Sentences with phrase «changes in wind circulation»

Many believe changes in wind circulation related to global warming played a part.

Not exact matches

That wind - driven circulation change leads to cooler ocean temperatures on the surface of the eastern Pacific, and more heat being mixed in and stored in the western Pacific down to about 300 meters (984 feet) deep, said England.

But research published yesterday in the journal Nature rebuts this idea, suggesting that it was changes in ocean circulation, not winds, that predominantly led the deep water to surface near Antarctica and exhale carbon dioxide to the atmosphere.

Changes in polar vortex winds high in the stratosphere can alter the global conveyor belt of ocean circulation.

Gross says that the most important processes affecting day length are changes in the weather, especially unusual variations in the strength and direction of the winds, which bring on alterations in the global circulation of the atmosphere and ocean.

Climate changes that began ~ 17,700 years ago included a sudden poleward shift in westerly winds encircling Antarctica with corresponding changes in sea ice extent, ocean circulation, and ventilation of the deep ocean.

Some research has tied it to a series of small volcanic eruptions around the globe while other findings have linked it to the changes in winds and ocean circulation.

Dynamical effects (changes in the winds and ocean circulation) can have just as large an impact, locally as the radiative forcing from greenhouse gases.

A more likely scenario is that changes in the ocean circulation are a consequence of wind shifts.

The mechanisms by which low - level laser therapy (LLLT) decreases pain include release of endogenous opioids, changes in conduction latencies of nerves, increased cellular metabolism, increased circulation, promotion of neovascularization, decreased fibrosis formation, and reduction of inflammation.30 Feline conditions that respond well to LLLT include osteoarthritis, degenerative lumbosacral stenosis, fractures, chronic wounds, and stomatitis.31 Most cats tolerate LLLT well, as it is not painful and can be delivered in a relatively short time (FIGURE 2).31

A recent paper by Vecchi and Soden (preprint) published in the journal Geophysical Research Letters has been widely touted in the news (and some egregiously bad editorials), and the blogosphere as suggesting that increased vertical wind shear associated with tropical circulation changes may offset any tendencies for increased hurricane activity in the tropical Atlantic due to warming oceans.

As stated above, the wind - driven component is unlikely to change much, and so while the shallow, wind - driven circulations may actually transport more heat (and of course the atmosphere transfers even more), the variability in the heat transport can still be dominated by the variability in the overturning.

That matters because the trickiest part of global climate models appears to be how they handle ocean - atmosphere interactions, and I really have no idea how well they link changes in local wind - driven upwelling to the net thermohaline circulation.

Changes in Southern Ocean circulation resulting from changes in Southern Ocean winds (23) or buoyancy fluxes (24) have been identified as the dominant cause of atmospheric CO2 changes (9,Changes in Southern Ocean circulation resulting from changes in Southern Ocean winds (23) or buoyancy fluxes (24) have been identified as the dominant cause of atmospheric CO2 changes (9,changes in Southern Ocean winds (23) or buoyancy fluxes (24) have been identified as the dominant cause of atmospheric CO2 changes (9,changes (9,10,25).

However, the Trade Winds are primarily caused by the Hadley circulation, and are only modulated by the Walker circulation, so it is more precise to think of this result as indicating a change in strength of the Walker circulation.

In the Antarctic ozone depletion causes changes in air pressure that strengthen wind circulation and the winds maintain a cooling effect over the Antarctic continenIn the Antarctic ozone depletion causes changes in air pressure that strengthen wind circulation and the winds maintain a cooling effect over the Antarctic continenin air pressure that strengthen wind circulation and the winds maintain a cooling effect over the Antarctic continent.

Wind shear in the tropical Atlantic will remain highly variable from year to year, changing at the whim of individual El Niño and La Niña events which influence the Walker Circulation.

Short - term variations in ocean heat uptake, such as the anomalous deep ocean warming of late, are due to changes in the vertical & horizontal distribution of heat in the ocean — mostly the wind - driven ocean circulation.

In Oregon, we've documented changes in the winds and in the oceanographic circulation that appear to be causing the hypoxia / anoxiIn Oregon, we've documented changes in the winds and in the oceanographic circulation that appear to be causing the hypoxia / anoxiin the winds and in the oceanographic circulation that appear to be causing the hypoxia / anoxiin the oceanographic circulation that appear to be causing the hypoxia / anoxia.

It was determined that a major cause of changes in the size and extent of the Antarctic ozone hole are the intense wind patterns and circulations associated with the extensive Antarctic high - pressure zone and the surrounding wind pattern known as the Circumpolar Vortex.

monsoon wind in the genereal atmospheric circulation typified by a seasonal persistent wind direction and by a pronounced change in direction from one season to the next

A new study, published in Journal of Geophysical Research - Oceans, helps clarify how past and future coastal sea level changes are related to local winds and large - scale ocean circulation.

