Sentences with phrase «sea ice retreat in»

Seasonal sea ice retreat in 2012 began with a major reduction event in early June (Figure 2) associated with persistent high pressure over the Beaufort Sea and low pressure over the Kara Sea, now referred to as the Arctic Dipole (AD) weather pattern (see discussion of the AD in previous Outlooks).

Recent estimates indicate that the Antarctic sea ice cover is expanding at a statistically significant rate with a magnitude one - third as large as the rapid rate of sea ice retreat in the Arctic.

Second, the rate of sea ice retreat in recent years is also unprecedented in the historical record.

«Unraveling a major cause of sea ice retreat in the Arctic Ocean.»

This is perhaps the least newsworthy item for readers here, given how much The Times has covered the mix of issues arising as summer sea ice retreats in the Arctic and pressures grow to exploit new shipping routes and northern resources.

As the sea ice retreats in summer the ocean warms up (to +7 ºC in 2011) and this warms the seabed too.

«As the sea ice retreats in summer the ocean warms up (to 7C in 2011) and this warms the seabed too.

Not exact matches

Evidence of past glacial advance and retreat is also more easily observed in the Dry Valleys, providing a window into the past behavior of the vast Antarctic ice sheets and their influence on global sea levels.

The case of this one polar bear and the failure of her offspring to survive in the new environmental conditions of the Arctic doesn't bode well for the future of the species, especially as Arctic sea ice continues to retreat at a record pace.

One «growing phenomenon in the Arctic [is] polar bears foraging on land as their primary habitat, sea ice, retreats,» Kintisch writes, which makes field work even more dangerous, and difficult, than it would be otherwise.

Arctic sea ice dwindles and glaciers atop mountains in more temperate and even tropical lands retreat.

«Today, the Pine Island and Thwaites glaciers are grounded in a very precarious position, and major retreat may already be happening, caused primarily by warm waters melting from below the ice shelves that jut out from each glacier into the sea,» said Matthew Wise of Cambridge's Scott Polar Research Institute, and the study's first author.

The biggest changes were seen in West Antarctica, where more than a fifth of the ice sheet has retreated across the sea floor faster than the pace of deglaciation.

In addition, both studies have yielded valuable data that can be integrated into ecosystem models — which are in turn essential to forecasts of how the retreat of sea ice will affect the Arctic ecosysteIn addition, both studies have yielded valuable data that can be integrated into ecosystem models — which are in turn essential to forecasts of how the retreat of sea ice will affect the Arctic ecosystein turn essential to forecasts of how the retreat of sea ice will affect the Arctic ecosystem.

As the Arctic warms, retreating sea ice is revealing winners and losers in ecosystems under siege.

«It is conceivable that part of that litter then drifts even farther to the north and northwest, and reaches the Fram Strait,» states the AWI biologist, adding, «Another cause for litter in the Arctic could be the retreat of the Arctic sea ice.

Around 11,000 years ago, as the last ice sheets retreated from Norway and the Norwegian Sea, Atlantic water flowed in and warmed the bottom by about 9 degrees Fahrenheit.

Furthermore, unraveling the causes of sea ice retreat should help us understand the mechanisms behind climate change on a global level, which is interrelated to the ice reduction in the Arctic ocean.»

«This study was the first to quantitatively elucidate that ice - ocean albedo feedback is a primary driver of seasonal and yearly variations in Arctic sea ice retreat,» says Kay I. Ohshima.

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.

Data collected by ship and model simulations suggest that increased Pacific Winter Water (PWW), driven by circulation patterns and retreating sea ice in the summer season, is primarily responsible for this OA expansion, according to Di Qi, the paper's lead author and a doctoral student of Liqi Chen, the lead PI in China.

However, in recent years, the sea ice has retreated and with it the region of maximum heat exchange.

«Retreating sea ice linked to changes in ocean circulation, could affect European climate.»

Under these conditions, a disproportionately rapid retreat of summertime sea ice in the central Arctic Ocean over the course of the next few decades, followed by its complete disappearance — depending on how quickly CO2 levels rise — roughly 250 years from now, is to be expected.

The melting and retreating of Arctic sea ice in the summer months also has allowed PWW to move further north than in the past when currents pushed it westward toward the Canadian archipelago.

The revised estimate for sea - level rise comes from including new processes in the 3 - dimensional ice sheet model, and testing them against past episodes of high sea - levels and ice retreat.

A new study shows that the magnitude of surface darkening in the Arctic (due to the retreat of sea ice) is twice as large as that found in previous studies.

The retreat of sea ice in the Arctic Ocean is diminishing Earth's albedo, or reflectivity, by an amount considerably larger than previously estimated, according to a new study that uses data from instruments that fly aboard several NASA satellites.

The publicly available report also divides the Arctic Ocean into 12 regions, and calculates the changes in the dates of spring sea ice retreat and fall freeze - up from NASA satellite images taken between 1979 and 2013.

