Results 11 to 20 of about 2,215,057 (219)

A systematic method of estimation of alongshore windstress and Ekman transport associated with coastal upwelling [PDF]

MethodsX, 2023
A standard method for estimating alongshore windstress (AWS) and related cross-shore Ekman transport (ET) is proposed. In the absence of standard methodologies for estimating coastal angles required for AWS estimation, an estimation is typically derived ...
Sthitapragya Ray, Debadatta Swain
doaj   +4 more sources

The partitioning of poleward energy transport response between the atmosphere and Ekman flux to prescribed surface forcing in a simplified GCM [PDF]

Geoscience Letters, 2018
Recent studies have indicated that ocean circulation damps the atmospheric energy transport response to hemispherically differential energy perturbations, thereby muting the shifts of the Inter-Tropical Convergence Zone (ITCZ).
Sarah M. Kang, Yechul Shin, Francis Codron   +2 more
doaj   +4 more sources

Ekman Transport in Balanced Currents with Curvature

Journal of Physical Oceanography, 2017
AbstractEkman transport, the horizontal mass transport associated with a wind stress applied on the ocean surface, is modified by the vorticity of ocean currents, leading to what has been termed the nonlinear Ekman transport. This article extends earlier work on this topic by deriving solutions for the nonlinear Ekman transport valid in currents with ...
Jacob O. Wenegrat, Leif N. Thomas
openaire   +2 more sources

Estimating zonal Ekman transport along coastal Senegal during passage of Hurricane Fred, 30–31 August 2015

SN Applied Sciences, 2021
We examine the role of zonal Ekman transport along the coast of Senegal on 30 August 2015 when the tropical disturbance associated with Tropical Cyclone Fred was located to the west of Senegal, causing considerable coastal damage in the southern Senegal ...
Abdou Lahat Dieng, Siny Ndoye, Gregory S. Jenkins, Saïdou M. Sall, Amadou T. Gaye   +4 more
doaj   +2 more sources

Extension of Ekman (1905) wind-driven transport theory to the β plane [PDF]

Ocean Science, 2023
The seminal Ekman (1905) f-plane theory of wind-driven transport at the ocean surface is extended to the β plane by substituting the pseudo-angular momentum for the zonal velocity in the Lagrangian equation. When the β term is added, the equations become
N. Paldor, L. Friedland
doaj   +4 more sources

Ekman heat transport for slab oceans

Climate Dynamics, 2011
A series of schemes designed to include various representations of the Ekman-driven heat fluxes in slab-ocean models is introduced. They work by computing an Ekman mass flux, then deducing heat fluxes by the surface flow and an opposite deep return flow. The schemes differ by the computation of the return flow temperature: either diagnosed from the SST
Francis Codron, Codron, Francis
openaire   +4 more sources

A Bound on Ekman Pumping

Journal of Advances in Modeling Earth Systems, 2020
Momentum transport by boundary layer turbulence causes a weak synoptic‐scale vertical motion. The classical textbook solution for the strength of this Ekman pumping depends on the curl of the surface momentum flux.
Stephan R. deRoode, A. Pier Siebesma
doaj   +2 more sources

Rigorous bounds on the heat transport of rotating convection with Ekman pumping [PDF]

Journal of Mathematical Physics, 2020
We establish rigorous upper bounds on the time-averaged heat transport for a model of rotating Rayleigh-Bénard convection between no-slip boundaries at infinite Prandtl numbers and with Ekman pumping. The analysis is based on the asymptotically reduced equations derived for rotationally constrained dynamics with no-slip boundaries, and hence, includes ...
B. Pachev, J. P. Whitehead, G. Fantuzzi, I. Grooms   +3 more
openaire   +5 more sources

The Impact of Ekman Pumping and Transport on Dosidicus gigas (Jumbo Flying Squid) Fishing Ground by Chinese Jiggers off the Coast of Peru

Journal of Marine Science and Engineering
Upwelling is often associated with high productivity, biodiversity, and fishery resource abundance. This study employed a generalized additive model (GAM) to analyze the effects of Ekman pumping and transport on the abundance and distribution of jumbo ...
Xingnan Fang, Xin Zhang, Xinjun Chen, Wei Yu   +3 more
doaj   +2 more sources

Ekman Transport and Zooplankton Concentration in the North Pacific Ocean

Journal of the Fisheries Research Board of Canada, 1967
Annual concentrations of zooplankton off California varied directly, and concentrations in the western Bering Sea varied indirectly with calculated southerly components of Ekman transport in the previous year at 50°N,140°W. This point is in the area in which surface subarctic water and the deeper currents divide north and south.
W. Percy Wickett
openaire   +2 more sources