Sentences with phrase «polar ice scientists»

Not exact matches

When alarmists charged that the polar bear was being hunted to extinction, the outcry sent scientists like Lee Miller and Jack Lentfer (below) off across the ice on a rewarding research trail

Many scientists think these permanently shadowed regions, such as the floors on impact craters in the Moon's polar regions, could hold large deposits or water ice.

Morris uses the information she gathers on these trips to check the accuracy of data collected by a European satellite, Cryosat - 2, that tracks changes in the thickness of polar ice — information that tells scientists how quickly that ice is thawing.

Scientists now believe that the projected decreases in the polar sea ice due to global warming will have a significant negative impact or even lead to extinction of this species within this century.

«I was very happy to see this new work by Kite and Rubin that brings to the fore a process that had escaped notice: the pumping of water in and out of the deep fractures of the south polar ice shell by tidal action,» said Carolyn Porco, head of Cassini's imaging science team and a leading scientist in the study of Enceladus.

If the melting of the polar ice caps injects great amounts of freshwater into the world's oceans, climate scientists fear that the influx could affect currents enough to drastically change the weather on land

Fox accompanies a team of NASA scientists as they drive a refurbished orange Humvee across a frozen channel in the Canadian High Arctic, facing melting sea ice, mechanical breakdown, and the threat of marauding polar bears.

GLITTERING across the briny surface of newly formed sea ice, frost flowers are as bewitching to polar scientists as Homer's sirens — luring them and their instrument - laden sleds to the treacherous boundary between ice and sea.

This year, sea ice in the Arctic reached its smallest maximum extent since satellites began tracking polar ice patterns, according to the National Snow and Ice Data Center, while scientists have also forecast ice - free Arctic summers in two to three decades (ClimateWire, July 16, 201ice in the Arctic reached its smallest maximum extent since satellites began tracking polar ice patterns, according to the National Snow and Ice Data Center, while scientists have also forecast ice - free Arctic summers in two to three decades (ClimateWire, July 16, 201ice patterns, according to the National Snow and Ice Data Center, while scientists have also forecast ice - free Arctic summers in two to three decades (ClimateWire, July 16, 201Ice Data Center, while scientists have also forecast ice - free Arctic summers in two to three decades (ClimateWire, July 16, 201ice - free Arctic summers in two to three decades (ClimateWire, July 16, 2013).

Many human communities want answers about the current status and future of Arctic marine mammals, including scientists who dedicate their lives to study them and indigenous people whose traditional ways of subsistence are intertwined with the fate of species such as ice seals, narwhals, walruses and polar bears.

Although scientists have analysed gases from tiny bubbles trapped in ice cores drilled in polar ice caps, there are doubts about how closely the composition of the bubbles matches that of the atmosphere at the time they were trapped (see New Scientist, Science, 22 August).

In 1959, the U.S. Army Corps of Engineers built the subterranean city under the guise of conducting polar research — and scientists there did drill the first ice core ever used to study climate.

As sea ice decreases dramatically across polar oceans, some scientists see a silver lining: The algal blooms that seem to thrive where ice has recently disappeared could damper climate change by trapping carbon in the deep ocean.

Scientists are testing out a drone that could better map sea ice on a daily basis, and follow polar bear movements

«Life on the ice: For the first time scientists have directly observed living bacteria in polar ice and snow.»

For the past eight years, Operation IceBridge, a NASA mission that conducts aerial surveys of polar ice, has produced unprecedented three - dimensional views of Arctic and Antarctic ice sheets, providing scientists with valuable data on how polar ice is changing in a warming world.

«People have been talking about the possible link between winds and Antarctic sea ice expansion before, but I think this is the first study that confirms this link through a model experiment,» commented Axel Schweiger, a polar scientist at the UW Applied Physics Lab.

Mount Belinda has begun erupting beneath its thick cover of polar ice, allowing scientists their first chance to examine an Antarctic lava flow in action.

But polar scientists say there is still much to learn about what drives the behavior of Antarctic sea ice, which is quite different than its Arctic cousin.

Bacteria, however, have remained Earth's most successful form of life — found miles deep below as well as within and on surface rock, within and beneath the oceans and polar ice, floating in the air, and within as well as on Homo sapiens sapiens; and some Arctic thermophiles apparently even have life - cycle hibernation periods of up to a 100 million years while waiting for warmer conditions underneath increasing layers of sea sediments (Lewis Dartnell, New Scientist, September 20, 2010; and Hubert et al, 2010).

To monitor the Earth's vast, remote expanses of polar ice, scientists rely on observations taken by orbiting satellites.

Now the question is, can the real climate scientists come forward and present the truth about global warming, or are we in for more ridiculous predictions about an ice free arctic by 2013 and the extinction of polar bears?

Indeed, previously scientists thought that the loss of ice mass from Greenland and Antarctica alone was driving a polar shift.

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.

