Sentences with phrase «ice retreats in»

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

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

Record seasonal retreats of sea ice northward into the Chukchi and Beaufort seas were reported for 2002 - 2005 [258], but they were exceeded by ice retreats in 2007 and 2008 [255].

I sent him my post on new insights about Arctic ice retreats in the last big northern warm period — a 2,500 - year «optimum,» ending around 6,000 years ago, when the region was several degrees warmer on average than 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.

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

After Levy and colleagues noted visible effects of ground ice retreat in Garwood Valley, they began to monitor the valley, combining time - lapse photography and weather - station data at 15 - minute intervals to create a detailed view of the conditions under which the ice, a relict from the last ice age, is being lost.

Now we are having the strongest ice retreat in the Pacific sector and ice pile - up near Greenland — practically the opposite to what Funder's paper suggests for the early Holocene.

Gillis spent time with Hamilton when reporting a fine article on Greenland's ice retreat in 2010.

A new modeling study by the Applied Physics Laboratory at the University of Washington, replaying last summer's Arctic Ocean ice conditions with and without the storm, shows that the short - term influence of all that ice churning probably played almost no role in the final ice retreat in September.

If the July forcing was like that in June and August, which seems to enhance ice retreat in comparison with an average year, we would have had another record low.

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

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.

Further investigation of ice thickness and free ice drift conditions, in addition to persistence of SLP maxima, will provide further insight as to whether convergence (divergence) of sea ice associated with SLP highs (lows) will give rise to increased ice retreat in the Arctic and the Beaufort Sea region in particular.

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).

In the Alaska Arctic sector (Bering, Chukchi and Beaufort Sea), ice retreat in the summer of 2008 progressed somewhat less rapidly over the months of June and July than in 2007, although ice retreat late in the season rivaled or exceeded that of 2007.

The ice retreat in the East Siberian Sea will be late compared with the last year because the area is covered by thicker ice piled up by the winter convergence of sea ice.

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

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

Updated information about ice extent in this region indicates substantial ice retreat in the eastern Barents and the Kara Seas, where ice is now well below climatological extent (Figure 5), with little change in the Greenland Sea and Fram Strait region, where the ice edge is within the decadal mean range except for the southernmost stretches shown in Figure 5.

Mr. Gore showed those videos of ice retreating in Antarctica.

At the same time, substantial and early ice retreat in the Kara Sea (see contribution by Gerland et al., below) has resulted in favorable shipping conditions along the Northern Sea Route (NSR).

Not exact matches

By then, and in just the previous few decades, northern sections of the Larsen Ice Shelf had «retreated significantly,» said Jacobs.

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It cites numerous ways in which climate change is already threatening Europe, including glacial retreat in Europe's mountain systems, flooding from the melting ice - caps and increased water demand in the Mediterranea.

Light blue represents the region in which the glacier's ice front has advanced and retreated over time.

«The question is, will we push carbon dioxide high enough in the future that the Northern Hemisphere remains ice free and the advances and retreats begin again with the Southern Hemisphere ice sheets.»

Southern Hemisphere ice in Antarctica has remained relatively fixed, without any major glacial melting to catalyze advances and retreats.

In comparison, it took the Jakobshavn Isbræ ice stream — a southwest Greenland region with a fast - moving glacier that has been a focal point of scientific examination of ice sheet melt — 150 years to retreat 35 kilometers, said Khan.

The researchers recommend that the National Climate Assessment incorporate the timing of spring ice retreat and fall ice advance as measures of climate change in future reports.

There is consistent evidence of a human presence in the Scandinavian peninsula from around 11,700 years ago, and similarities between stone tool artefacts found in Scandinavia and those seen in both Western Europe and Eastern Europe suggest that several groups may have migrated into the area when the ice retreated.

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.

By reading the ups and downs of organic versus nonorganic sediment in a core, sedimentologists can follow the retreats and advances of ice over the past 20,000 years.

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.

«As the ice sheet rapidly retreated, the hydrates concentrated in mounds, and eventually started to melt, expand and cause over-pressure.

Today, as warming waters caused by climate change flow underneath the floating ice shelves in Pine Island Bay, the Antarctic Ice Sheet is once again at risk of losing mass from rapidly retreating glacieice shelves in Pine Island Bay, the Antarctic Ice Sheet is once again at risk of losing mass from rapidly retreating glacieIce Sheet is once again at risk of losing mass from rapidly retreating glaciers.

Eventually, the floating ice shelf in front of the glaciers «broke up», which caused them to retreat onto land sloping downward from the grounding lines to the interior of the ice sheet.

«If we remove these buttressing ice shelves, unstable ice thicknesses would cause the grounded West Antarctic Ice Sheet to retreat rapidly again in the futuice shelves, unstable ice thicknesses would cause the grounded West Antarctic Ice Sheet to retreat rapidly again in the futuice thicknesses would cause the grounded West Antarctic Ice Sheet to retreat rapidly again in the futuIce Sheet to retreat rapidly again in the future.

«Ice - cliff collapse has been debated as a theoretical process that might cause West Antarctic Ice Sheet retreat to accelerate in the future,» said co-author Dr Robert Larter, from the British Antarctic Survey.

This exposed tall ice «cliffs» at their margin with an unstable height, and resulted in rapid retreat of the glaciers from marine ice cliff instability between 12,000 and 11,000 years ago.

«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 sun and moon tug on the planet, while the drift of continents, changes in ocean currents, and the rebounding of the crust since the retreat of ice age glaciers all shift mass around, altering Earth's moment of inertia and therefore its spin.

And in many places, it's moving faster than the ice is thought to have retreated during the warming period at the end of the last ice age, around 20,000 years ago.

RETREATING ICE Jakobshavn Glacier in western Greenland (its front edge, where ice is calving into the ocean, shown here in 2012) is one of the world's fastest - shrinking glaciers.

The retreat is especially severe in West Antarctica, widely acknowledged as the most vulnerable part of the continent and the region whose glaciers are losing the most ice.

Massive reorganizations of the ocean - atmosphere system, the authors argue, are the key events that link cyclic changes in the earth's orbit to the advance and retreat of ice sheets

But scientists increasingly attribute much of the observed grounding line retreat — particularly in West Antarctica — to the influence of warmer ocean water seeping beneath the ice shelves and lapping against the bases of glaciers, melting the ice from the bottom up.

The incident, which was monitored and recorded by satellite images, aerial photography and a research vessel navigating through the resulting icebergs, is the largest single event in a 30 - year series of ice shelf retreats in the area.