Sentences with phrase «which eddy»

A mechanism is presented by which eddy heat and momentum transport couple to retard motion of the jet, slowing its meridional variation and thereby extending the persistence of zonal index and annular mode anomalies.

When a gyre region is added to the channel, vertical diffusion in the gyre exerts some control on the channel stratification even at higher winds, forcing the mass balance into a mixed regime in which both eddy and diffusive effects are important.

This paper investigates the factors that determine the equilibrium state, and in particular the height and structure of the tropopause, in an idealized primitive - equation model forced by Newtonian cooling in which the eddies can determine their own depth.

Not exact matches

The velocity at which a smoothly flowing stream produces eddies depends on the water's viscosity, the diameter of the channel, and other factors, but no one fully understands what triggers all the turbulence.

Their work, which Hassanzadeh will present at the annual meeting of the American Physical Society's Division of Fluid Dynamics in Pittsburgh on November 25, also provides insight into persistent ocean eddies and vortices that contribute to star and planet formation.

«The boundary layer can be laminar, which is smoothly flowing, or turbulent, in which case you have eddies,» Bush says.

«Mesoscale eddies are on the scale of hundreds of kilometers across, yet the ocean is only four kilometers deep, which makes them essentially two - dimensional.

A new study has found that turbulent mixing in the deep waters of the Southern Ocean, which has a profound effect on global ocean circulation and climate, varies with the strength of surface eddies — the ocean equivalent of storms in the atmosphere — and possibly also wind speeds.

By correlating the flux of chemical sediments and organisms with the passage of eddies, researchers say they have identified a new mechanism by which vent products are transported around the world.

The science team obtained vital information about the physical characteristics within one large warm - water eddy, which likely originated from the North Brazil Current, and analyzed its potential influence on sub-surface ocean conditions during the passage of tropical cyclones.

The ocean is full of eddies, swirling motions some tens to hundreds of kilometres across, which mix the water and carry it across the average currents.

This information will provide unique insight into the eddy's duration, stability, and influence on the ocean systems; and will improve current ocean models, which are critical for developing expectations on the health of future oceans.

With its surveying ability, the LRAUV allows scientists to discover, track, and sample open - ocean eddies, which can be over 100 kilometers (62 miles) across and last for months.

For this project, they and their teams are collaborating with engineers from MBARI to test new ways of adaptively sampling oceanographic features such as open - ocean eddies, swirling masses of water that move slowly across the Pacific Ocean, which can have large effects on ocean microbes.

To definitively say that the birds are drafting off each other, however, the exact location of the eddies and the areas of downdraft would need to be measured on ibises, which would require flying them in a wind tunnel — a far more intrusive process than simply carrying a data logger.

Paul Shannon, Eddies mentor, is the director of a secret CIA contractor which - unknown to Eddie - has commercial interests in the lab equipment.

These data are used in large - eddy simulation (LES) models, which simulate atmospheric air currents and cloud processes, to provide context and a self - consistent representation of the atmosphere surrounding the SGP.

The results are presented at a resolution high enough to enable studying ocean eddies and other narrow current systems, which are overlooked by lower - resolution models.

The capabilities of Test Cell 1 include a fuel / air combustion skid for energy input; cooling systems for heat removal; 130 kW eddy - current dynamometer for precision power measurements; and instrumentation, system protection, and power control channels.For measuring the thermal output of fuel - fired thermal energy systems, such as a gas - fired liquid - metal evaporator for Stirling engines, Test Cell 1 offers a gas - gap calorimeter, which simulates the engine by allowing the liquid metal to condense at operating temperatures.

Paul, above its paucity of imagination, is otherwise listless, wandering around as it does looking for situations from which it can mine stupid send - ups of Meatballs humour with the impetus of a pot seed caught in a bong eddy.

Ms. Doyle co-authored Measuring Teacher Effectiveness: A Look «Under the Hood» of Teacher Evaluation Systems, which won the 2012 «Most Actionable Research» Eddies!

This is inherent due to several factors, which include, but are not limited to, atmospheric conditions (temp, barometric readings, etc), testing conditions (do they place a fan in front of the radiator, how tight did they tie down the vehicle, etc), type of dyno (eddy current or acceleration), or manufacturer of the dyno itself (Mustang, Dynojet, Superflow, etc.).

To unmoor me from the curious eddy into which I'd drifted.

When the troughs stay up north, they often cause a coastal eddy to form off our coast, which enhances the marine layer.

Starr's 2010 project I am a Record, according to a website description, dissected and revealed «the artist's personal, geographic and imagined environment» and featured a wide variety of recordings made since age five including the rumbling of a broken radiator which she thought was «speaking to her,» «re-enactments of secretly recorded stranger's conversation,» field recordings, singing voices, paranormal telephony, family dinner conversations, «air eddies transformed into music,» and other unusual sounds.

There's the world of the inside of the car, which could be social, but also ergonomic, to do with monitoring and controlling the vehicle, and also gaseous and physiological, to do with breathing and the exchanges of oxygen and nitrogen and carbon inside the car; outside the cocoon of the car there is a domain of air currents, eddies and swirls, of turbulences and currents which constitutes a separate system.