Bob Tisdale replies: [the trade winds weaken] «Due to changes in Hadley and Walker Circulation associated with the relocation of tropical Pacific convection during the El Nino.

More or less upwelling in the eastern Pacific is linked to changes in wind and gyre circulation — in both hemispheres — driven by changes in surface pressure in the polar annular modes.

Two wind patterns in the Indian Ocean, known as the Hadley circulation and the Walker circulation, interact with the Indo - Pacific warm pool to drive sea level changes.

A hemispheric - scale circulation pattern defined by changes in the westerly winds at midlatitudes.

That would change the air circulation patterns resulting in the observed wind effect on the ocean surfaces but would itself have been caused by changes in the rate of release or absorption of energy from the ocean surfaces.

Evidence from the Pacific and the Atlantic suggests that nutrient supply to the upper productive layer of the ocean is declining due to reductions in the Meridional Overturning Circulation and upwelling (McPhaden and Zhang, 2002; Curry and Mauritzen, 2005) and changes in the deposition of wind - borne nutrients.

This basin - wide change in the Atlantic climate (both warming and cooling) induces a basin - scale sea surface temperature seesaw with the Pacific Ocean, which in turn modifies the position of the Walker circulation (the language by which the tropical basins communicate) and the strength of the Pacific trade winds.

General circulation model calculations show extra heating in summer warms the stratosphere, strengthening easterly winds and changing wind patterns.

Heat transfer into the deep oceans is pretty much all mechanically driven by «circulation» factors, so a cooling of the southern oceans due to changes in surface winds and currents would tend to change deep ocean uptake.

Meridional Overturning Circulation includes the action of wind, as well as density changes through differences in temperature and salinity in order to drive the ocean currents.

The more traditional candidates included changes in ice and snow cover, ocean currents, or the pattern of wind circulation and storms.

... The dominance of summer anticyclonic circulation over the Arctic and the reduced SIE over eastern Siberia and the north of Alaska were similar to the results of Ogi et al. (2008), who demonstrated that the dramatic changes in Arctic SIE in 2007 were produced by [wind - driven] Ekman drift of sea ice out of the marginal seas to the central Arctic.»

Whether the large - scale thermodynamic environment and atmospheric static stability (often measured by Convective Available Potential Energy, CAPE) becomes more favourable for tropical storms depends on how changes in atmospheric circulation, especially subsidence, affect the static stability of the atmosphere, and how the wind shear changes.

Although we focus on a hypothesized CR - cloud connection, we note that it is difficult to separate changes in the CR flux from accompanying variations in solar irradiance and the solar wind, for which numerous causal links to climate have also been proposed, including: the influence of UV spectral irradiance on stratospheric heating and dynamic stratosphere - troposphere links (Haigh 1996); UV irradiance and radiative damage to phytoplankton influencing the release of volatile precursor compounds which form sulphate aerosols over ocean environments (Kniveton et al. 2003); an amplification of total solar irradiance (TSI) variations by the addition of energy in cloud - free regions enhancing tropospheric circulation features (Meehl et al. 2008; Roy & Haigh 2010); numerous solar - related influences (including solar wind inputs) to the properties of the global electric circuit (GEC) and associated microphysical cloud changes (Tinsley 2008).

This in turn helps explain how factors such as fresh water from melting ice or changes in global wind patterns might lead to large - scale changes in ocean circulation or climate in the future.

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?

Where could I find more information — preferably in a synopsis (as in a textbook)-- of expected changes in the global circulation and tropical, extratropical, and mesoscale storm frequency, structure, evolution, timing, and tracks (I've found data sources and annual maps (http://data.giss.nasa.gov/stormtracks/) but I'm not sure I'd get around to deriving any trends from that any time soon)... and also, maps of trends or expectations of trends in surface pressure and winds?

Warming the ocean leads to changes in atmospheric circulation, and the existing heat distributed in the ocean, which changes the wind - driven ocean circulation.

Whilst largely unanticipated in the climate change impacts community, previous analyses have predicted a slowing in the overall circulation rate in tropical regions and, presumably, a reduction in averaged wind speed in those regions with greenhouse warming [Betts, 1998; Held and Soden, 2006; Vecchi et al., 2006].............

The North Atlantic warms in a few months in response to an El Niño, through changes in atmospheric circulation (slower trade winds in the tropical North Atlantic, for example).

Reichler and colleagues used weather observations and 4,000 years worth of supercomputer simulations of weather to show a surprising association between decade - scale, periodic changes in stratospheric wind patterns known as the polar vortex, and similar rhythmic changes in deep - sea circulation patterns.

A University of Utah study suggests something amazing: Periodic changes in winds 15 to 30 miles high in the stratosphere influence the seas by striking a vulnerable «Achilles heel» in the North Atlantic and changing mile - deep ocean circulation patterns, which in turn affect Earth's climate.

Changes in the trade winds, atmospheric circulation, precipitation and associated atmospheric heating set up extratropical responses.