Sentences with phrase «large eddy»

If the model is configured to simulate small clouds or turbulence with a grid spacings of 100 m or less we usually refer to this as a «large eddy simulation» (LES).

The boundary layer parameterizations are evaluated against reference large eddy simulations and field observations, under the auspices of another WCRP program.

Lets focus down in scale, say to a large eddy simulation model, with resolution of say 2 m. Even such models have parameterizations of the subgrid motions.

But a few weeks after the blowout occurred, an unexpected and fortunate thing happened: A large eddy developed in the Gulf, cutting off the current from the Florida Straits and keeping the oil largely contained in the Gulf itself.

Aagaard, K., R. Andersen, J. Swift, and J. Johnson,» A large eddy in the central Arctic Ocean», Geophys.

Pressel, K. G., S. Mishra, T. Schneider, C. M. Kaul, Z. Tan, 2017: Numerics and subgrid - scale modeling in large eddy simulations of stratocumulus clouds.

They start by conducting high - fidelity large eddy simulations that accurately capture the physics of the turbulence that is making the noise.

CHARLES is a high - fidelity flow solver for large eddy simulation, a mathematical model grounded in fluid flow equations known as Navier - Stokes equations.

NASA cautions that the model shows only the largest eddies, and they tend to appear more sharply defined here than in the real world.

Much larger eddies have been observed using satellites, but small cyclones have been very rarely measured, the researchers will report in an upcoming issue of Geophysical Research Letters.

The Dynocom DC - 1250 has several product changes, including an increase in the shaft sizes, from 1.25 - to 1.5 - inch; the addition of a larger eddy brake rated at 700 hp (instead of 600 hp); X-Cut knurling; and integrated tie down electronic anchoring indication.

The Dynocom DC - 1250 has several product changes, including an increase in the shaft sizes, from 1.25» to 1.5»; the addition of a larger eddy brake rated at 700 hp (instead of 600 hp); X-Cut knurling; and integrated tie down electronic anchoring indication.

The variability that I found could also be a consequence of eddy asymmetry not being the same for all eddies, like stronger or larger eddies being more or less asymmetric.

Another good page for graphics http://polar.ncep.noaa.gov/global/nc/?-eqatl-temperature-100-small-rundate=20140512 Last year was there very large eddies of sinking warm surface water down to över 500 m in this area of the Atlantic.

Not exact matches

«Previous studies looked for turbulence or eddies on the scale of the animals» size,» he says, instead of large downward jets.

That paper noted that migrating brine shrimp created jets and eddies much larger than themselves.

The tiniest contaminant — a speck of dust, a blade of grass — can disrupt a waterslide's flow, touching off larger irregularities that in turn create swirling eddies, and so on.

From the largest visible swaths of paint to the tiniest strokes, Van Gogh's brushwork seems instinctually guided to simulate river eddies and cloud rotations.

Lozier (p. 1507) discusses how recent studies have challenged our view of large - scale ocean circulation as a simple conveyor belt, by revealing a more complex and nuanced system that reflects the effects of ocean eddies and surface atmospheric winds on the structure and variability of the ocean's overturning.

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.

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.

The currents caused by large, swirling eddies at the ocean's surface may reach all the way to the sea floor, a new study suggests.

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.

An eddy is a large, cylindrical column of water.

However, the surface cooling from ice melt increases surface and lower tropospheric temperature gradients, and in stark contrast to the case without ice melt, there is a large increase of mid-latitude eddy energy throughout the midlatitude troposphere.

Without ice melt, surface warming is largest in the Arctic, resulting in a decrease of lower tropospheric eddy energy.

However, the surface cooling from ice melt increases surface and lower tropospheric temperature gradients, and in stark contrast to the case without ice melt, there is a large increase in midlatitude eddy energy throughout the midlatitude troposphere.

The object is in a large, star - forming region where chaotic motions and eddies in the gas and dust result in smaller cloudlets that can rotate in different directions.

LASSO will enhance ARM observations by using large - eddy simulation (LES) modeling to provide context and a self - consistent representation of the atmosphere surrounding the Southern Great Plains (SGP) atmospheric observatory.

Tonttila, J., Maalick, Z., Raatikainen, T., Kokkola, H., Kühn, T., and Romakkaniemi, S.: UCLALES — SALSA v1.0: a large - eddy model with interactive sectional microphysics for aerosol, clouds and precipitation, Geosci.

In the enclosed entry porch, trophies smothered a large, wooden table; they were framed by two of Titus's many coveted «Eddies,» metal and wood surfboards awarded to participants of the exclusive Eddie Aikau Big Wave Invitational.

The error bars in state - of - the - art SST compilations take into account such sampling uncertainties, and indeed they become larger back in time, especially the earliest decades (1850s - 1870s) in part due to the fact that there is substantial eddy variance.

Mostly this is a question of scale (model grid boxes are too large for the details to be resolved), but sometimes it's a matter of being uncertain how to include it (for instance, the impact of ocean eddies on tracers).

The eddies actually work to maintain the mean large - scale flow (e.g. the Gulf Stream).

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.

PyCLES is a Python - based large - eddy simulation (LES) code, whose development is led by Kyle Pressel.

We can not simulate low clouds globally, but we can simulate them faithfully in limited domains, with large - eddy simulations (LES).

Tan, Z., T. Schneider, J. Teixeira, and K. G. Pressel, 2017: Large - eddy simulation of subtropical cloud - topped boundary layers: 2.

Pressel, K. G., C. M. Kaul, T. Schneider, Z. Tan, and S. Mishra, 2015: Large - eddy simulation in an anelastic framework with closed water and entropy balances.

It is not diffusive at all; the atmosphere is too large for diffusive mixing or even small eddy mixing to dominate.

Large - eddy simulation (LES) of clouds can help resolve one of the most important and challenging question in climate dynamics, namely, how subtropical low clouds respond to global warming.

Zhang, X., T. Schneider, and C. M. Kaul, 2018: Arctic stratocumulus in large - eddy simulations and a mixed - layer model.

The sustainable deviation from the rotation at the angular velocity of the Earth can not be a large fraction of that as it's a net value calculated from opposite effects caused by Easterlies and Westerlies with a contribution from the eddies.

We use the large - eddy simulation code PyCLES to simulate the dynamics of clouds and boundary layers, to elucidate their response to climate changes, and to develop closure schemes for representing their smaller - scale dynamics in larger - scale climate and weather forecasting models.

The links between model biases and the underlying assumptions of the shallow cumulus scheme are further diagnosed with the aid of large - eddy simulations and aircraft measurements, and by suppressing the triggering of the deep convection scheme.

«Skill of ship - following large - eddy simulations in reproducing MAGIC observations across the northeast Pacific stratocumulus to cumulus transition region.»

A recent study highlights results obtained from an aircraft ocean survey that targeted a large warm core eddy in the eastern Caribbean Sea, where upper ocean measurements are crucial to understanding the complexities of heat and moisture transfer during the passage of tropical cyclones.

Similar parametrizations work all the way up to handle larger - scale patterns: eddies and clouds etc..

Because the subgrid - scale diffusion is turned off when the three - dimensional perturbation is added to the axisymmetric circulation, the Hadley circulation first weakens before it strengthens when large - scale eddies form.

The eddy covariance observations and the model simulations over Europe illustrate the fact that there is a larger correlation of flux changes with rainfall than with temperature changes.