Sentences with phrase «sea ice retreat from»

Not exact matches

Sensors that have plumbed the depths of Arctic seas since 2002 have found warm currents creeping up from the Atlantic Ocean and helping drive the dramatic retreat of sea ice there over the last decade.

«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.

Fast - melting Arctic sea ice has forced some 35,000 Pacific walruses to retreat to the Alaska shoreline, scientists from several federal agencies said on Wednesday.

CHICAGO, ILLINOIS — It's not a secret that the Arctic Ocean is turning from white to blue as sea ice retreats.

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.

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.

Dr James Screen from the University of Exeter used a computer model to investigate how the dramatic retreat of Arctic sea ice influences the European summer 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.

About 10,000 years ago, after the glaciers of the Ice Age retreated from the Scandinavian landmass, bands of hunters and fishers moved across the Baltic Sea and into the Finnish wilderness.

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.

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.

Krill require a cover of sea ice to spawn and hide from predators, and recent Antarctic krill declines have been linked to the retreating ice.

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».

Shipp, S.S., Wellner, J.S., and Anderson, J.B., Retreat significance of a polar ice stream: sub-glacial geomorphic features and sediments from the Ross Sea, Antarctica: J.A. Dowdeswell and C. O'Cofaigh (eds.)

Another sign climate change hasn't stopped is that other climate indicators have continued with no signs of reversing, from Arctic sea ice and glacial retreat to rising seas.

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.

From Lawrence Livermore, Ivana Cvijanovic explains retreating Arctic sea ice means more drought for California.

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.

I wonder once the front has retreated from salt water and sea mist that ultracold deep ice could refreeze fresh water and slow the breakup.

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».

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.

I had said that the main forcing for sea ice retreat was from the albedo flip.

My take is that the tug of war over what's causing today's telegenic heat waves, floods, tempests — and even Arctic sea - ice retreats — distracts from the high confidence scientists have in the long - term (but less sexy) picture: that more CO2 will lead to centuries of climate and coastal changes with big consequences for a growing human population (for better and worse in the short run, and likely mostly for the worse in the long run).

There's also new analysis by a team from the Naval Postgraduate school, led by Wieslaw Maslowski, pointing to a complete late - summer retreat of Arctic Ocean sea ice by the end of this decade and possibly 2016.

The retreat of sea ice from the shores in summer to an unprecedented distance is fostering erosion of the shore and increasing radically the amount of swimming bears must do to maintain their accustomed life partly on and partly off dry land.

[Andy Revkin — On Arctic ice trends, I have a post coming shortly on the latest update from the world's leading teams of sea ice experts, showing this year's retreat is unlikely to match last year's, while the long - term trend is still heading toward ever less summer ice.

I also think that proof coming from Arctic sea ice, glacier retreats, etc. might be indications, but are just one step away from the cherry blossoms blooming early, the 26 + storms we had in 2005, Ted Turner's statement, «it's hotter than hell outside», etc. «proofs» that are thrown out by some.

There was an eruption of assertions in recent days that the increasing summer retreats and thinning of Arctic Ocean sea ice might be a result not of atmospheric warming but instead all the heat from the recent discovered volcanoes peppering the Gakkel Ridge, one of the seams in the deep seabed at the top of the world.

The retreat of the Arctic sea ice in recent decades is moving the egdge of the sea ice away from the areas of deep water formation and I would have thought that this would contribute to a weakening of amoc south of Greenland.

They are hoping that Canada and Denmark, which still partly governs Greenland, will develop a particularly aggressive conservation plan for a coastal region in the Arctic, stretching from northern Greenland west to Banks Island in Canada, that is likely to be a haven for bears should sea ice continue its summertime retreat elsewhere up north.

As expected from my 2002 paper, the low A.O. conditions of late have sequestered quite a bit of sea ice the Arctic, which should foster a more moderate retreat of sea ice extent this coming spring, summer and fall.

From the Archives, Oct. 2, 2009 The established icons of Arctic climate change are the polar bear and, to a lesser extent, those indigenous communities that are trying to maintain traditional ways in the face of slushy floes and the relentless erosion of coasts exposed to waves as sea ice retreats.

