Sentences with phrase «deep warming of the ocean»

Perhaps the deep warming of the ocean, where 30 % of warming occurs in some estimates, is more significant than we thought.

Not exact matches

Blessed with warm sunny weather all year round (roughly 300 days of sunshine a year), ringed by the Atlantic Ocean on one side and protected on the other by the calm, deep - blue waters of the Tagus River (the longest river in the Iberian Peninsula), this traditionally sophisticated city seems to have it all.

They found glacial fjords hundreds of meters deeper than previously estimated; the full extent of the marine - based portions of the glaciers; deep troughs enabling Atlantic Ocean water to reach the glacier fronts and melt them from below; and few shallow sills that limit contact with this warmer water.

They identified wind patterns that mixed the warmer surface and colder deep waters to cool the ocean's surface and reduce the intensity of the storm.

«The undersides of glaciers in deeper valleys are exposed to warm, salty Atlantic water, while the others are perched on sills, protected from direct exposure to warmer ocean water,» said Romain Millan, lead author of the study, available online in the American Geophysical Union journal Geophysical Research Letters.

Researchers can measure annual changes in how the melt rate occurs, for example, or the effects of a single pulse of warm deep - ocean water.

This water is warming an average of 0.03 degrees Celsius per year, with temperatures at the deepest ocean sensors sometimes exceeding 0.3 degrees Celsius or 33 degrees Fahrenheit, Muenchow said.

Driven by stronger winds resulting from climate change, ocean waters in the Southern Ocean are mixing more powerfully, so that relatively warm deep water rises to the surface and eats away at the underside of theocean waters in the Southern Ocean are mixing more powerfully, so that relatively warm deep water rises to the surface and eats away at the underside of theOcean are mixing more powerfully, so that relatively warm deep water rises to the surface and eats away at the underside of the ice.

In a recent paper published in Nature Geoscience, his team identified two deep underwater cavities beneath the glacier that they note could be pathways for relatively warm ocean water to reach the underside of the glacier, enhancing its melting.

Last year, a study published in Science Advances found that the oceans have been steadily storing more heat since the 1980s and that deeper layers of the ocean are starting to warm up, as well.

Some glaciers on the perimeter of West Antarctica are receiving increased heat from deep, warm ocean currents, which melt ice from the grounding line, releasing the brake and causing the glaciers to flow and shed icebergs into the ocean more quickly.

Map of current land and ice separating the Weddell and Ross seas, courtesy of Wikimedia Commons / Wutsje / CIA Octopuses have made themselves at home in most of the world's oceans — from the warmest of tropical seas to the deep, dark reaches around hydrothermal vents.

Our global climate models zoom down to finer and finer resolutions; our satellites reveal remote corners of the globe; we increase our understanding of the response of giant ice sheets and deep ocean currents to a warming planet.

El Nino's mass of warm water puts a lid on the normal currents of cold, deep water that typically rise to the surface along the equator and off the coast of Chile and Peru, said Stephanie Uz, ocean scientist at Goddard Space Flight Center in Greenbelt, Maryland.

Even as the surface warms, the deeps remain cool, and this cold water will continue to periodically push the ocean out of the El Niño state.

However, when temperatures warm over the Antarctic regions, deep waters rise from the floor of the ocean much closer to the continent.

A new study led by the University of Texas Institute for Geophysics has found that wind over the ocean off the coast of East Antarctica causes warm, deep waters to upwell, circulate under Totten Ice Shelf, and melt the fringes of the East Antarctic ice sheet from below.

At the same time as the surface is cooling, the deeper ocean is warming, which has already accelerated the decline of glaciers in the Amundsen Sea Embayment.»

A March study shows that one large swath of the ice sheet sits on beds as deep as 8,000 feet below sea level and is connected to warming ocean currents.

«Cold, deep water from this little area of the Nordic seas, less than 1 % of the global ocean, travels the entire planet and returns as warm surface water.

So the air was getting colder, but the deep ocean water was getting warmer, during the coldest periods of the Ice Age.

The two measurements, plus warming of the deep ocean, would equal the global sea - level rise of 2.78 millimeters over the last decade.

Deep ocean water, which is relatively warm, has been melting portions of the ice sheet at its base.

The study marks the first time that human influence on the climate has been demonstrated in the water cycle, and outside the bounds of typical physical responses such as warming deep ocean and sea surface temperatures or diminishing sea ice and snow cover extent.

Essentially, the researchers found that deeper warm water is increasingly mixing with the cool layer of water that traditionally lies atop the eastern part of the Arctic Ocean.

