline North Atlantic water and subsequent convection, is a key componen...
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Oceanic and atmospheric freshwater transports are analyzed in a numerical experiment where induced freshwater in the North Atlantic slowed the thermohaline circulation (THC). During times of weak Atlantic overturning circulation, it is found that the Intertropical Convergence Zone moves southward and trade winds at tropical latitudes increase, resulting in enhanced water vapor export out of the...
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Recent measurements of the strength of the Atlantic overturning circulation at 26∘N show a 1 year drop and partial recovery amid a gradual weakening. To examine the extent and impact of the slowdown on basin wide heat and freshwater transports for 2004–2012, a box model that assimilates hydrographic and satellite observations is used to estimate heat transport and freshwater convergence as resi...
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As a key persistent component of the atmospheric dynamics, the North Atlantic blocking activity has been linked to extreme climatic phenomena in the European sector. It has also been linked to Atlantic multidecadal ocean variability, but its potential links to rapid oceanic changes have not been investigated. Using a global ocean-sea ice model forced with atmospheric reanalysis data, here it is...
متن کاملEstimated Decadal Changes in the North Atlantic Meridional Overturning Circulation and Heat Flux 1993–2004
Results from a global 1° model constrained by least squares to a multiplicity of datasets over the interval 1992–2004 are used to describe apparent changes in the North Atlantic Ocean meridional overturning circulation and associated heat fluxes at 26°N. The least squares fit is both stable and adequately close to the data to make the analysis worthwhile. Changes over the 12 yr are spatially an...
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ژورنال
عنوان ژورنال: Journal of Physical Oceanography
سال: 2001
ISSN: 0022-3670,1520-0485
DOI: 10.1175/1520-0485(2001)031<2385:sotaoc>2.0.co;2