Sentences with phrase «less sea ice cover»

Less sea ice cover and a shorter ice season allows wind and wave action to attack the previously ice - protected coastline, especially during the autumn storm season.

Barents Sea numbers have probably increased since 2005 and have definitely not declined despite much less sea ice cover.

Sampling areas were split according to their ice cover: North - West (less sea ice cover), South - East (larger amplitude in sea ice extent) and North - East / South - West (NESW) as bears from that zone are more mobile among all regions of Svalbard.

This past September the National Snow and Ice Data Center in Boulder, Colo., which collects polar and ice information for the government, announced that there was less sea ice covering the Arctic Ocean than at any time since satellite measurements began in 1979.

In September 2007 less sea ice covered the Arctic than at any point since the U.S. government began keeping records of its decline.

Additionally, the less sea ice covers the surface of the ocean, the more sunlight is absorbed by the water, which scientists warn could accelerate the Arctic's warming.

Not exact matches

The ice coverage on the Arctic Ocean shriveled last September to 1.32 million square miles, the smallest expanse ever recorded and less than half the area covered by sea ice three decades ago.

If proxy data can confirm that sea ice was indeed the major player in past abrupt climate - change events, it seems less likely that such dramatic abrupt changes will occur due to global warming, when extensive sea - ice cover will not be present.

The findings suggest that while the response of Antarctic summer sea ice to human - caused climate change may be less dramatic than in the Arctic, sea ice cover may have declined by as much as 14 % over the last 100 years.

Summertime sea ice in the Arctic Ocean now routinely covers about 40 percent less area than it did in the late 1970s, when continuous satellite observations began.

If proxy data can confirm that sea ice was indeed the major player in past abrupt climate - change events, it seems less likely that such dramatic abrupt changes will occur due to global warming, when extensive sea - ice cover will not be present.

Sea ice in the Arctic, on which arctic animals hunt, rest, and reproduce, now covers 15 % less area than it did in 1978; it has thinned to an average of 1.8 meters, compared to 3.1 meters in the 1950s.

Also less ice cover allows the vastly warmer sea water to warm the much colder arctic air.

«By «ice - free», scientists usually mean a sea ice extent of less than one million square kilometres, rather than zero sea ice cover.

With impacts on Arctic coastal communities and increases in maritime activities, both observations of changes underway and predictions at the scale of less than a week to several months out are of importance to the research community and those living and operating in ice - covered seas.

Ice cover in the Arctic sea just hit a new low, at 525,000 square miles less than normal.

As the BRT reported, bearded seals prefer foraging in open ice cover where the sea floor is less tan 100 meters deep.

Summer of 2008 shows a large region of less sea ice than normal over the Beaufort Sea compared to 2005 which had less ice cover than normal in the Eastern Siberian Sea and Laptev Ssea ice than normal over the Beaufort Sea compared to 2005 which had less ice cover than normal in the Eastern Siberian Sea and Laptev SSea compared to 2005 which had less ice cover than normal in the Eastern Siberian Sea and Laptev SSea and Laptev SeaSea.

Peak abundances of the small subpolar planktic foraminifer species Turborotalita quinqueloba found in MIS 5e sediments from the southern Lomonosov Ridge close to the Greenland continental margin (Site GreenICE, Fig. 1), a region with a modern perennial sea ice cover, may indicate less sea ice than today45.

(4) Last Interglacial (MIS 5e / Eemian) with a more or less closed sea ice cover situation over Core PS2757 - 8, preventing phytoplankton and sea ice algae productivity, and probably ice - free conditions towards the East Siberian shelf.

Heat from Arctic amplification over normal conditions in these regions is much smaller than on the other side of the pack because the ice covered these seas longer this year; The heat added due to Arctic amplification probably less than 6... and with most of that in the Beaufort, and not in the Chukchi and E. Siberian.

However, to a lesser extent, these turbulent fluxes can also be transmitted through a thinner sea ice cover.

Serreze says if warm air and sea - surface temperatures persist, the 2017 maximum could set yet another record for even less sea - ice cover.

Polar bears are one of the most sensitive Arctic marine mammals to climate warming because they spend most of their lives on sea ice.35 Declining sea ice in northern Alaska is associated with smaller bears, probably because of less successful hunting of seals, which are themselves ice - dependent and so are projected to decline with diminishing ice and snow cover.36, 37,38,39 Although bears can give birth to cubs on sea ice, increasing numbers of female bears now come ashore in Alaska in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea regionsea ice.35 Declining sea ice in northern Alaska is associated with smaller bears, probably because of less successful hunting of seals, which are themselves ice - dependent and so are projected to decline with diminishing ice and snow cover.36, 37,38,39 Although bears can give birth to cubs on sea ice, increasing numbers of female bears now come ashore in Alaska in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea regionsea ice in northern Alaska is associated with smaller bears, probably because of less successful hunting of seals, which are themselves ice - dependent and so are projected to decline with diminishing ice and snow cover.36, 37,38,39 Although bears can give birth to cubs on sea ice, increasing numbers of female bears now come ashore in Alaska in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea regionsea ice, increasing numbers of female bears now come ashore in Alaska in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea regionsea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea regionSea region.45

In August and September 2012, sea ice covered less of the Arctic Ocean than at any other time since at least 1979, when the first reliable satellite measurements began.

It's still cutting - edge research and there's no smoking gun, but there's evidence that with less sea ice, you put a lot of heat from the ocean into the atmosphere, and the circulation of the atmosphere responds to that... We've seen a tendency for autumns with low sea ice cover to be followed by a negative Arctic Oscillation.

There was also less sea ice during this time (1887 - 1945), as the sea ice cover disappeared 1.1 month sooner than it does today.

The extent of Arctic sea ice at the peak of the summer melt season now typically covers 40 percent less area than it did in the late 1970s and early 1980s.

If sea ice cover was 50 % less 5,000 years ago and polar bears were very much alive and well, it is hard to see how claims of their extinction are credible from future ice loss.

More: National Snow and Ice Data Center Arctic Sea Ice Melting Arctic Sea Ice Melt 20 Years Ahead of Schedule - Scientist Maintains Tipping Point Assertion Melting Arctic Ice Increases Permafrost Melting Farther Inland Than Previously Thought Arctic Sea Ice Not Only Covers Less Area, It's Thinner Too: New Data Shows