Recently added articles from Journal of Physical Oceanography:
Western Arctic Shelfbreak Eddies: Formation and Transport
Aug 01, 2008; Spall, Michael A; Pickart, Robert S; Fratantoni, Paula S; Plueddemann, Albert J ... ABSTRACT The mean structure and time-dependent behavior of the shelfbreak jet along the southern Beaufort Sea, and its ability to transport properties into the basin interior via eddies are explored using high-resolution mooring data and an idealized numerical model. The analysis focuses ...
Boils and Turbulence in a Weakly Stratified Shallow Tidal Sea
Aug 01, 2008; Thorpe, S A; Green, J A M; Simpson, J H; Osborn, T R; Smith, W A M Nimmo ... ABSTRACT Measurements of turbulence are made in a weakly but variably stratified region of tidal straining in the eastern Irish Sea using turbulence sensors profiling vertically through the water column on the Fast Light Yo-yo (FLY) profiler and horizontally on the Autonomous Underwater ...
Upper Ocean Turbulence from High-Resolution 3D Simulations
Aug 01, 2008; Klein, Patrice; Hua, Bach Lien; Lapeyre, Guillaume; Capet, Xavier; Gentil, Sylvie Le; Sasaki, Hideharu ... ABSTRACT The authors examine the turbulent properties of a baroclinically unstable oceanic flow using primitive equation (PE) simulations with high resolution (in both horizontal and vertical directions). Resulting dynamics in the surface layers involve large Rossby numbers and ...
Variability at Intermediate Depths at the Equator in the Atlantic Ocean in 2000-06: Annual Cycle, Equatorial Deep Jets, and Intraseasonal Meridional Velocity Fluctuations
Aug 01, 2008; Bunge, Lucia; Provost, Christine; Hua, Bach Lien; Kartavtseff, Annie ... ABSTRACT Time series of high vertical resolution current meter measurements between 600-m and 1800-m depths on the equator in the Atlantic were obtained at two locations, 10° and 23°W. The measurements have a time span of almost 7 years (2000-06) and provide insights into the temporal ...
Variability and Linkages of New Guinea Coastal Undercurrent and Lower Equatorial Intermediate Current
Aug 01, 2008; Kawabe, Masaki; Kashino, Yuji; Kuroda, Yoshifumi ... ABSTRACT Velocity at depths of 700-800 m was measured between September 1998 and October 2002 at 2.5°S, 142°E off the New Guinea coast and at 0°, 138°E to examine the New Guinea Coastal Undercurrent (NGCUC) and the current on the equator carrying Antarctic Intermediate Water (AAIW) ....
The Kuroshio Extension Northern Recirculation Gyre: Profiling Float Measurements and Forcing Mechanism
Aug 01, 2008; Qiu, Bo; Chen, Shuiming; Hacker, Peter; Hogg, Nelson G; Jayne, Steven R; Sasaki, Hideharu ... ABSTRACT Middepth, time-mean circulation in the western North Pacific Ocean (28°-45°N, 140°-165°E) is investigated using drift information from the profiling floats deployed in the Kuroshio Extension System Study (KESS) and the International Argo programs. A well-defined, cyclonic ...
Permanent Meanders in the California Current System
Aug 01, 2008; Centurioni, L R; Ohlmann, J C; Niiler, P P ... ABSTRACT Surface Velocity Program (SVP) drifter data from 1987 through 2005; Archiving, Validation, and Interpretation of Satellite Oceanographic data (AVISO) sea level anomalies; and NCEP reanalysis winds are used to assemble a time-averaged map of the 15-m-deep geostrophic velocity ...
Observations of the Dispersion Characteristics and Meridional Sea Level Structure of Equatorial Waves in the Pacific Ocean
Aug 01, 2008; Farrar, J Thomas ... ABSTRACT Spectral techniques applied to altimetry data are used to examine the dispersion relation and meridional sea level structure of wavelike variability with periods of about 20 to 200 days in the equatorial Pacific Ocean. Zonal wavenumber-frequency power spectra of sea surface ...
Physics of "Saturation-Based" Dissipation Functions Proposed for Wave Forecast Models
Aug 01, 2008; Babanin, Alexander V; van der Westhuysen, André J ... ABSTRACT The dissipation term is one of the three most important source functions of the radiative transfer equation employed by all spectral wave models to predict the wave spectrum. In this paper, the issue of physics of such dissipation functions is discussed. It is argued that the ...
Mesoscale Eddies in the Labrador Sea and Their Contribution to Convection and Restratification
Aug 01, 2008; Chanut, Jérôme; Barnier, Bernard; Large, William; Debreu, Laurent; Penduff, Thierry; Molines, Jean Marc; Mathiot, Pierre ... 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 (1/3°) North Atlantic setup. This configuration allows the simultaneous generation and evolution of three different eddy types that ...
Optimal Surface Excitation of the Thermohaline Circulation
Aug 01, 2008; Zanna, Laure; Tziperman, Eli ... ABSTRACT The amplification of thermohaline circulation (THC) anomalies resulting from heat and freshwater forcing at the ocean surface is investigated in a zonally averaged coupled ocean-atmosphere model. Optimal initial conditions of surface temperature and salinity leading to the ...
Decadal Sea Level Variability in the South Pacific in a Global Eddy-Resolving Ocean Model Hindcast
Aug 01, 2008; Sasaki, Yoshi N; Minobe, Shoshiro; Schneider, Niklas; Kagimoto, Takashi; Nonaka, Masami; Sasaki, Hideharu ... ABSTRACT Sea level variability and related oceanic changes in the South Pacific from 1970 to 2003 are investigated using a hindcast simulation of an eddy-resolving ocean general circulation model (OGCM) for the Earth Simulator (OFES), along with sea level data from tide gauges since 1970 ...
An Energy-Constrained Parameterization of Eddy Buoyancy Flux
Aug 01, 2008; Cessi, Paola ... ABSTRACT A parameterization for eddy buoyancy fluxes for use in coarse-grid models is developed and tested against eddy-resolving simulations. The development is based on the assumption that the eddies are adiabatic (except near the surface) and the observation that the flux of buoyancy ...