Deep - sea oil exploration will probably release future spills, Solomon says, and global warming could destabilize large undersea deposits of frozen methane, leading to local ocean acidification or oxygen depletion (SN 7/31/2010).

That means it sinks into the deeper layers of the ocean, and the contrast between this warm water and the undersea ice canyons contributes an unknown but substantial amount of sea level rise, said Josh Willis, an oceanographer at JPL in Pasadena, California.

In warm years, the hermit crabs can often be found on the island's beaches, in cold winters they withdraw to the deeper reaches of the ocean.

Because such deep seawater circulates from the coast of Antarctica, this deep - water warming implies that the Southern Ocean drove the last major climate change.

Because existing phenomena — such as thermal expansion of water from warming — do not fully explain the corrected sea - level - rise number of 3.3 millimeters, stored heat in the deep ocean may be making a significant contribution, Cazenave said.

With higher levels of carbon dioxide and higher average temperatures, the oceans» surface waters warm and sea ice disappears, and the marine world will see increased stratification, intense nutrient trapping in the deep Southern Ocean (also known as the Antarctic Ocean) and nutrition starvation in the other oceans.

The deep circulation that drives warm surface waters north is weakening, leading to a cooling of the north Atlantic relative to the rest of the oceans.

Now, new evidence from a marine sediment core from the deep Pacific points to warmer ocean waters around Antarctica (in sync with the Milankovitch cycle)-- not greenhouse gases — as the culprit behind the thawing of the last ice age.

One, which the authors themselves note, is that the warming of the Arctic Ocean that is already happening could trap nutrients in deeper, cooler layers that would make them less available to feed algae blooms.

Bacteria, however, have remained Earth's most successful form of life — found miles deep below as well as within and on surface rock, within and beneath the oceans and polar ice, floating in the air, and within as well as on Homo sapiens sapiens; and some Arctic thermophiles apparently even have life - cycle hibernation periods of up to a 100 million years while waiting for warmer conditions underneath increasing layers of sea sediments (Lewis Dartnell, New Scientist, September 20, 2010; and Hubert et al, 2010).

With the removal of the warm surface waters, an upwelling current is created in the east Pacific Ocean, bringing cold water up from deeper levels.

During normal conditions, trade winds blow to the west across the tropical Pacific Ocean, piling up warm surface water in the western Pacific, and cold, deeper water rises up, or upwells, off the west coast of South America.

So forgive me for being off - glacier - topic, but haven't there been recent findings of deep ocean warming (from Scripps Inst.

The accumulation of organic carbon in the deep ocean would limit the release of carbon into the atmosphere as CO2, limiting further warming by this greenhouse gas.

«At the same time as the surface is cooling, the deeper ocean is warming, which has already accelerated the decline of glaciers on Pine Island and Totten.

A group of researchers find a new reason for the current hiatus of global warming: the Atlantic Ocean could be keeping things cooler by drawing heat into its deepest fathoms.

Thus, during an El - Nino, much of the heat content of the Indo - Pacific warm pool moves from being too deep for surface measurements to detect, to being spread out on the surface of the ocean, where surface measurements can detect it.

One of the most plausible reasons for the recent slowdown in warming is that the deep ocean has been acting as a heat sink, taking up more warming than the land has in recent years.

A subsequent study by Balmaseda, Trenberth, and Källén (2013) determined that over the past decade, approximately 30 % of ocean warming has occurred in the deeper layers, below 700 meters.

These oceans can be kept warm despite their great distance from the Sun because of gravitational interactions between the moons and their host planet, and they might support the kind of life found in deep sea vents on Earth.

The highest rates of thinning are where relatively warm ocean currents can access the base of ice shelves through deep troughs [9,10].

The longevity of global warming (Fig. 9) and the implausibility of removing the warming if it is once allowed to penetrate the deep ocean emphasize the urgency of slowing emissions so as to stay close to the 500 GtC target.

Mr. Trenberth was lamenting the inadequacy of observing systems to fully monitor warming trends in the deep ocean and other aspects of the short - term variations that always occur, together with the long - term human - induced warming trend.

Smaller contributions to planetary energy imbalance are from heat gain by the deeper ocean (+0.10 W / m2), energy used in net melting of ice (+0.05 W / m2), and energy taken up by warming continents (+0.02 W / m2).

Southern Ocean deep convection as a driver of Antarctic warming events, Geophysical Research Letters, 43, p. 2192 - 2199.