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Multiple Convection Patterns and Thermohaline Flow in an Idealized OGCM
Publisher: American Meteorological Society
Abstract: This paper investigates how multiple steady states arise in an ocean general circulation model, caused by the fact that many different convection patterns can be stable under the same surface boundary conditions. Two ...
Comments on “Instability of the Thermohaline Circulation with Respect to Mixed Boundary Conditions: Is It Really a Problem for Realistic Models?”
Publisher: American Meteorological Society
Abstract: This comment discusses two issues raised by a recent study of the stability of the thermohaline circulation (Tziperman et al.). A numerical problem is pointed out that may have affected the results of the reported calculations. ...
The Role of Temperature Feedback in Stabilizing the Thermohaline Circulation
Publisher: American Meteorological Society
Abstract: Ocean climate models traditionally compute the surface heat flux with a restoring boundary condition of the form Q = ?(T* ? To). This implies an atmosphere of fixed temperature and breaks down when large-scale changes in ...
Simple Theoretical Model May Explain Apparent Climate Instability
Publisher: American Meteorological Society
Abstract: The authors propose a simple theory to explain a climatic drift previously found in a series of coupled general circulation model (GCM) experiments. Their theory places the GCM results on a simple stability diagram for the ...
Influence of Southern Hemisphere Winds on North Atlantic Deep Water Flow
Publisher: American Meteorological Society
Abstract: A series of experiments with a hybrid model (ocean circulation model with simple atmospheric feedback model) and an ocean-only model is used to study the sensitivity of the ocean?s deep overturning circulation to Southern ...
Sensitivity of Ventilation Rates and Radiocarbon Uptake to Subgrid-Scale Mixing in Ocean Models
Publisher: American Meteorological Society
Abstract: The sensitivity of ventilation timescales and radiocarbon (14C) uptake to subgrid-scale mixing parameterization is studied in a global ocean model. Seven experiments are examined that are identical in every manner except ...
On the Origin of the Surface Air Temperature Difference between the Hemispheres in Earth's Present-Day Climate
Publisher: American Meteorological Society
Abstract: n today's climate, the annually averaged surface air temperature in the Northern Hemisphere (NH) is 1°?2°C higher than in the Southern Hemisphere (SH). Historically, this interhemispheric temperature difference has been ...
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