Sentences with phrase «atlantic circulation patterns»

The Gulf Stream and Atlantic circulation patterns are far more robust than this theory assumed, and, even if the Gulf Stream changes, proponents of the theory were overestimating the dependence of Europe on Gulf Stream warming.

One of the recent hysteria's has been that global warming will cause the Gulf Stream to collapse as Atlantic circulation patterns are radically altered, thus leading to the freezing of Europe.

Changes in the speed of the Atlantic circulation pattern — known as Atlantic Meridional Overturning Circulation — that influences the world's oceans because it acts like a conveyor belt moving water around the planet.

Not exact matches

«These changes in large - scale circulation patterns during summer are especially pronounced over the Arctic and the North Atlantic.

Researchers from the University of California Irvine have shown that a phenomenon known as the Atlantic Multidecadal Oscillation (AMO)-- a natural pattern of variation in North Atlantic sea surface temperatures that switches between a positive and negative phase every 60 - 70 years — can affect an atmospheric circulation pattern, known as the North Atlantic Oscillation (NAO), that influences the temperature and precipitation over the Northern Hemisphere in winter.

Air naturally poor in ozone was, for example, lifted into the lower stratosphere above Britain from the sub-tropical Atlantic, by an unusual pattern of atmospheric circulation.

They will look for evidence of temperature changes caused by ocean circulation patterns in both the North Atlantic and tropical Pacific Oceans, which drive precipitation in Tibet as well as the Indian monsoons.

Furthermore, since the end of the 19th century, we find an increasing variance in multidecadal hydroclimatic winter and spring, and this coincides with an increase in the multidecadal North Atlantic Oscillation (NAO) variability, suggesting a significant influence of large - scale atmospheric circulation patterns.

We use this index instead of the NAO, as the AMO is strongly correlated with thermohaline and atmospheric circulation patterns [26] as well as storm activity [27], [28] in the subtropical - temperate region where Atlantic juveniles reside [17].

The effects of circulation change in the North Atlantic are different to (potentially solar - driven) rainfall variability in the sub-tropics and are different again from the impacts of changing frequency and intensity in El Nino patterns.

There are continuing major questions about the future of the great ice sheets of Greenland and West Antarctica; the thawing of vast deposits of frozen methane; changes in the circulation patterns of the North Atlantic; the potential for runaway warming; and the impacts of ocean carbonization and acidification.

The jet stream off the East Coast of the United States controls an important climate pattern in the Atlantic... «The North Atlantic Oscillation is really driving these changes in ocean circulation,» said Gerald McCarthy, lead study author and an oceanographer at the University of Southampton in the United Kingdom....

As noted in that post, RealClimate defines the Atlantic Multidecadal Oscillation («AMO») as, «A multidecadal (50 - 80 year timescale) pattern of North Atlantic ocean - atmosphere variability whose existence has been argued for based on statistical analyses of observational and proxy climate data, and coupled Atmosphere - Ocean General Circulation Model («AOGCM») simulations.

Meridional circulation patterns were an important factor in the high latitudes of the North Atlantic during the early climatic fluctuation.

Examples of such circulation patterns include the Pacific - North American pattern (PNA), the North Atlantic Oscillation (NAO) / Arctic Oscillation (AO), the East Atlantic (EA), the West Pacific (WP), and the tropical / Northern Hemisphere (TNH).

The changing phases of Atlantic hurricane activity are not completely understood; but there appears to be a link to fluctuations in the thermohaline circulation, the global pattern of ocean currents which in western Europe appears as the Gulf Stream.

This disruption in circulation patterns could change the lives of people on both sides of the Atlantic.

The increasing global temperature, for instance, is linked to the 15 percent decline in the circulation of the Atlantic Ocean, which experts fear could disrupt weather patterns.

Image to right: Circulation patterns in the North Atlantic Ocean.

New evidence is also suggesting that changes in ocean circulation patterns played a very important role in bringing warmer seawater into the North Atlantic.

For example, if Europe had a wet year north of the Alps and a dry year to the south, that provides clues to circulation patterns and suggests influence from the North Atlantic Oscillation, one of the primary sources of climate variability affecting patterns in Europe.

This decade - scale shift in the atmospheric - circulation pattern over the North Atlantic, from the Azores to Greenland, strongly affects wintertime downwind.

The Atlantic Meridional Overturning Circulation (AMOC), a large - scale circulation pattern in the Atlantic, plays a central role in climate through its heat and freshwater Circulation (AMOC), a large - scale circulation pattern in the Atlantic, plays a central role in climate through its heat and freshwater circulation pattern in the Atlantic, plays a central role in climate through its heat and freshwater transports.

A flip - flop of the entire Atlantic Ocean's circulation pattern might have caused the Dansgaard - Oeschger events.

Observations suggest that variability in oceanographic conditions in the Arctic is very largely driven by the consequences of the flows through open passages to both Atlantic and Pacific Oceans, which themselves respond to the different and characteristic variability of the circulation patterns of each ocean: each inflow is not only variable in volume of water transported but also in the temperature of the water imported.

Oceanographers also had reasons to believe that the pattern of North Atlantic Ocean circulation could change on a short timescale.

The General Circulation Models (GCM) driving the regional models chosen are rated in the top 25 %, according to a performance evaluation of CMIP5 models carried out by Perez et al. (2014), in their ability to reproduce spatial patterns and climate variability over the north - east Atlantic region, that is the most influential on the European weather patterns.

A change in ocean heat content can also alter patterns of ocean circulation, which can have far - reaching effects on global climate conditions, including changes to the outcome and pattern of meteorological events such as tropical storms, and also temperatures in the northern Atlantic region, which are strongly influenced by currents that may be substantially reduced with CO2 increase in the atmosphere.

The seasonal climate may relate to changes in the ocean circulation pattern prior to 4.6 Ma that resulted in an increased temperature and atmospheric pressure gradient between the east coast of North America and the Atlantic Ocean, but this climate phase seems to be only a temporary condition, as underlying and overlying sediment are both consistent with drier conditions.

These aspects of precipitation generally exhibit large natural variability, and El Niño and changes in atmospheric circulation patterns such as the North Atlantic Oscillation have a substantial influence.

Identify the impacts of a changing climate on sea ice loss; sea ice loss on patterns of atmospheric circulation and precipitation; oceanic circulation both within and beyond the Arctic, including the meridional overturning circulation in the Atlantic Ocean; and weather patterns in middle latitudes.

Therefore, they sought an answer in terms of the atmospheric flow pattern that drives ocean circulation and results in the advection of warm water into the northeastern North Atlantic.

The torrent from the glacial lake would have thundered into the North Atlantic, adding a vast freshwater «lid» on the ocean surface that could have rearranged ocean circulation and changed climate patterns, said Donnelly, who is a fellow of both the Ocean and Climate Change Institute and the Coastal Ocean Institute at WHOI.

The models (and there are many) have numerous common behaviours — they all cool following a big volcanic eruption, like that at Mount Pinatubo in 1991; they all warm as levels of greenhouse gases are increased; they show the same relationships connecting water vapour and temperature that we see in observations; and they can quantify how the giant lakes left over from the Ice Age may have caused a rapid cooling across the North Atlantic as they drained and changed ocean 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.