The Synchromists made use of the broken planes of the Cubists, but their lavishly colored areas of paint sometimes looked, as the art historian Abraham Davidson has described them, like «eddies of mist, the droplets of which collect to form parts of a straining torso... To find anything like this in American painting one has to wait for the color - field canvases of Jules Olitski in the 1960s.»

The oceans are a difficult part of the system for a number of reasons (mainly that the scale at which important things happen (bottom currents, eddies, western boundary currents) is quite small relative to similar processes in the atmosphere.

But there's a new generation of inductive bike lighting coming of age right now, which uses the naturally - generated eddy currents from the spinning wheel of the bike to produce enough electricity to drive bright (and energy - efficient) LED bulbs, and which promises to set cyclists free from the dreaded dead battery blues.

Consenquently, the associated SST pattern is slightly cooler in the deep convection upwelling regions of the Equitorial Pacific and the Indian Ocean, strongly cooler in the nearest deep convection source region of the South Atlantic near Africa and the Equator, warm over the bulk of the North Atlantic, strongly warmer where the gulf stream loses the largest portion of its heat near 50N 25W, and strongly cooler near 45N 45W, which turns out to be a back - eddy of the Gulf Stream with increased transport of cold water from the north whenever the Gulf Stream is running quickly.

Flat stretches of sea floor offer no nooks in which to hide or lay eggs, less surface area providing a home for algae, invertebrates, and other potential food sources, and no eddies in which fish can take shelter from strong currents.

Ocean surface cooling, in the North Atlantic as well as the Southern Ocean, increases tropospheric horizontal temperature gradients, eddy kinetic energy and baroclinicity, which drive more powerful storms.

These horizontal energy transport eddies span a wide range of spatial scales, the vast majority of which can not be resolved within the capabilities of existing computer resources.

Chris Jones and Chris Bretherton at the University of Washington invented an algorithm to speed up cloud resolving model simulations by cleverly exploiting a known timescale separation between fast eddies and the rate at which they evolve the horizontal mean state of a limited domain LES.

Ocean heat flux is a turbulent and complex system [7] which utilizes atmospheric measurement techniques such as eddy covariance to measure the rate of heat transfer expressed in the unit of joules or watts per second.

The total implied dynamic change, which results from stationary - eddy circulation changes and transient - eddy moisture flux changes, is negative at most latitudes.

The best known of these eddies are the Gulf Stream rings, which develop in meanders of the current east of Cape Hatteras.

Workshop participants recommended that steps should be taken to define air - sea fluxes as ECVs or EOVs, particularly for those fluxes that can be measured directly and for which there is consensus about measurement methods (e.g., air - sea heat and momentum exchanges using the eddy covariance method).

The dead zones were created in large areas of swirling water known as eddies, which form when two or more currents collide.

Ecosystem - atmosphere CO2 exchange on short time - scales can be measured using micrometeorological techniques such as eddy covariance, which relies on rapidly responding sensors mounted on towers to resolve the net flux of CO2 between a patch of land and the atmosphere (Baldocchi et al., 1988).

Algae was able to grow on the surface of the eddies, which gives the dead zones a light - blue tint when viewed from above.

And that current south of the Bering Strait is the very cold Japanese Current and the eddies around the Aleutian Islands — neither of which is not «tropical» by any regard.

The problem is the context was eddy diffusion which is not diffusive mixing.

As for the temporal scales, here the problem is not so much the small scales (where we have weather as Kolmogorov has his eddies) but the large scales (the characteristic L time that defines the climate) which is a concept that doesn't make sense for Kolmogorov's theory.

Basically this is because of the growth of sub-grid-scale eddies which seem to come out of nowhere.

They then estimated the heat flux into the thermocline using a standard (accepted) model, with a thermocline eddy diffusion coefficient of 1.2E - 5 m ^ 2 / s from Ledwell: We estimate s by using this slope along with k = 1.2x10 - 5 m2 / s (the eddy diffusion coefficient in the thermocline [Ledwell et al., 1998]-RRB- So if they are wrong, either their basic model is wrong (which seems unlikely - it is just a simple energy balance model after all), or their choice of eddy diffusion coefficient is wrong.

Ledwell's 1998 SF6 tracer experiments established an eddy diffusion coefficient of around 10 - 5, which is what Douglass uses.

During Katrina and Rita, deep warm water in the Loop Current and within a Loop Current eddy was located under the storm tracks, which helped these storms to reach Category 5 intensity over the Gulf of Mexico.

Counter currents and gyres created by bottom features such as the Pourtalès Terrace in the Florida Current and the Charleston Bump in the Gulf Stream help retain the pelagic larvae within the area of the Florida Keys and SAB, respectively, by causing persistent gyres and eddies that spin off the current and retain their pelagic flora and fauna, some of which recruit to benthic and pelagic habitats in the region.

On this note, one of the latest papers in this area is Weijer et al. (2012)(link goes to e-print), which compares the MOC response in the IPCC - class ocean model POP to the response in a higher - resolution (0.1 degree) strongly - eddying version of POP.