Sentences with phrase «atlantic ocean climate»

Not exact matches

The Atlantic Ocean surface circulation is an important part of the Earth's global climate, moving warm water from the tropics towards the poles.

Looking at shifts in Manley's winter temperatures from year to year, he says, gives a good reading of important natural cycles that influence climate, such as changes in ocean circulation like the North Atlantic Oscillation.

A German - Russian research team has investigated the role of heat exchange between ocean and atmosphere in long - term climate variability in the Atlantic.

But now researchers appear to have a straightforward explanation for the contradiction: sulphate pollution generated in industrialised areas starts a chain reaction which changes the pattern of climates to bring colder winds to the North Atlantic and North Pacific oceans.

During what are called Heinrich events — natural but still largely unexplained fluctuations in the global climate — the Atlantic Ocean's circulation slows substantially.

And the Atlantic is not the only ocean on the globe with such mercurial currents: A similar effort to understand the dynamics of the southern ocean around Antarctica would help explain the complexity of ocean and climate interactions.

It calls for greater coordination to adapt to climate change from both sides of the Atlantic Ocean and urges Europe to lead by example, striving to meet the European Union's own ambitious climate and energy goals for 2020.

By combining this data with Ridgwell's global climate model, the team deduced the amount of carbon added to the ocean and atmosphere and concluded that volcanic activity during the opening of the North Atlantic was the dominant force behind the PETM.

The research team showed that prior to the industrial period (pre AD 1800), changes in the North Atlantic Ocean, brought about by variations in the Sun's activity and volcanic eruptions, were driving our climate and led to changes in the atmosphere, which subsequently impacted our weather.

By studying the chemistry of growth rings in the shells of the quahog clam, an international team led by experts from Cardiff University and Bangor University have pieced together the history of the North Atlantic Ocean over the past 1000 years and discovered how its role in driving the atmospheric climate has drastically changed.

But within these long periods there have been abrupt climate changes, sometimes happening in the space of just a few decades, with variations of up to 10ºC in the average temperature in the polar regions caused by changes in the Atlantic ocean circulation.

The results are extremely important in terms of discerning how changes in the North Atlantic Ocean may impact the climate and the weather across the Northern Hemisphere in the future.

Starting from the same kernel of scientific truth as did The Day After Tomorrow — that global warming could disrupt ocean currents in the North Atlantic — a study commissioned by the Pentagon, of all organizations, concluded that the «risk of abrupt climate change... should be elevated beyond a scientific debate to a U.S. national security concern.»

Saba, who has conducted modeling studies on the impacts of climate change on endangered leatherback turtles in the eastern Pacific Ocean, says the Northwest Atlantic loggerhead study offers a new approach in understanding how climate variability affects sea turtle populations.

There are two big climate influences on hurricanes — the Pacific Ocean's El Niño / La Niña cycle and the Atlantic Multidecadal Oscillation (AMO).

But researchers from the University of Geneva (UNIGE), Switzerland, members of the PlanetSolar Deepwater expedition, have now succeeded in linking the composition of marine biological aerosols — and therefore their influence on the climate — to that of bodies of water under them within the Atlantic Ocean, thereby paving the way to an indirect study of these aerosols through water analysis.

Retreating sea ice in the Iceland and Greenland Seas may be changing the circulation of warm and cold water in the Atlantic Ocean, and could ultimately impact the climate in Europe, says a new study by an atmospheric physicist from the University of Toronto Mississauga (UTM) and his colleagues in Great Britain, Norway and the United States.

«These results help resolve a divergence in climate trends of the past 2,000 years recorded in marine sediments of the North Atlantic Ocean, compared with those recorded in fossil pollen from the continents of North America and Europe,» says Jonathan Wynn, program director in NSF's Division of Earth Sciences, which co-funded a portion of the research with NSF's Division of Environmental Biology.

«Northwest Atlantic Ocean may get warmer, sooner: High resolution global climate model shows much faster warming and changing ocean circulation.&rOcean may get warmer, sooner: High resolution global climate model shows much faster warming and changing ocean circulation.&rocean circulation.»

«Melting Greenland ice sheet may affect global ocean circulation, future climate: University of South Florida and international scientists find influx of freshwater could disrupt the Atlantic Meridional Overturning Circulation, an important component of global ocean circulation.»

«At first, tropical ocean temperature contrast between Pacific and Atlantic causes slow climate variability due to its large thermodynamical inertia, and then affects the atmospheric high - pressure ridge off the California coast via global teleconnections.

Discussions dealing with ocean - climate coupling concentrated on ocean - atmosphere variability in the Atlantic and its relationship to European climate.

He believes that changes in ocean circulation have warmed the Atlantic and increased hurricane activity in the past decade and that this is simply the result of normal oscillation in natural climate cycles.

Due to shrinkage of its connection with the Atlantic Ocean, the Mediterranean Sea was transformed into a giant saline lake that was partially evaporated by the dry climate of the region, six million years ago.

Fake paper fools global warming naysayers The man - made - global - warming - is - a-hoax crowd latched onto a study this week in the Journal of Geoclimatic Studies by researchers at the University of Arizona's Department of Climatology, who reported that soil bacteria around the Atlantic and Pacific oceans belch more than 300 times the carbon dioxide released by all fossil fuel emission, strongly implying that humans are not to blame for climate change.

The study, by an international team of scientists led by the University of Cambridge, examined how changes in ocean currents in the Atlantic Ocean were related to climate conditions in the northern hemisphere during the last ice age, by examining data from ice cores and fossilised plankton shocean currents in the Atlantic Ocean were related to climate conditions in the northern hemisphere during the last ice age, by examining data from ice cores and fossilised plankton shOcean were related to climate conditions in the northern hemisphere during the last ice age, by examining data from ice cores and fossilised plankton shells.

