نتایج جستجو برای: ekman current geostrophic current surface wind wind stress
تعداد نتایج: 1837831 فیلتر نتایج به سال:
This work presents new evidence for conducive conditions the existence of overturning instabilities in mixed layer across a mesoscale anticyclonic Loop Current Eddy (LCE) and surrounding cyclonic eddies Gulf Mexico (GoM). The LCE was intensively sampled using four gliders during 12 months. is characterized by strong anomaly fresh warm water center strain at periphery. Mixed layers prone to are ...
We develop and test a theory for the relationship of atmospheric pCO2 and the solubility pump of CO2 in an abiotic ocean. The solubility pump depends on the hydrographic structure of the ocean and the degree of saturation of the waters. The depth of thermocline sets the relative volume of warm and cold waters, which sets the mean solubility of CO2 in the ocean. The degree of saturation depends ...
Using a combination of Quick Scatterometer (QuikSCAT), Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E), and Lagrangian drifter measurements, we demonstrate that wind data alone are not sufficient to derive ocean surface stress (momentum flux) over mid-latitude ocean fronts, specifically the Kuroshio Extension. There was no continuous and large-scale stress measurement ove...
Representation of surface roughness effects on aeolian sediment transport is a key source of uncertainty in wind erosion models. Drag partitioning schemes are used to account for roughness by scaling the soil entrainment threshold by the ratio of shear stress on roughness elements to that on the vegetated land surface. This approach does not explicitly account for the effects of roughness confi...
Starting from the Navier–Stokes equation (in rotating, spherical coordinates), and of state coupled with first law thermodynamics for atmosphere, a general description near-surface flow in Arctic Ocean, atmosphere above it, is developed. This includes suitable stress boundary condition at air–ice–water interface. Invoking only thin-shell approximation, both ocean, an appropriate asymptotic redu...
[1] A synergetic approach for quantitative analysis of high-resolution ocean synthetic aperture radar (SAR) and imaging spectrometer data, including the infrared (IR) channels, is suggested. This approach first clearly demonstrates that sea surface roughness anomalies derived from Sun glitter imagery compare very well to SAR roughness anomalies. As further revealed using these fine-resolution (...
The spatial and temporal patterns of interannual temperature variability within the main thermocline (200– 400-m depth) of the Pacific (308S–608N) during 1968–97 are documented in two observational datasets and an ocean general circulation model forced with observed winds and air temperatures. Analysis of the processes responsible for the subsurface temperature variance is used to verify the pe...
The “Leipzig Wind Profile” is a unique example of a representative wind distribution in the frictional layer which resulted from MILDNER’S set of 28 pilot-balloon observations with two theodolites on October 20, 1931, near Leipzig for a stable weather situation. It is shown, that the vectors of geostrophic motion and ground drag follow from the wind profile when a scalar austausch is assumed. T...
With the existence of eight substantial islands in the Southern California Bight, the oceanic circulation is significantly affected by island wakes. In this paper a high-resolution numerical model (on a 1 km grid), forced by a high-resolution wind (2 km), is used to study the wakes. Island wakes arise due both to currents moving past islands and to wind wakes that force lee currents in response...
[1] A nested-grid ocean circulation modeling system is used to study the response of Lunenburg Bay in Nova Scotia, Canada, to local wind-forcing, tides, remotely generated waves, and buoyancy forcing in the summer and fall of 2003. Quantitative comparisons between observations and model results demonstrate that the modeling system reproduces reasonably well the observed sea level, temperature, ...
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