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RISTheoretical Investigation of the Atlantic Multidecadal Oscillation
Publisher: American Meteorological Society
Abstract: weakly damped mode of variability, corresponding to the oceanic signature of the Atlantic multidecadal oscillation (AMO) was found through the linear stability analysis of a realistic ocean general circulation model. A ...
Geostrophic Closure of the Zonally Averaged Atlantic Meridional Overturning Circulation
Publisher: American Meteorological Society
Abstract: t is typically assumed that the meridional density gradient in the North Atlantic is well and positively correlated with the Atlantic meridional overturning circulation (AMOC). In numerical ?water-hosing? experiments, for ...
Predictability and Decadal Variability of the North Atlantic Ocean State Evaluated from a Realistic Ocean Model
Publisher: American Meteorological Society
Abstract: AbstractThis study investigates the excitation of decadal variability and predictability of the ocean climate state in the North Atlantic. Specifically, initial linear optimal perturbations (LOPs) in temperature and salinity ...
Millennial Variability in an Idealized Ocean Model: Predicting the AMOC Regime Shifts
Publisher: American Meteorological Society
Abstract: salient feature of paleorecords of the last glacial interval in the North Atlantic is pronounced millennial variability, commonly known as Dansgaard?Oeschger events. It is believed that these events are related to variations ...
The Leading, Interdecadal Eigenmode of the Atlantic Meridional Overturning Circulation in a Realistic Ocean Model
Publisher: American Meteorological Society
Abstract: ariations in the strength of the Atlantic meridional overturning circulation (AMOC) are a major potential source of decadal and longer climate variability in the Atlantic. This study analyzes continuous integrations of ...
Model Bias Reduction and the Limits of Oceanic Decadal Predictability: Importance of the Deep Ocean
Publisher: American Meteorological Society
Abstract: cean general circulation models (GCMs), as part of comprehensive climate models, are extensively used for experimental decadal climate prediction. Understanding the limits of decadal ocean predictability is critical for ...
Multidecadal Variability of the Overturning Circulation in Presence of Eddy Turbulence
Publisher: American Meteorological Society
Abstract: t low-resolution, idealized ocean circulation models forced by prescribed differential surface heat fluxes show spontaneous multidecadal variability depending critically on eddy diffusivity coefficients. The existence of ...
Optimal Surface Salinity Perturbations Influencing the Thermohaline Circulation
Publisher: American Meteorological Society
Abstract: Optimal surface salinity perturbations influencing the meridional overturning circulation maximum are exhibited and interpreted on a stable steady state of a 2D latitude?depth ocean thermohaline circulation model. Despite ...
The Mechanisms of the Atlantic Meridional Overturning Circulation Slowdown Induced by Arctic Sea Ice Decline
Publisher: American Meteorological Society
Abstract: We explore the mechanisms by which Arctic sea ice decline affects the Atlantic meridional overturning circulation (AMOC) in a suite of numerical experiments perturbing the Arctic sea ice radiative budget within a fully ...
Nonnormal Multidecadal Response of the Thermohaline Circulation Induced by Optimal Surface Salinity Perturbations
Publisher: American Meteorological Society
Abstract: Optimal perturbations of sea surface salinity are obtained for an idealized North Atlantic basin using a 3D planetary geostrophic model?optimality is defined with respect to the intensity of the meridional overturning ...