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RISRecent Variability of the North Atlantic Thermohaline Circulation Inferred from Surface Heat and Freshwater Fluxes
Publisher: American Meteorological Society
Abstract: An annual-mean surface-forced component of the North Atlantic thermohaline circulation (THC) in density space, ?surf(?,σ), is diagnosed from observed surface heat and freshwater fluxes. The climatological mean of ?surf ...
Cabbeling due to Isopycnal Mixing in Isopycnic Coordinate Models
Publisher: American Meteorological Society
Abstract: The cabbeling that arises as a consequence of isopycnal mixing in a North Atlantic model based on MICOM (the Miami Isopycnic Coordinate Model) is quantified. Annually averaged over the model Atlantic, the diapycnal volume ...
Modeling 18° Water Variability
Publisher: American Meteorological Society
Abstract: Variability of 18° Water formation is investigated with an isopycnic-coordinate model of the North Atlantic. A 30-year spinup integration is used as a ?control? experiment in which the upper water column in the Sargasso ...
On the Relationship between the North Atlantic Meridional Overturning Circulation and the Surface-Forced Overturning Streamfunction
Publisher: American Meteorological Society
Abstract: The influence of surface thermohaline forcing on the variability of the Atlantic meridional overturning circulation (MOC) at mid?high latitudes is investigated using output from three Intergovernmental Panel on Climate ...
Diagnosing Water Mass Formation from Air–Sea Fluxes and Surface Mixing
Publisher: American Meteorological Society
Abstract: The formation rate of water masses and its relation to air?sea fluxes and interior mixing are examined in an isopycnic model of the North (and tropical) Atlantic that includes a mixed layer. The diagnostics follow Walin?s ...
An Intercomparison of a Bryan–Cox-Type Ocean Model and an Isopycnic Ocean Model. Part I: The Subpolar Gyre and High-Latitude Processes
Publisher: American Meteorological Society
Abstract: This paper describes a model intercomparison between a Bryan-Cox-type ocean model and an isopycnic-coordinate ocean model. The two models are integrated for 30 years on a domain of the North Atlantic stretching from 20°S ...
An Intercomparison of a Bryan-Cox-Type Ocean Model and an Isopycnic Ocean Model. Part II: The Subtropical Gyre and Meridional Heat Transport
Publisher: American Meteorological Society
Abstract: In a companion paper, two ocean general circulation models were implemented in order to simulate and intercompare the main features of the North Atlantic circulation: the Atlantic Isopycnic Model (AIM) and the Hadley Centre ...
Water Mass Transformation in the Southern Ocean of a Global Isopycnal Coordinate GCM
Publisher: American Meteorological Society
Abstract: A global isopycnal coordinate GCM is used to investigate the processes that drive the meridional circulation, transformation, and interocean exchange of water masses in the Southern Ocean. The noneddy-resolving model (mesh ...
The Surface-Forced Overturning of the North Atlantic: Estimates from Modern Era Atmospheric Reanalysis Datasets
Publisher: American Meteorological Society
Abstract: stimates of the recent mean and time varying water mass transformation rates associated with North Atlantic surface-forced overturning are presented. The estimates are derived from heat and freshwater surface fluxes and ...
Decadal Changes in the South Indian Ocean Thermocline
Publisher: American Meteorological Society
Abstract: A significant change in properties of the thermocline is observed across the whole Indian Ocean 32°S section between 1987 and 2002. This change represents a reversal of the pre-1987 freshening and decreasing oxygen ...