نتایج جستجو برای: ekman current geostrophic current surface wind wind stress

تعداد نتایج: 1837831  

2015
D. G. Ortiz-Suslow B. K. Haus N. J. Williams N. J. M. Laxague A. J. H. M. Reniers H. C. Graber

Coastal waters are an aerodynamically unique environment that has been little explored from an air-sea interaction point of view. Consequently, most studies must assume that open ocean-derived parameterizations of the air-sea momentum flux are representative of the nearshore wind forcing. Observations made at the New River Inlet in North Carolina, during the Riverine and Estuarine Transport exp...

2001
IGOR CHUESHOV JINQIAO DUAN BJÖRN SCHMALFUSS

The two-layer quasigeostrophic flow model is an intermidi-ate system between the single-layer 2D barotropic flow model and the continuously stratified, 3D baroclinic flow model. This model is widely used to investigate basic mechanisms in geophysical flows, such as baro-clinic effects, the Gulf Stream and subtropical gyres. The wind forcing acts only on the top layer. We consider the two-layer ...

2005
Alastair D. Jenkins

Nilsson et al. have recently shown how a velocity field in geostrophic and hydrostatic balance in an f -plane may be diagnosed from prescribed distributions of buoyancy and wind stress, in a basin with closed isobaths. I extend their analysis to cover basins with more complex depth contours, treating in particular the behavior of the flow in the presence of a saddle point.

2012
SHAYNE MCGREGOR AXEL TIMMERMANN NIKLAS SCHNEIDER MALTE F. STUECKER MATTHEW H. ENGLAND

During large El Niño events the westerly wind response to the eastern equatorial Pacific sea surface temperature anomalies (SSTAs) shifts southward during boreal winter and early spring, reaching latitudes of 58–78S. The resulting meridional asymmetry, along with a related seasonal weakening of wind anomalies on the equator are key elements in the termination of strong El Niño events. Using an ...

2005
Alastair D. Jenkins

Nilsson et al. have recently shown how a velocity field in geostrophic and hydrostatic balance in an f -plane may be diagnosed from prescribed distributions of buoyancy and wind stress, in a basin with closed isobaths. I extend their analysis to cover basins with more complex depth contours, treating in particular the behavior of the flow in the presence of a saddle point.

2006
W. TIMOTHY LIU XIAOSU XIE PEARN P. NIILER

Many years of high-resolution measurements by a number of space-based sensors and from Lagrangian drifters became available recently and are used to examine the persistent atmospheric imprints of the semipermanent meanders of the Agulhas Extension Current (AEC), where strong surface current and temperature gradients are found. The sea surface temperature (SST) measured by the Advanced Microwave...

2016
Michael G. Jacox Elliott L. Hazen Steven J. Bograd

In Eastern Boundary Current systems, wind-driven upwelling drives nutrient-rich water to the ocean surface, making these regions among the most productive on Earth. Regulation of productivity by changing wind and/or nutrient conditions can dramatically impact ecosystem functioning, though the mechanisms are not well understood beyond broad-scale relationships. Here, we explore bottom-up control...

2009
David K. Hutchinson Andrew McC. Hogg Jeffrey R. Blundell

An eddy resolving quasi-geostrophic model of the Southern Ocean coupled to a dynamic atmospheric mixed layer is used to compare the performance of two different wind stress parameterisation schemes. The first is the standard quadratic drag law based on atmospheric velocity alone, while the second (more exact) formulation is based on the difference between ocean and atmosphere velocities. The tw...

2003
Philip Sura Sarah T. Gille

A stochastic model is derived from wind stress and bottom pressure gauge data to examine the response of the Antarctic Circumpolar Current (ACC) transport to wind stress forcing. A general method is used to estimate the drift and diffusion coefŽ cients of a continuous stationaryMarkovian system. As a Ž rst approximation, the response of the ACC to wind stress forcing can be describedby a multiv...

Influence of distributed generation systems in the distribution systems can increase the level of short-circuit current. The effectiveness of distributed generation systems is affected by the size, location, type of distributed generation systems technology, and the methods of connecting to distribution systems. Wind turbine system is the examples of distributed generation source. Not only does...

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