Sentences with phrase «summer sea ice retreated»

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.

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.

Updated, Nov. 25, 10:41 a.m. Ruth Teichroeb, the communications officer for Oceans North: Protecting Life in the Arctic, an initiative of the Pew Charitable Trusts, sent a note this evening about new steps related to an issue I've covered here before — the rare and welcome proactive work by Arctic nations to ban fishing in the central Arctic Ocean ahead of the «big melt» as summer sea ice retreats more in summers in a human - heated climate.

2) The water will warm rapidly due to rapid summer sea ice retreat.

Not exact matches

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.

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.

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.

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

News headlines about record - breaking temperatures, disappearing summer sea - ice and retreating Greenland glaciers frequently remind us that the Arctic is warming more rapidly than any other place on Earth.

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.

The vast, scrabbly sheath of sea ice drifting on the Arctic Ocean ended its annual summer retreat this week, and the result was sobering.

Polar bears may be endangered by hunting, but they are not endangered by the retreat of the summer Arctic sea ice.

It is pushing for new oil and gas drilling in polar bear habitat while biologists for Interior Department, prodded by legal action, recommended the bear be given threatened status under the species act because of the warming of the Arctic and summer retreat of sea ice.

I am very well aware and have previously blogged that there are multiple factors that determine the degree of ice lost any given year — but the literature is clear that even in 2007, global warming played «a large part» (see «What drove the dramatic retreat of arctic sea ice during summer 2007?

The story focuses in part on the pushback against assertions that Arctic sea ice is in a «death spiral» based on the extraordinary retreat in summer 2007.

Yesterday, the Commerce Department and University of New Hampshire released the details of last summer's sonar survey of the sea floor off the Alaskan coast, which was able to push nearly 200 miles farther out toward the North Pole than it had in previous years because of the extraordinary ice retreat of 2007.

A team of scientists is pioneering new strategies for ensuring that polar bears can persist even as summer sea ice — a vital feeding platform — retreats under the climate change that is already in the pipeline no matter how aggressively societies tackle the greenhouse challenge.

Even with the increasing summer retreats of sea ice, which climate scientists say are being driven in large part by global warming caused by humans....

Fourteen research teams studying the impacts of warming on the Arctic Ocean have issued independent projections of how the sea ice will behave this summer, and 11 of them foresee an ice retreat at least as extraordinary as last year's or even more dramatic.

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.

Although again I challenge you to name even five polar scientists who do not think human - caused global warming is the dominant cause of «the increasing summer retreats of sea ice.»

Steven C. Amstrup, the federal biologist who led an analysis last year concluding that the world's polar bear population could shrink two thirds by 2050 under moderate projections for retreating summer sea ice, is once again in the field along Alaska's Arctic coast, studying this year's brood of cubs, yearlings and mothers.

But as a starting point, I'll propose now — and I'll change this if they disagree — the names of some leading scientists in this field who would NOT say there is sufficient evidence to conclude that human - caused global warming IS the main cause of increasing summer retreats of sea ice (although they would say there is strong likelihood that it will eventually dominate):

On the other, however, the big recent summer retreats of the floating sea ice on the Arctic Ocean have created new opportunities, not just to chart possible shipping routes, but to expand surveys of the seabed that might someday lead to deep - ocean Arctic oil and gas drilling.

For the latest forecasts of this summer's Arctic ice retreat, have a look at Sea Ice Outlook 2009, an effort to collate and compare a variety of studies aiming to project the minimum ice extent each summice retreat, have a look at Sea Ice Outlook 2009, an effort to collate and compare a variety of studies aiming to project the minimum ice extent each summIce Outlook 2009, an effort to collate and compare a variety of studies aiming to project the minimum ice extent each summice extent each summer.

Even with the increasing summer retreats of sea ice, which polar scientists say probably are being driven in large part by global warming caused by humans....

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.

Even with the increasing summer retreats of sea ice, which climate scientists say are being driven by global warming caused by humans....

Ms. Gormezano is not a fan of the forecasting methods used by Dr. Amstrup to conclude that a two - thirds reduction in polar bears is possible midcentury if summer sea ice continues retreating.

[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.

