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

تعداد نتایج: 1837831  

2007
T. D. J. J. Simpson

Observations and models show that es lasting one-half inertial period. Thus, the sudden chanMes in the magnitude of the wind stress intent is to isolate one effect rather than to which occur within a time interval of one-half insimulate a particular data set which would be difertial period are most effective in increasing ficult to interpret because of competing processsurface current speeds an...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2006
R P J Kunnen H J H Clercx B J Geurts

The effect of rotation on turbulent convective flow between parallel plates has been assessed with direct numerical simulations. With increasing rotation-rate an interesting transition is observed in the vertical-velocity skewness. This transition indicates a localization of motion directed away from the wall and correlates well with changes observed in the heat flux, as well as in the thermal ...

2007
Victor Zlotnicki

D I R E C T measurement of large-scale ocean currents with current meter arrays is difficult and costly on basin scales. Since large-scale currents are very nearly in geostrophic balance, their velocity can be calculated from the pressure gradient on an equigeopotential surface. The surface geostrophic current therefore can be calculated from the deviation of sea level from the equigeopotential...

Journal: :Journal of Physical Oceanography 2021

Abstract The frequency and latitudinal dependence of the mid-latitude wind-driven meridional overturning circulation (MOC) is studied using theory linear nonlinear applications a quasi-geostrophic numerical model. Wind-forcing varied by either changing strength wind or shifting location stress curl pattern. At forcing periods less than first mode baroclinic Rossby wave basin crossing time scale...

2017
Hong Zhang S. A. Sannasiraj

Wind, wave and current interactions control the boundary fluxes, momentum and energy exchange between the atmosphere and the ocean, and within the water column. The wind wave effect on surface stress is investigated using a three-dimensional time-dependant ocean circulation model. The POM (Princeton Ocean Model) based model is implemented with realistic coastlines in South China Sea and emphasi...

Journal: :international journal of marine science and engineering 2012
h. zare banadkooki s. mazaheri m. r. akbarpour jannat a. aziminejad

it is proposed to use a single base platform in the persian gulf considering its low depth and more appropriate environmental conditions in comparison to north sea and mexico gulf where this kind of platform is very popular. the pile of platform is responsible for transmission of environmental loads resulted from waves, currents, wind and dead loads to foundation of platform. using sacs 5.3 sof...

2003
R. T. WILLIAMS

The structure of barotropically unstable disturbances in the Tropics is studied with a two-level quasi-geostrophic model. An Ekman layer is attached to the lower boundary. The equations are linearized and the most unstable mode is found numerically by using the initial value technique. Computations are made for a shear-zone wind profile and a jet profile; these fields are independent of height....

2017
Alfredo Peña

Here we use accurate observations of the wind speed vector to analyze the behavior with height of the wind direction. The observations are a combination of tall meteorological mast and long-range wind lidar measurements covering the entire atmospheric boundary layer. The observations were performed at the Høvsøre site in Denmark, which is a flat farmland area with a nearly homogeneous easterly ...

2002
BARRY A. KLINGER JULIAN P. MCCREARY RICHARD KLEEMAN

An earlier study showed that an atmosphere–ocean model of the Pacific develops a midlatitude oscillation that produces decadal sea surface temperature (SST) variability on the equator. The authors use the ocean component of this model to understand better how subtropical wind stress oscillations can cause such SST variability. The model ocean consists of three active layers that correspond to t...

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