So, no new alarm bells this time from the glaciologists, but the uncertainties concerning outlet glaciers and the effects of sea ice retreat are still in the air and imply that sea level rise estimates might need to be reconsidered.

It'd be nice to think that the world's nations would move more assertively to cut dependence on fossil fuels in light of new research showing that the retreat of Arctic sea ice from warming will modulate if warming is slowed.

The letter pressed for the department to accept that the risk to bears from retreating sea ice is «imminent,» not a long - term process as the department concluded in its listing of the species as threatened, not endangered, under the Endangered Species Act.

The papers questioned everything from the relative role of natural mechanisms in changes to the climate system vis - à - vis increased CO2 concentrations, the allegedly «unprecedented» nature of modern climate phenomena such as warming, sea levels, glacier and sea ice retreat, and the efficacy and reliability of computer climate models for projecting future climate states.

Sea ice this year is melting at a pace two to four weeks faster than normal as pulses of warm air have been streaming into the Arctic from eastern Siberia and northern Europe and sea ice has retreated early from the Beaufort SSea ice this year is melting at a pace two to four weeks faster than normal as pulses of warm air have been streaming into the Arctic from eastern Siberia and northern Europe and sea ice has retreated early from the Beaufort Ssea ice has retreated early from the Beaufort SeaSea.

A study using Earth Remote Sensing satellite radar interferometry (EERS - 1 and -2) observations from 1992 through 2011 finds «a continuous and rapid retreat of the grounding lines of Pine Island, Thwaites, Haynes, Smith, and Kohler» Glaciers, and the authors conclude that «this sector of West Antarctica is undergoing a marine ice sheet instability that will significantly contribute to sea level rise in decades to centuries to come» (Rignot et al. 2014).

In addition to a groundwater base flow driving the current steady rise in sea level, meltwater from retreating Little Ice Age glaciers undoubtedly contributed as well.

The albedo change resulting from the snowline retreat on land is similarly large as the retreat of sea ice, so the combined impact could be well over 2 W / sq m. To put this in context, albedo changes in the Arctic alone could more than double the net radiative forcing resulting from the emissions caused by all people of the world, estimated by the IPCC to be 1.6 W / sq m in 2007 and 2.29 W / sq m in 2013.»

«Temperatures have been rising for the last 150 years, this decade the warmest ever recorded, sea ice has been retreating, you can take a supertanker from the Atlantic to the Pacific for the first time in human history.

But the continued retreat of sea ice presents a potential problem, especially if scientists stick with the historic data gap from 87 degrees northward to the pole.

From whale bones, 42 Arctic driftwood, 26 and patterns of Arctic shoreline erosion, 25 we also know that during the Holocene, Arctic summer sea ice retreated 1000 kilometers further north than seen today.

There are the famous data sets: the Vostok ice core drilled in the 1970s that looks back about 400,000 years, the Keeling curve started in 1958, data from satellites that watch sea ice retreat starting around 1979.

Where did his «slowdown in the rate of Arctic winter sea ice retreat» quote come from?

Comparing the latest ice age data from Maslanik and Fowler (see Maslanik contribution) for 21 June 2010 (Figure 6) to current (20 July) ice extent data shows that the ice edge has retreated back to the boundary between first - year and multi-year ice pack in the eastern Arctic and in the Beaufort and Chukchi seas.

THERE HAS BEEN A WARMING TREND FROM THE 70s THRU THE LATE 90s,... accompanied by other changes tied to a warming trend (record low arctic sea ice extent & thickness, retreating glaciers, retreating snow lines, warming ocean surface temps, increases in sea height, de-alkalinizing oceans).

There are no radical departures in this report from the previous assessment, published in 2007; just a great deal more evidence demonstrating the extent of global temperature rises, the melting of ice sheets and sea ice, the retreat of the glaciers, the rising and acidification of the oceans and the changes in weather patterns (3).

The two call the relationship «robust»: there might be all sorts of reasons why over a long historical period Arctic sea ice would vary from year to year, but as greenhouse gas levels rise, CO2 becomes the dominant force that makes the ice retreat.