The effect of last summer's wind anomaly and ice - albedo feedback may be found in a number of publications, including ours: Zhang, J., R.W. Lindsay, M. Steele, and A. Schweiger, What drove the dramatic retreat of Arctic sea ice during summer 2007?

[UPDATE, 5/20: Natalie Angier has written a nice column on the relatively unheralded walrus, which — like the far more charismatic polar bear — is having a hard time as Arctic sea ice retreats earlier and farther each spring and summer and forms later in the boreal fall.

I've freshly canvassed more than a dozen sea - ice experts to get their latest views on whether the remarkable Arctic ice retreat of last summer will be matched this year.

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.

In part because of warming and the retreat and thinning of Arctic sea ice in summer, this northern sea route is slowly becoming a reality.

And there are fresh findings on why the sea ice around the North Pole has seen dramatic summer retreats lately.

Historically, there had not been enough open water for polar bears in this region to swim the long distances we observed in these recent summers of extreme sea ice retreat.»

Arctic Ocean Ice The latest summary of experts» projections for this summer's retreat of sea ice on the Arctic Ocean is out, and — partly because of different weather patterns than last year — the consensus for the moment is that the remarkable ice loss in 2007 will not be matched this yeIce The latest summary of experts» projections for this summer's retreat of sea ice on the Arctic Ocean is out, and — partly because of different weather patterns than last year — the consensus for the moment is that the remarkable ice loss in 2007 will not be matched this yeice on the Arctic Ocean is out, and — partly because of different weather patterns than last year — the consensus for the moment is that the remarkable ice loss in 2007 will not be matched this yeice loss in 2007 will not be matched this year.

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.

[The move] is aimed at avoiding big ecological disruptions as the expanding summer retreats of sea ice on the Arctic Ocean expose virgin waters.

So if you apply a negative sign to the figure at the bottom of / / seaice.apl.washington.edu/AO/, I would expect colder than normal spring especially in the Eurasian Arctic, less retreat of sea ice this summer, then colder than normal this fall in the Eurasian Arctic....

[1:25 p.m. Updated The National Snow and Ice Data Center has concluded, with a couple of caveats, that the annual summer retreat of Arctic sea ice has endIce Data Center has concluded, with a couple of caveats, that the annual summer retreat of Arctic sea ice has endice has ended.

The same sea - ice experts foreseeing a new record retreat of the Arctic Ocean coverage this summer have explanations for the flow between Greenland and Iceland, too.]

Today, the National Snow and Ice Data Center announced that the annual summer retreat of Arctic Ocean sea ice had reached a new low for the 33 - year satellite era of careful monitoring (1.58 million square miles, or 4.1 million square kilometers), and there is still another week or two of melting before the typical summer ice minimum occuIce Data Center announced that the annual summer retreat of Arctic Ocean sea ice had reached a new low for the 33 - year satellite era of careful monitoring (1.58 million square miles, or 4.1 million square kilometers), and there is still another week or two of melting before the typical summer ice minimum occuice had reached a new low for the 33 - year satellite era of careful monitoring (1.58 million square miles, or 4.1 million square kilometers), and there is still another week or two of melting before the typical summer ice minimum occuice minimum occurs.

Zhang, J., R. Lindsay, M. Steele, and A. Schweiger (2008), What drove the dramatic retreat of arctic sea ice during summer 2007?

The latest movie movie (5) shows the rapid retreat of arctic sea ice in summer 2007 and 2008.

The Davis Strait polar bear subpopulation is said to be «vulnerable» to the supposed effects of global warming because, like Hudson Bay, Davis Strait sea ice retreats every summer, leaving polar bears on land for several months.

And remember, the satellite data are one small part of a vast amount of data that overwhelmingly show our planet is warming up: retreating glaciers, huge amounts of ice melting at both poles, the «death spiral» of arctic ice every year at the summer minimum over time, earlier annual starts of warm weather and later starts of cold weather, warming oceans, rising sea levels, ocean acidification, more extreme weather, changing weather patterns overall, earlier snow melts, and lower snow cover in the spring...

This has never happened before because the sea ice never retreated very much in the summer and the water temperature could not rise above zero because of the ice cover... The permafrost is acting as a cap for a very large amount of methane (CH4), which is sitting in the sediments underneath in the form of methane hydrates.

The sea ice now retreats when it can, during Summer which cools the Arctic Ocean.