Sentences with phrase «polar ice changing»

Not exact matches

In nature, changes of environmental conditions arise from such sources as the melting of polar ice - caps, explosion of dwarf stars, the fall of night.

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.

Species targeted include the polar bear, already under threat due to climate change: Shrinking sea ice makes it harder for the animals to hunt seals, their main food source.

MISSOULA, Mont. — Starving polar bears, icon of the climate change movement, may be able to adapt to an ice - free summer season in the Arctic after all.

The paper, to appear Sept. 14 in The Cryosphere, is the first to quantify the sea ice changes in each polar bear subpopulation across the entire Arctic region using metrics that are specifically relevant to polar bear biology.

For more than a decade these Earth - observing satellites have provided some of the first environmental measurements on a global scale, including large - scale changes in the mass of polar ice.

The analysis shows that the critical timing of the sea ice break - up and sea ice freeze - up is changing in all areas in a direction that is harmful for polar bears.

When most people think about wildlife in a changing climate, they think of polar bears clinging to melting ice, but even species who have adapted to tropical weather are being impacted by the changes to their environment.

The International Union for the Conservation of Nature (IUCN), which maintains the international «Red List» of threatened species, considers the polar bear «vulnerable» due to climate change - induced retreating sea ice.

The results, in the October 15 Science, agree with theoretical predictions, suggesting that superconducting gravimeters can help satellites chart the earth's gravity to map changes in polar ice cap thickness, seawater levels, atmospheric density and planetary geology.

An international «Red List» of threatened species says that the polar bear is vulnerable to extinction because of a projected decline in its habitat linked to climate change that is melting sea ice in the Arctic.

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

«We must do all we can to help the polar bear recover, recognizing that the greatest threat to the polar bear is the melting of Arctic sea ice caused by climate change,» Salazar said.

IMAGES of polar bears drifting on isolated chunks of ice made the species a poster child for the perils of climate change.

Above all, the new insights into the juvenile fish under the ice are important because it's still impossible to say how polar cod populations will change in the face of climate change.

Interior Secretary Dirk Kempthorne, however, made clear several times during a press conference announcing the department's decision that, despite his acknowledgement that the polar bear's sea ice habitat is melting due to global warming, the ESA will not be used as a tool for trying to regulate the greenhouse gas emissions blamed for creating climate change.

The decision was based on evidence that sea ice is vital for polar bear survival, that this sea ice habitat has been reduced, and that this process is likely to continue; if something is not done to change this situation, the polar bear will be extinct within 45 years, Kempthorne said.

The climate change and melting [of glaciers and polar ice] issue is obviously something that's apparently under way and can not be turned on a dime.

«When we think of climate change having an impact on a mammal species, what comes to mind most immediately is an Arctic animal like the polar bear, which depends on sea ice to survive,» Helgen said.

«The three areas that can trigger large changes in the earth's gravitational field are oceans, polar and glacial ice and atmosphere,» Cox explains.

Many of the projected effects of climate change on the world's oceans are already visible, such as melting polar ice caps and rising sea levels.

Investigators are anxiously seeking the answers to two great unknowns about the changes in polar ice.

But over the past decades, the melt season has grown longer and the average extent of Arctic sea ice has diminished, changing the game for many Arctic marine mammals — namely beluga, narwhal and bowhead whales; ringed, bearded, spotted, ribbon, harp and hooded seals; walruses; and polar bears.

As climate change causes sea ice to shrink, the number of «problem» polar bears appears to be increasing.

The TES will also investigate seasonal changes in the polar ice caps and the distribution of dust and clouds in the atmosphere.

Our study suggests that at medium sea levels, powerful forces, such as the dramatic acceleration of polar ice cap melting, are not necessary to create abrupt climate shifts and temperature changes.»

A short skim through the text below this classic climate change image is often all it takes for glaciologist Twila Moon to find the words that set her teeth on edge: polar ice caps.

With Arctic sea ice melting earlier and earlier, polar bears are being forced to change their diets, scouring dry land for seabird eggs rather than enjoying their typical staple: seals.

Some changes are well - known, such as declines in polar bear populations and stresses to walruses being forced out of their shallow feeding grounds as ice retreats into deeper waters.

ESA's original mission to measure changes in ice sheets and sea ice in Earth's polar regions failed on October 8, 2005, when a software problem caused the commercial launch rocket to fail.

The Antarctic blogs, whether official or personal, raise awareness of climate change issues and communicate directly with the public on current polar projects and life on the ice.

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.

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.

Climate change is pushing temperatures up most rapidly in the polar regions and left the extent of Arctic sea ice at 1.79 million square miles at the end of the summer melt season.

An examination of these changes gave them new insights into how much of the polar ice cap's carbon dioxide freezes out of the atmosphere during winter.

The planet is getting warmer, ocean temperatures are rising, the polar ice caps are melting, and all of the incontrovertible science of climate change is that more extreme - weather events are an inevitable consequence.

It is likely, therefore, that charr were able to detect subtle changes in subsurface light - levels, even during the polar night and under ice.

Polar species, including the polar bear, ice - dependent seals, and emperor penguins are especially vulnerable to the effects of climate change as their unique sea ice habitats shrink due to warming.

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.

«Climate change is accelerating towards the tipping points for polar ice sheets.

The differences are that the UVic model has a smaller forcing from the ice sheets, possibly because of an insufficiently steep lapse rate (5ºC / km instead of a steeper value that would be more typical of dryer polar regions), and also a smaller change from increased dust.

In the long term, changes in sea level were of minor importance to rainfall patterns in north western Sumatra With the end of the last Ice Age came rising temperatures and melting polar ice sheets, which were accompanied by an increase in rainfall around Indonesia and many other regions of the worlIce Age came rising temperatures and melting polar ice sheets, which were accompanied by an increase in rainfall around Indonesia and many other regions of the worlice sheets, which were accompanied by an increase in rainfall around Indonesia and many other regions of the world..

Other recent research has also tied the loss of polar ice to subtle changes in the Earth's rotation, suggesting that these losses can slow the planet's spin, in addition to shifting the location of the pole itself.

And given that much of this is related to the loss of polar ice, a changing climate would appear to be at least partly — although perhaps not wholly — responsible.

Although it was not a true ice age, the term was introduced It is not uncommon to read that ice cores from the polar regions contain records of climatic change from the distant past.

A documentary chronicling a 700 - person trek across the Himalayas to call attention to the plight of the largest store of glaciers outside the polar ice caps, which are threatened by climate change.

The UK Space Agency has provided a grant to support the project, which will look at human behaviour through analysis of the carbon footprint of homes and schools alongside the monitoring of changes in polar ice using Earth Observation data.

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.

Some thoughts are earth - changing, like melting polar ice caps.

Strachan talks to ArtReview about his multi-faceted work exploring climate change, frontier exploration and cultural difference via neon sculpture, cloned polar ice chunks and a Nassau school choir performing an ancient Inuit hunting song.