North Atlantic MOC variability and the Mediterranean Outflow: A box-model study

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Abstract

A simple box-model is used to investigate the effect of intermediate level heat/freshwater fluxes on the variability of the oceanic meridional overturning circulation. The model includes a simple representation of the spreading of the Mediterranean Outflow Water in the North Atlantic. We identify an internal advective feedback affecting the amplitude of the thermohaline ascillations. When a salinity gradient is maintained in the ocean interior the oscillations are implified. Instead, if the intermediate level fluxes are spread in the ocean deep layers, the model variability is reduced. We suggest that this mechanism may be relevant for climate variability on interdecadal timescales. Copyright © Blackwell Munksgaard, 2006.
Original languageEnglish
Pages (from-to)416 - 423
Number of pages8
JournalTellus, Series A: Dynamic Meteorology and Oceanography
Volume58
Issue number3
DOIs
Publication statusPublished - May 2006
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Oceanography
  • Atmospheric Science

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