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RISHow Topographic Smoothing Contributes to Differences between the Eddy Flows Simulated by Sigma- and Geopotential-Coordinate Models
Publisher: American Meteorological Society
Abstract: The characteristics of the mesoscale turbulence simulated at a resolution of ?° by a sigma-coordinate model (SPEM) and a geopotential-coordinate model (OPA) of the South Atlantic differ significantly. These two types of ...
Intrinsic Variability of the Atlantic Meridional Overturning Circulation at Interannual-to-Multidecadal Time Scales
Publisher: American Meteorological Society
Abstract: he low-frequency variability of the Atlantic meridional overturning circulation (AMOC) is investigated from 2, ¼°, and ° global ocean?sea ice simulations, with a specific focus on its internally generated (i.e., ?intrinsic?) ...
Mesoscale Eddies in the Labrador Sea and Their Contribution to Convection and Restratification
Publisher: American Meteorological Society
Abstract: The cycle of open ocean deep convection in the Labrador Sea is studied in a realistic, high-resolution (4 km) regional model, embedded in a coarser (?°) North Atlantic setup. This configuration allows the simultaneous ...
Dynamical Response of the Oceanic Eddy Field to the North Atlantic Oscillation: A Model–Data Comparison
Publisher: American Meteorological Society
Abstract: Observational studies have shown that in many regions of the World Ocean the eddy kinetic energy (EKE) significantly varies on interannual time scales. Comparing altimeter-derived EKE maps for 1993 and 1996, Stammer and ...
An Adaptive Optimal Interpolation Based on Analog Forecasting: Application to SSH in the Gulf of Mexico
Publisher: American Meteorological Society
Abstract: Because of the irregular sampling pattern of raw altimeter data, many oceanographic applications rely on information from sea surface height (SSH) products gridded on regular grids where gaps have been filled with ...
Intrinsic Variability of Sea Level from Global Ocean Simulations: Spatiotemporal Scales
Publisher: American Meteorological Society
Abstract: n high-resolution ocean general circulation models (OGCMs), as in process-oriented models, a substantial amount of interannual to decadal variability is generated spontaneously by oceanic nonlinearities: that is, without ...
Inverse Cascades of Kinetic Energy as a Source of Intrinsic Variability: A Global OGCM Study
Publisher: American Meteorological Society
Abstract: AbstractA seasonally forced 1/12° global ocean/sea ice simulation is used to characterize the spatiotemporal inverse cascade of kinetic energy (KE). Nonlinear scale interactions associated with relative vorticity advection ...
Thermodynamical Effects of Ocean Current Feedback in a Quasigeostrophic Coupled Model
Publisher: American Meteorological Society
Sea Level Expression of Intrinsic and Forced Ocean Variabilities at Interannual Time Scales
Publisher: American Meteorological Society
Abstract: his paper evaluates in a realistic context the local contributions of direct atmospheric forcing and intrinsic oceanic processes on interannual sea level anomalies (SLAs). A ¼° global ocean?sea ice general circulation ...
Intrinsic and Atmospherically Forced Variability of the AMOC: Insights from a Large-Ensemble Ocean Hindcast
Publisher: American Meteorological Society
Abstract: AbstractThis study investigates the origin and features of interannual?decadal Atlantic meridional overturning circulation (AMOC) variability from several ocean simulations, including a large (50 member) ensemble of global, ...