Sentences with phrase «wind eddies»

«Projecting electricity output at a wind farm is extraordinarily challenging as it involves predicting variable gusts and complex wind eddies at the height of turbines, which are hundreds of feet above the sensors used for weather forecasting»

Wind energy: Projecting electricity output at a wind farm is extraordinarily challenging as it involves predicting variable gusts and complex wind eddies at the height of turbines, which are hundreds of feet above the sensors used for weather forecasting.

The wind eddied and corkscrewed and whistled through its teeth at you.

Not exact matches

Temperature and pressure variations power winds and storms, from minor eddies to angry funnel clouds.

Until this research, a major uncertainty around the future impacts of climate change was whether the eddy field would change with stronger winds or whether it would remain static.

«To put this in some kind of context, if those small scale eddies did not increase with wind stress then the saturation of carbon dioxide in the Southern Ocean sink would occur twice as rapidly and more heat would enter our atmosphere and sooner.»

«If the winds continue to increase as a result of global warming, then we will continue to see increased energy in eddies and jets that will have significant implications for the ability of the Southern Ocean to store carbon dioxide and heat,» said Dr Hogg.

During the 12 - day at - sea experiment called GLAD (Grand Lagrangian Deployment), the research team deployed 300 GPS - equipped custom drifter soff the UM Rosenstiel School research vessel F.G. Walton Smith in a region where wind - driven continental shelf currents mix with buoyancy - driven Mississippi River outflow currents and deep eddy - driven currents in the Gulf of Mexico.

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.

And shear is important in generating «eddies» — cyclonic or anticyclonic swirls of energy — within the overall wind flow.

The eddy lumbered past the northern side of Greenland, its winds swirling clockwise.

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.

Whipped up by surface winds and girded by the Coriolis effect (produced by Earth's rotation), eddies may grow to several hundred kilometers in diameter and are known to transport heat, chemicals and biology throughout the oceans» shallower depths.

The eddies that pass over the East Pacific Rise are generated by westward winds that come through mountain passes in Central America.

The scientists studied a specific type of turbulences known as synoptic eddies, and calculated the total energy of their wind speeds.

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.

A small cyclonic eddy occurred within Wilhelmina Bay driven by strong, episodic southerly katabatic winds (Figure 1a).

Maltrud, M.E., R.D. Smith, A.J. Semtner, and R.C. Malone, 1998: Global eddy - resolving ocean simulations driven by 1985 — 1995 atmospheric winds.

A few flakes first, in the dull gray late - afternoon sky, and then wind - driven swirls and eddies around the edges of their wide front porch.

A Catalina eddy is rarely prolonged: as the heat over the deserts causes air to rise, the resulting pressure gradient and increase in the normal onshore winds causes the vortex to dissipate.

Currently, up to nearly half of humanity's carbon dioxide output ends up dissolved in seawater, with most landing in the Southern Hemisphere oceans, where wind - driven eddies bury it deeply.

The corresponding working quasilinear wave equation for the barotropic azonal stream function Ψm ′ of the forced waves with m = 6, 7, and 8 (m waves) with nonzero right - hand side (forcing + eddy friction) yields (34) u˜ ∂ ∂ x (∂ 2Ψm ′ ∂ x2 + ∂ 2Ψm ′ ∂ y2) + β˜ ∂ Ψm ′ ∂ x = 2Ω sin ϕ cos2 ϕT˜u˜ ∂ Tm ′ ∂ x − 2Ω sin ϕcos2 ϕHκu˜ ∂ hor, m ∂ x − (kha2 + kzH2)(∂ 2Ψm ′ ∂ x2 + ∂ 2Ψm ′ ∂ y2), [S3] where x = aλ and y = a ln -LSB-(1 + sin ϕ) / cos ϕ] are the coordinates of the Mercator projection of Earth's sphere, with λ as the longitude, H is the characteristic value of the atmospheric density vertical scale, T˜ is a constant reference temperature at the EBL, Tm ′ is the m component of azonal temperature at this level, u˜ = u ¯ / cos ϕ, κ is the ratio of the zonally averaged module of the geostrophic wind at the top of the PBL to that at the EBL (53), hor, m is the m component of the large - scale orography height, and kh and kz are the horizontal and vertical eddy diffusion coefficients.

TURBULANT FLOW; (wind in surges, eddies, chaotic flow, spkiy erratic velocity) Layer of hot air canopy gets MIXED and heat in the boudary escapes to the sky.

Eddy Turbine: The eddy turbine is sleek in design, and is safe in wind speeds up to 120 mph.

back to the horizontal gradient, if the upper tropospheric thermal wind shear increase is greater than the decrease of the lower layer, then maybe the overall baroclinic instability would be stronger — but currently the upper level eddy circulations do not transport much heat poleward, so would the structure of cyclones change so that a deeper layer of air is involved in the thermal advection, compensating for a weaker temperature gradient?

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Tropical cyclones seem to me to be a very good potential source of forcing «by daily and six - hourly winds and heat fluxes», according to Enhanced vertical mixing within mesoscale eddies due to high frequency winds in the South China Sea [3]:

If the wind field contains energy at the inertial frequency or higher (daily and six - hourly cases), then Vortex Rossby waves and near inertial waves are excited as ageostrophic expression of the vigorous eddy field.

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 behavior is expected if there is a baroclinic feedback that encourages the maximum baroclinic instability to be coincident with the maximum zonal wind - speed, and discourages the meridional vacillation of the eddy - driven jet stream.

Pilot balloon measurements during BoDEx point to a marked diurnal cycle in the wind speed such that the LLJ accelerates over a near frictionless inversion by night but is mixed down to the surface by extreme radiative heating through modification of eddy viscosity to produce a surface - wind - speed maximum by ≈ 1100 local time (32).

The effects of mesoscale eddies on the main subtropical thermocline are explored using a simply configured wind - and buoyancy - driven primitive equation numerical model in conjunction with transformed Eulerian mean diagnostics and simple scaling ideas and closure schemes.