Sentences with phrase «polar sea ice from»

These line graphs plot monthly deviations and overall trends in polar sea ice from 1979 to 2017 as measured by satellites.

Not exact matches

False assumptions on starvation «Unless you've been living under a rock the last few decades, you're aware that Arctic Sea ice is melting, and that this is potentially bad news for polar bears,» she said, adding that until now, the prevailing belief has been that «energy from food on land is largely inconsequential.»

A new University of Washington study, with funding and satellite data from NASA and other agencies, finds a trend toward earlier sea ice melt in the spring and later ice growth in the fall across all 19 polar bear populations, which can negatively impact the feeding and breeding capabilities of the bears.

Such erosion can result from any number of factors, including the simple inundation of the land by rising sea levels resulting from the melting of the polar ice caps.

The researchers identified several key circulation patterns that affected the winter temperatures from 1979 to 2013, particularly the Arctic Oscillation (a climate pattern that circulates around the Arctic Ocean and tends to confine colder air to the polar latitudes) and a second pattern they call Warm Arctic and Cold Eurasia (WACE), which they found correlates to sea ice loss as well as to particularly strong winters.

Sea ice - associated decline in body condition leads to increased concentrations of lipophilic pollutants in polar bears (Ursus maritimus) from Svalbard, Norway.

The data to assess sea - ice coverage come from polar - orbiting satellites carrying passive - microwave sensors that can see through clouds.

Mori et al. identified two circulation patterns that drove winter temperatures in Eurasia from 1979 to 2013: the Arctic Oscillation (which confines colder air to the polar latitudes) and a pattern dubbed «Warm Arctic and Cold Eurasia» (WACE), which correlated both to sea - ice loss in the Barents - Kara Sea and to particularly cold winters; its impact has more than doubled the probability of severe winters in central Eurassea - ice loss in the Barents - Kara Sea and to particularly cold winters; its impact has more than doubled the probability of severe winters in central EurasSea and to particularly cold winters; its impact has more than doubled the probability of severe winters in central Eurasia.

«With most [species], we can identify a localized threat, but the threat to the polar bear comes from global influences on sea ice.»

Reviews range from simple comments such as «this is a good piece of science journalism» to detailed scientific explanations such as how «polar ice cap» fails to distinguish between land ice and sea ice.

Rising polar temperatures caused the average thickness of winter Arctic sea ice to decrease from about 12 feet to 6 feet between 1978 and 2008, and thinner ice melts more readily.

(This status allowed the Administration to create a special rule exempting greenhouse gas emissions — which are, through global warming, melting the artic sea ice used by the polar bears for hunting — from regulation under the Endangered Species Act.)

Because Kaktovik's polar bears seem especially susceptible to the Arctic's shrinking sea ice, researchers are concerned they may start relying more heavily on nutrient - poor food from land.

Because of the warming, «there are some potentially catastrophic events that must be considered,» including sea level rise from melting polar ice sheets, according to the document.

Professor Mark Williams said: «The range of environments we are working with is remarkable — from polar ice and snow layers to deep lake and sea floors to the skeletons of reef corals and stalactites in caves.

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.)

The Arctic Ocean's sea ice and waters are habitat for many imperiled species, from polar bears to bowhead whales — and they all face the threat of dirty fossil - fuel development.

a) Satellite image showing fast disintegration of sea ice over a polar continental shelf; b) Zoobenthos on an Antarctic continental shelf; c) Examples of sea mosses (specimens on the left are from an open - water location and hence have had more plankton to feed on); and d) Dead bryozoan and other benthic skeletons covering the seabed, most likely to be buried, sequestering their blue carbon in the seabed.

Sea ice also provides crucial coastal protection in the Arctic, hunting grounds for local tribes, and habitats for creatures from polar bears to seals.

Mitrovica, J. X., Tamisiea, M. E., Davis, J. L. & Milne, G. A. Recent mass balance of polar ice sheets inferred from patterns of global sea - level change.

Antarctic sea ice is growing, while Arctic ice shrank by 10 percent since the first measurements of polar ice from satellites in 1979.

The crew set out from San Francisco in 1879, hoping to prove the popular theory that the polar sea was free of ice past the Bering Strait, but those hopes are soon dashed when the Jeannette becomes trapped in ice — where it stayed for the next 21 months.

On the other hand, during those periods between widespread glaciation, the water had melted from the ice sheets and polar areas, flowed, back into the oceans and sea level was as high or higher than now.

And especially now with human development and climate change, the world is being altered at an incredible pace — from rising seas, disappearing polar ice, to our major rivers and estuaries and how they have been changed by us.

★ Mika Rottenberg: «Bowls Balls Souls Holes» (through June 14) The centerpiece of this show, a delirious, 28 - minute video called «Bowls Balls Souls Holes,» takes viewers on a mind - blowing trip through time and space, from a Harlem bingo parlor to melting ice in a polar sea and from a seedy urban hotel to the subterranean depths of a parallel universe.