The predictable retreat of Arctic sea ice under global warming presents one last opportunity to adopt effective marine management practices before, rather than after, an ocean is opened up to development, says Lisa Speer of NRDC in New York City, who co-authored the workshop report.

In the case of Arctic whales, the changes in sea ice might benefit their populations, at least in the short term: the loss and earlier retreat of sea ice opens up new habitats and, in some areas of the Arctic, has also led to an increase in food production and the length of their feeding seasoIn the case of Arctic whales, the changes in sea ice might benefit their populations, at least in the short term: the loss and earlier retreat of sea ice opens up new habitats and, in some areas of the Arctic, has also led to an increase in food production and the length of their feeding seasoin sea ice might benefit their populations, at least in the short term: the loss and earlier retreat of sea ice opens up new habitats and, in some areas of the Arctic, has also led to an increase in food production and the length of their feeding seasoin the short term: the loss and earlier retreat of sea ice opens up new habitats and, in some areas of the Arctic, has also led to an increase in food production and the length of their feeding seasoin some areas of the Arctic, has also led to an increase in food production and the length of their feeding seasoin food production and the length of their feeding season.

Arctic sea ice, in retreat for years, shrank to its lowest extent in recorded history this past summer.

After 8 years of decay of its ice shelf, Zachariæ Isstrøm, a major glacier of northeast Greenland that holds a 0.5 - meter sea - level rise equivalent, entered a phase of accelerated retreat in fall 2012.

Dr Ohneiser says that one of the key implications of the study is that changes in global sea - level are uneven when ice sheets expand or retreat.

The only way that significant amounts of this mud could have been deposited as sediment in the sea would be if the ice sheet had retreated inland and eroded these rocks, say the team.

The dramatic retreat of Arctic sea ice in recent years is changing disease patterns, altering the local food web and lowering the region's ability to reflect sunlight, according to two new studies.

«We found that the Antarctic ice sheet had an uneven effect on the global sea level because its growth resulted in a complex interplay between gravitational and rotational effects and the deformations to Earth's crust caused by ice advance and retreat,» he says.

They are identifiable in sea level rise, altered rainfall patterns, retreat of Arctic sea ice, ocean acidification, and many other aspects of the climate system.

The abrupt changes seen in the Greenland ice cores are due to sea - ice changes and the slower changes are the growth or retreat of continental ice sheets.

Past ice - sheet behaviour: retreat scenarios and changing controls in the Ross Sea, Antarctica.

The retreat of these glaciers in itself will have a negligible effect on sea level, since most of the ice that has retreated was in the water already.

The 14C Record of Late Pleistocene ice advance and retreat in the central Ross Sea, Antarctica.

The second error is obvious from the fact that the recent warming is seen in the oceans, the atmosphere, in Arctic sea ice retreat, in glacier recession, earlier springs, reduced snow cover etc., so even if all met stations were contaminated (which they aren't), global warming would still be «unequivocal».

«the recent warming is seen in the oceans, the atmosphere, in Arctic sea ice retreat, in glacier recession, earlier springs, reduced snow cover etc...».

Recent glacial history and rapid ice stream retreat in the Amundsen Sea.

Especially in West Antarctica, where much of the ice sheet sits below sea level, complex interactions at the edge of the ice sheet can sensitively affect the rate of ice - sheet retreat.

Since IPCC (2001) the cryosphere has undergone significant changes, such as the substantial retreat of arctic sea ice, especially in summer; the continued shrinking of mountain glaciers; the decrease in the extent of snow cover and seasonally frozen ground, particularly in spring; the earlier breakup of river and lake ice; and widespread thinning of antarctic ice shelves along the Amundsen Sea coast, indicating increased basal melting due to increased ocean heat fluxes in the cavities below the ice shelvsea ice, especially in summer; the continued shrinking of mountain glaciers; the decrease in the extent of snow cover and seasonally frozen ground, particularly in spring; the earlier breakup of river and lake ice; and widespread thinning of antarctic ice shelves along the Amundsen Sea coast, indicating increased basal melting due to increased ocean heat fluxes in the cavities below the ice shelvSea coast, indicating increased basal melting due to increased ocean heat fluxes in the cavities below the ice shelves.

Glacial Isostatic Adjustment (GIA) occurs in response to retreating ice from the last glacial period, where around most of the world, land is subsiding at a fraction of a millimetre per year, compounding the problem of sea - level rise.

Pine Island Glacier could collapse — stagnate and retreat far up into the bay, resulting in rapid sea level rise — within the next few centuries, raising global sea levels by 1.5 m11, 12, out of a total of 3.3 m from the entire West Antarctic Ice Sheet13.

SUMMARY: Climate scientist Paul Beckwith will tell us why sea ice around the world is in retreat, and what it means for our weather.