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RISAn Exploration of the Role of Transient Eddies in Determining the Transport of a Zonally Reentrant Current
Publisher: American Meteorological Society
Abstract: The meridional Ekman transport in a zonally reentrant channel may be balanced by diabatic circulations, standing eddies associated with topography, or by Lagrangian mean eddy mass fluxes. A simple model is used to explore ...
The Role of Eddies in Determining the Structure and Response of the Wind-Driven Southern Hemisphere Overturning: Results from the Modeling Eddies in the Southern Ocean (MESO) Project
Publisher: American Meteorological Society
Abstract: The Modeling Eddies in the Southern Ocean (MESO) project uses numerical sensitivity studies to examine the role played by Southern Ocean winds and eddies in determining the density structure of the global ocean and the ...
Ocean Water Clarity and the Ocean General Circulation in a Coupled Climate Model
Publisher: American Meteorological Society
Abstract: Ocean water clarity affects the distribution of shortwave heating in the water column. In a one-dimensional time-mean sense, increased clarity would be expected to cool the surface and heat subsurface depths as shortwave ...
Understanding Multidecadal Variability in ENSO Amplitude
Publisher: American Meteorological Society
Abstract: ea surface temperatures (SSTs) in the tropical Pacific vary as a result of the coupling between ocean and atmosphere driven largely by El Niño?Southern Oscillation (ENSO). ENSO amplitude is known to vary on long time scales, ...
Structure and Instability of the Ekman Spiral in the Presence of Surface Gravity Waves
Publisher: American Meteorological Society
Abstract: The physical processes responsible for maintaining the mixed layer am examined by considering the velocity structure. The low-frequency Ekman response in the interior of unstratified mixed layers is much less sheared than ...
Transient Response in a Z-Level Ocean Model That Resolves Topography with Partial Cells
Publisher: American Meteorological Society
Abstract: Ocean simulations are in part determined by topographic waves with speeds and spatial scales dependent on bottom slope. By their very nature, discrete z-level ocean models have problems accurately representing bottom ...
On the Relationship of the Circumpolar Current to Southern Hemisphere Winds in Coarse-Resolution Ocean Models
Publisher: American Meteorological Society
Abstract: The response of the Circumpolar Current to changing winds has been the subject of much debate. To date most theories of the current have tried to predict the transport using various forms of momentum balance. This paper ...
Effects of Saturated and Dry Land Surfaces on the Tropical Circulation and Precipitation in a General Circulation Model
Publisher: American Meteorological Society
Abstract: A comprehensive rhomboidal-15 general circulation model with idealized boundary conditions is used to investigate the effects of interactions between the tropical circulation and continental climate on the precipitation ...
Global Atmospheric Teleconnections and Multidecadal Climate Oscillations Driven by Southern Ocean Convection
Publisher: American Meteorological Society
Abstract: AbstractA 1000-yr control simulation in a low-resolution coupled atmosphere?ocean model from the Geophysical Fluid Dynamics Laboratory (GFDL) family of climate models shows a natural, highly regular multidecadal oscillation ...
Large-Scale Oceanographic Constraints on the Distribution of Melting and Freezing under Ice Shelves
Publisher: American Meteorological Society
Abstract: Previous studies suggest that ice shelves experience asymmetric melting and freezing. Topography may constrain oceanic circulation (and thus basal melt?freeze patterns) through its influence on the potential vorticity (PV) ...