«The Interior Department declared the polar bear a threatened species Wednesday, saying it must be protected because of the decline in Arctic sea ice from global warming.»

The key danger to polar bears is malnutrition or starvation due to habitat loss: Polar bears hunt seals from a platform of sea ice.

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.

Researchers Flee Stranded Bear - Scientists from the Wildlife Conservation Society had their field research on ecological impacts of eroding Arctic coasts near Prudhoe Bay interrupted by a polar bear that was stuck ashore because the sea ice in that part of Alaska was far offshore.

One related development is a proposal, mentioned in the article, from a group of scientists focused on sea ice and polar bears.

Meeting in Tromso, Norway, representatives from the five signatories — the United States, Norway, Canada, Russia and Denmark — said that worldwide agreement and action would be needed to reduce the risk, driven by accumulating greenhouse gases, that polar bears would lose their sea - ice habitat in summers later this century.

(09/01/2011) Recent, unprecedented walrus haul - outs and increased instances of long - distance swims by polar bears show the direct impacts on wildlife of dwindling Arctic sea ice from climate change.

Although the alarmist side constantly moves the goal posts [from runaway global warming, to drowning polar bears, to catastrophic Greenland and Antarctic melting, to rising sea levels, to disappearing sea ice, to «global cooling proves global warming», etc., etc.], the simple fact remains that the UN / IPCC has been consistently wrong from AR - 1 through AR - 4, and the Gore / Hansen duo has been spectacularly wrong.

Atmospheric carbon — like efficiency — is invisible, but the damage — everywhere — is all too visible, from melting polar ice caps and rising seas, to killer heatwaves, droughts, floods, hurricanes and nor» easters.

The low - lying Pacific Island country of Kiribati is one of many micro-nations in danger of serious damage and even inundation from rising sea levels caused by melting polar ice and increasingly turbulent global weather.

Warmer temperatures from climate change are forcing polar bears to swim longer distances to find stable sea ice.

The International Conservation Union, in its latest red list of endangered wildlife, gave polar bears threatened status in May, projecting a decline of 30 percent by midcentury from current populations, mainly due to projected losses of sea ice in a warming world.

Sea ice loss from climate change is causing polar bears to swim longer distances to find stable ice or to reach land, resulting in greater risk to their cubs, according to a new paper co-authored by a WWF expert.

According to a Norwegian news outlet yesterday, Jon Aars (Fig. 1, below), from the Norwegian Polar Institute, confirms that this has been an excellent year for polar bear cubs around Svalbard because there has been abundant sea ice near denning areas on the east coast.

Climate change is pulling the sea ice out from under polar bears» feet, forcing some to swim longer distances to find food and habitat.

-LRB-- NAO) This sea ice then melts in the Sub Polar Atlantic, releasing fresh water into the sub - polar Atlantic waters, which in turn impedes the formation of NADW, which slows down the thermohaline circulation causing warm air not to be brought up from the lower latitudes as far north as previous while in lessening amounts.

NEW evidence has cast doubt on claims that the world's ice - caps are melting, it emerged last night. Satellite data shows that concerns over the levels of sea ice may have been premature. It was feared that the polar caps were vanishing because of the effects of global warming. But figures from the respected US National -LSB-...]

If you'll recall from my previous post, polar bears seem to have barely survived the extensive sea ice coverage during the Last Glacial Maximum — in other words, too much ice (even over the short term) is their biggest threat.

Rapidly rising seas resulting from melting glaciers as well as polar ice sheet nearly wiped out the Great Barrier Reef some 125,000 years earlier, according to University of Sydney researchers.

Some mechanisms for that are hypothesized, e.g. methane release from polar regions, increased melting of Greenland leading to stopping the Gulf Stream, rapid reduction of Arctic sea - ice and its positive feedback, collapse of Antarctic ice shelves, loss of the Amazon, large volcanoes, asteroid impacts, unexpected solar variation.

Biologists are warning that warmer temperatures from climate change are forcing polar bears to swim longer distances to find stable sea ice.

This is devastating news for polar bears, who are suffering as their sea - ice habitat melts from under their paws.

Today, I'll take a look at sea ice and ringed seal habitat in the Gulf of Boothia and M'Clintock Channel, as well as information from a study on polar bear diets, which together shine some light on why the Gulf of Boothia is such a great place for polar bears.

Thus, the concept of increasing CO2 is causing increasing sea level rise from polar ice melt embodies two assumptions that need to be established with physical evidence: 1) the extent to which increased CO2 will cause increased temperatures, assumptions or models do not suffice; and 2) the extent to which increased temperatures will cause Antarctic ice melt.

Franz Josef Land provides the most stable sea ice habitat for Barents Sea polar bears because it is largely beyond the influence of warm water influxes from the North Atlantsea ice habitat for Barents Sea polar bears because it is largely beyond the influence of warm water influxes from the North AtlantSea polar bears because it is largely beyond the influence of warm water influxes from the North Atlantic.