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.»

Here are some possible choices — in order of increasing sophistication: * All (or most) scientists agree (the principal Gore argument) * The 20th century is the warmest in 1000 years (the «hockeystick» argument) * Glaciers are melting, sea ice is shrinking, polar bears are in danger, etc * Correlation — both CO2 and temperature are increasing * Sea levels are rising * Models using both natural and human forcing accurately reproduce the detailed behavior of 20th century global temperature * Modeled and observed PATTERNS of temperature trends («fingerprints») of the past 30 years agree

(As I've noted, scientists have wisely been proposing that special conservation plans be developed in that region for polar bears and other wildlife dependent on sea ice.)

This spring, scientists conducting polar ice and ocean research told me they were unnerved to see a Russian military encampment nearby for the first time.

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....

[April 20, 7:22 a.m. Insert I think this work bolsters the view of scientists who've been calling for a conservation strategy for polar bears and other ice - dependent species focused on areas of the Arctic where sea ice is projected to endure well into this greenhouse - heated era.

Scientists with access to data from Navy submarines traversing underneath the North polar ice cap have warned that there is now a 75 percent chance that within five years the entire ice cap will completely disappear during the summer months.

Scientists believe that the brown bear lineage split over 300,000 years ago to form the polar bear (Ursus maritimus), theorizing that a group of early brown bears became isolated in colder regions and ultimately adapted to life on ice.

Unfortunately, the tough scientific work to clarify ice and sea trends and dynamics has largely been obscured online by coverage focused on an error on Greenland ice loss that many polar scientists say made it into the new edition of the Times Comprehensive Atlas of the World (that's the British Times, just to be clear).

Even with this year's extreme loss, there's still a wide range of predictions among polar scientists of how soon the northernmost ocean will be «ice free» in late summer.

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.

In my piece weighing the merits of very different strategies for giving ice - dependent polar bears a chance in a warming world, I promised I'd post the views of some of the biologists, sea - ice researchers and climate scientists who've been tracking relevant questions.

The energy and physical costs of such long - distance swimming are unknown, but scientists did note polar bears moved, on average, 2.3 times more than when the same individuals were on sea ice.

(Keep in mind that almost all Arctic sea ice researchers add a big caveat when talking of an «ice - free Arctic Ocean,» noting that a big region of thick floes north and west of Greenland will almost surely persist in summers through this century, which is one reason some scientists have proposed targeting polar bear conservation efforts there.)

Determining whether polar ice sheets are shrinking or growing, and what their contribution to changes in sea level is, has motivated polar scientists for decades.

On climate change, the bulletin scientists say it is worsening: after flattening out for some years, global greenhouse gas emissions have resumed their rise, and the levels of the polar ice caps are at new lows.

«Drowned polar bears have not been reported by other scientists, but the hypothesis that a long search for sea ice makes it more likely that bears will get caught in stormy weather and drown is regarded as plausible.»

By Sreeja VN: Sizzling underwater glacial ice, as it melts into warmer sea water, creates one of the loudest natural marine environments, and the air bubbles that pop during the process could help scientists measure the rate of glacier melt and track fast - changing polar environments.

Tagged attacks, besieged, climate change, facts, global warming, Kara Sea, polar bear, Russia, scientists, sea ice, weather station

Changes to polar ice and glaciers and rainfall regimes have already occurred, the scientists said.

Keeling's record of data from Mauna Loa is considered one of the best and most consistent climate records anywhere, though scientists also use other sources for atmospheric data, including samples of air trapped in polar ice, to analyze CO2 levels in past millennia.

«Part of the reason Tom's One Man Epic is taking place now is because of the effect that global warming is having on the polar ice caps... Some scientists have even estimated that the polar ice cap will have entirely melted away by 2014.»

Amid anxieties over the effects of global warming on polar ice, some scientists have dubbed the ice break a geographical rather than a climate situation.

This summer school is aimed at postgraduate students and early career scientists who would like to obtain a solid grounding in polar climate system science, with a particular focus on the atmosphere, ocean and sea ice and their interactions.

AGW climate scientists seem to ignore that while the earth's surface may be warming, our atmosphere above 10,000 ft. above MSL is a refrigerator that can take water vapor scavenged from the vast oceans on earth (which are also a formidable heat sink), lift it to cold zones in the atmosphere by convective physical processes, chill it (removing vast amounts of heat from the atmosphere) or freeze it, (removing even more vast amounts of heat from the atmosphere) drop it on land and oceans as rain, sleet or snow, moisturizing and cooling the soil, cooling the oceans and building polar ice caps and even more importantly, increasing the albedo of the earth, with a critical negative feedback determining how much of the sun's energy is reflected back into space, changing the moment of inertia of the earth by removing water mass from equatorial latitudes and transporting this water vapor mass to the poles, reducing the earth's spin axis moment of inertia and speeding up its spin rate, etc..