The research team found that deoxygenation caused by climate change could already be detected in the southern Indian Ocean and parts of the eastern tropical Pacific and Atlantic basins.

«This implies that a very rapid transmission process must have operated, that linked rapid climate change around Greenland with the otherwise sluggish deep Atlantic Ocean circulation,» said Gottschalk.

The results, published in the journal Nature Geoscience, show how climate events in the Northern Hemisphere were tightly coupled with changes in the strength of deep ocean currents in the Atlantic Ocean, and how that may have affected conditions across the gocean currents in the Atlantic Ocean, and how that may have affected conditions across the gOcean, and how that may have affected conditions across the globe.

A newly published study published online in the April 24 edition of the Proceedings of the National Academy of Sciences entitled, «Ocean warming since 1982 has expanded the niche of toxic algal blooms in the North Atlantic and North Pacific Oceans,» demonstrates that one ocean consequence of climate change that has already occurred is the spread and intensification of toxic aOcean warming since 1982 has expanded the niche of toxic algal blooms in the North Atlantic and North Pacific Oceans,» demonstrates that one ocean consequence of climate change that has already occurred is the spread and intensification of toxic aocean consequence of climate change that has already occurred is the spread and intensification of toxic algae.

PORTLAND, OREGON — Oceanographers have put a stethoscope on the coursing circulatory system of the Atlantic Ocean, and they have found a skittish pulse that's surprisingly strong in the waters east of Greenland — discoveries that should improve climate models.

For decades, research on climate variations in the Atlantic has focused almost exclusively on the role of ocean circulation as the main driver, specifically the Atlantic Meridional Overturning Circulation, which carries warm water north in the upper layers of the ocean and cold water south in lower layers like a large conveyor belt.

«Whereas the Pacific was previously considered the main driver of tropical climate variability and the Atlantic and Indian Ocean its slaves, our results document a much more active role for the Atlantic Ocean in determining conditions in the other two ocean baOcean its slaves, our results document a much more active role for the Atlantic Ocean in determining conditions in the other two ocean baOcean in determining conditions in the other two ocean baocean basins.

«However, the recent climate anomalies as a result of climate change and warming of the Atlantic Ocean have created severe droughts in the tropics, causing major impacts on forests.»

Using multiple climate models from around the world, Clement's research team removed the ocean circulation from the analysis to reveal that variations in the Atlantic climate were generally the same.

Gentlepeople, well done on nipping any controversy in the bud — as usual; though I'm left wondering if the warming trend isn't related to a subject that i'd like to see Real Climate Address more often; The possible shut - down of The North Atlantic Conveyor — as extreme warming of the Southern Oceans, along with the plunging of Europe into a new Ice Age would be the result of this, as I'm sure you all know.

Climate change is playing a major role in the slowing down of the circulation of the Atlantic Ocean.

Similarly, if as a number of recent studies suggest, anthropogenic climate forcing leads to a greater tendency for the positive phase of the North Atlantic Oscillation (NAO)[or related «Arctic Oscillation» (AO)-RSB- pattern, we would expect increased baroclinicity and storminess over a substantial region of the mid-latitude North Atlantic ocean and neighboring western Europe..

«Drought years» happen on average every five years in the Amazon and are typically a result of changes to wind and weather patterns brought about by warming in the Atlantic Ocean during events of the climate phenomenon El Niño.

... The finding indicates that the primary driver of climate like the south - westerlies that brings monsoon into the country from South Atlantic Ocean, the north - easterlies that lead to Tropical dry climate in the North and the ITCZ, which is sandwiched between the air masses, could be affected by changes in ENSO events.

«You can totally turn off ocean circulation, have Arctic sea ice advance all the way across the North Atlantic, and you still will have a warmer climate during the Younger Dryas than the Oldest Dryas because of the carbon dioxide,» Carlson says.

Decadal variability is a notable feature of the Atlantic Ocean and the climate of the regions it influences.

We defend marine species and habitat from overfishing, offshore oil drilling, the impacts of climate change and ocean acidification, and a host of other threats — from the Sea of Cortez to the Gulf of Mexico and the Atlantic, the Hawaiian archipelago to Japan, and Antarctica north to the Arctic Circle.

The Atlantic Multidecadal Oscillation (AMO), Pacific Decadal Oscillation (PDO), North Atlantic Oscillation (NAO), and El Niño - Southern Oscillation (ENSO) have all been found to significantly influence changes in surface air temperature and rainfall (climate) on decadal and multi-decadal scales, and these natural ocean oscillations have been robustly connected to changes in solar activity.

Broecker's articulation of likely effects of freshwater outbursts in the North Atlantic on ocean circulation and global climate (Broecker, 1990; Broecker et al., 1990) spurred quantitative studies with idealized ocean models (Stocker and Wright, 1991) and global atmosphere — ocean models (Manabe and Stouffer, 1995; Rahmstorf 1995, 1996).

Such are the questions tackled here during a trip to hominid settings in Europe and Africa, followed by an over-the-pole flight that looks down on the probable origins of the abrupt climate changes: great whirlpools in the North Atlantic Ocean near Greenland.

Manabe, S., and R.J. Stouffer, 1995: Simulation of abrupt climate change induced by fresh water input to the North Atlantic Ocean.

Tang, Y.M., and M.J. Roberts, 2005: The impact of a bottom boundary layer scheme on the North Atlantic Ocean in a global coupled climate model.

Shaffrey, L., and R. Sutton, 2004: The interannual variability of energy transports within and over the Atlantic Ocean in a coupled climate model.

For example, recent studies have found simultaneous changes in the Arctic ocean summertime ice cover, and North Atlantic wind climate.