Sentences with phrase «sea ice retreats more»

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.

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.

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.

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.

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.

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

French Prime Minister Manuel Valls visited the Mer de Glace (the Sea of Ice) Friday on Mont Blanc, where the retreating glacier has been documented for more than a century, through water colors painted before the invention of the still camera, black - and - white photos depicting a then - modern steam locomotive chuffing alongside the ice and today's high - definition satellite photIce) Friday on Mont Blanc, where the retreating glacier has been documented for more than a century, through water colors painted before the invention of the still camera, black - and - white photos depicting a then - modern steam locomotive chuffing alongside the ice and today's high - definition satellite photice and today's high - definition satellite photos.

It's worth posting the voices of a few more scientists to address persistent questions here about a possible connection between retreating Arctic Ocean sea ice and seabed volcanic activity two miles below — including a Vesuvius - size eruption in 1999.

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).

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.

The paper, combining evidence of driftwood accumulation and beach formation in northern Greenland with evidence of past sea - ice extent in parts of Canada, concludes that Arctic sea ice appears to have retreated far more in some spans since the end of the last ice age than it has in recent years.

Cohen focuses on a hypothesis that he's been assessing for quite a few years — a relationship between retreating sea ice, expanding Siberian snows and more widespread cold outbreaks.

As the sea ice retreats, the water absorbs more sunshine and warms faster.

[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.

Francis & Hunter found that the downward long - wave radiation associated with a retreating sea - ice extent is more important (a stronger effect) than cloud modulation of SW also associated with the sea - ice extent.

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.

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.

It is clear that these passages have been more open than today during certain periods of the past and also more closed during other periods, IOW the currently observed retreat of multi-year Arctic sea ice extent is nothing unusual or unprecedented.

We know that temperatures are rising; the sea level is rising too; sea ice is thinning; permafrost is melting; glaciers are in world - wide retreat; ElNino events are becoming more frequent, persistent and intense; and on and on.

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.»

As ice shelves collapse the glaciers behind them retreat more quickly, causing further sea - level rise.

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...

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).

Another difference is that in 2013 there were areas of decreased concentration north of the Kara and Barents sea; this year, most of the Arctic sea ice prevails at higher concentrations, indicating a more consolidated and possibly thicker ice cover, which is more resilient to melt and retreat.

Both Russia's Northern Sea Route and Canada's fabled Northwest Passage offer faster routes than comparable southern routes, which means that more global shipping traffic will begin to pass along both routes as sea ice retreaSea Route and Canada's fabled Northwest Passage offer faster routes than comparable southern routes, which means that more global shipping traffic will begin to pass along both routes as sea ice retreasea ice retreats.

Any methane released from under retreating ice sheets is more likely to find its way into the atmosphere than methane released from deep - sea methane hydrates, because the methane - consuming seabed sediments and the overlying sea water are absent in Antarctica.

To make matters worse, now - dark areas of open ocean — the result of retreating sea ice — are absorbing more energy from the sun.

Because of its cold - adapted features and rapid warming, climate change impacts on Alaska are already pronounced, including earlier spring snowmelt, reduced sea ice, widespread glacier retreat, warmer permafrost, drier landscapes, and more extensive insect outbreaks and wildfire, as described below.

«Climate models have predicted a retreat of the Arctic sea ice; but the actual retreat has proven to be much more rapid than the predictions,» said Claire Parkinson, a climate researcher at NASA Goddard.

On the Canadian side, sea ice in summer is expected to be thin and retreat more quickly than the last year.

Scientists have recently observed major changes in these glaciers: several have broken up at the ocean end (the terminus), and many have doubled the speed at which they are retreating.2, 5 This has meant a major increase in the amount of ice and water they discharge into the ocean, contributing to sea - level rise, which threatens low - lying populations.2, 3,5 Accelerated melting also adds freshwater to the oceans, altering ecosystems and changing ocean circulation and regional weather patterns.7 (See Greenland ice sheet hotspot for more information.)

But I'd bet that the increase in Arctic sea ice reported by Russian studies from the 1940s to the1970s had something to do with the cooling trend over those years, while the sea ice retreat since 1979 had something to do with the more recent warming trend there.

Sea ice, which even in winter has been in retreat for decades, will remain more or less steady in the immediate future, according to new research.

It will also confirm the accelerated rate of change for impacts such as sea - level rise, the steady retreat of Arctic sea ice and quickened melting of ice sheets and glaciers, as well as offer more detail on scenarios that will shape international negotiations over both short - term and long - term greenhouse gas emissions, including how long «business as usual» can be sustained without dangerous risk.

Rigor et al.; 4.2 million square kilometers; Statistical — age estimates In comparison to 2007 and 2008, there is much more first year (FY) ice in the Beaufort and Chukchi Seas in 2009, which we expect to precondition this area for a more extensive retreat than in 2007 and 2008.

Sea Ice in its «Death Spiral» Scientist Claims Arctic Just Witnessed Fastest August Ice Retreat in History Satellite Images Reveal Two of Greenland's Biggest Glaciers are Losing More Ice

One of the perverse effects of climate change, and of the fact that the poles are warming up faster than the rest of the planet, is that Arctic sea ice is retreating more than we've ever seen before, opening up the Arctic sea to oil shipping and drilling.

Thus, sea ice has melted at an unprecedented rate and is now caught in a vicious cycle known as the ice - albedo feedback: as sea ice retreats, sunshine that would have been reflected into space by the bright white ice is instead absorbed by the ocean, causing waters to warm and melt even more ice.

The oceans are rising; mountain glaciers are retreating; polar sea ice is melting; the very timing of the seasons is changing, and erratic and severe weather is more common than just a few years ago.

Read more: Mongabay Arctic Ice Melt Arctic Sea Ice Melt 20 Years Ahead of Schedule, Scientist Maintains Tipping Point Assertion NASA Confirms Dramatic Thinning of Arctic Sea Ice - Multi-year Ice the Size of Alaska Lost Arctic Just Witnessed Fastest August Ice Retreat in History

Retreating glaciers, thinning Arctic ice, shorter Winters, hotter average night time temperatures, advancing tropical zones, visible sea level rise, more energetic weather systems, extreme cold spells in temperate zones, thawing permafrost, escalating methane releases from artic tundra,,,,,,.

Earlier this year, climate scientist Marco Tedesco of Columbia University published data supporting an earlier proposal that the retreat of Arctic sea ice has disrupted the polar jet stream, causing weather systems to meander more slowly from west to east.

Climate scientist Claire Parkinson, from NASA Goddard Space Flight Center, Greenbelt, Maryland, says, «Climate models have predicted a retreat of the Arctic sea ice; but the actual retreat has proven to be much more rapid than the predictions.