Sentences with phrase «polar ice caps»

The report depicts a planet already adjusting to increasingly apparent manifestations of climate change, from melting polar ice caps and rising seas to more severe and frequent heat waves.

The average thickness of the sea ice over the entire north polar ice cap is only a few meters!

We're all going to be in serious trouble with polar ice caps melting, rising sea levels and increased hurricane activity, most probably caused by shifting ocean temperatures.

Warm air and surface water are melting the summer polar ice cap.

They are able to use satellites to monitor things like the size of polar ice caps over time.

That include melting of polar ice caps, economic consequences, warmer waters and more hurricanes or disasters, the spread of diseases and earthquakes.

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.

... Many scientists predict — shockingly — that the entire north polar ice cap may be completely gone during summer months during the first term of the next president.

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.

There were extensive polar ice caps at intervals from 350 to 260 million years ago, during the Carboniferous and early Permian Periods, associated with the Karoo Ice Age.

Mr. Legates critiques the Arctic Climate Impact Assessment that proclaimed Arctic air temperature trends strongly indicate global warming, causing polar ice caps and glaciers to melt.

Now, I'm not sure what the Times» shift in thinking is with the article — and after more than a decade of consistent gloom - and - doom reporting and editorializing on global warming, I would imagine that the Green - leaning newspaper does not intend to rethink its position on the scare — but it's going to take more than the mere economic exploitation of a shrinking polar ice cap to establish human activity as the cause of the melting.

Back in 2009, Al Gore boldly declared that «the entire north polar ice cap during some of the summer months could be completely ice - free within the next five to seven years.»

Both types of oak spread first to California as polar ice caps expanded, and some of both kinds wound up east of the Rockies and headed to the East Coast and eventually to Mexico.

Respiration by bacteria may have slightly increased levels of CO2 in pockets of air trapped within polar ice caps meaning that before human activity CO2 levels may have been even lower than previously thought.»

Resource - strapped nations are in the midst of an «Arctic scramble» to seize and exploit previously untouched pockets of fish and oil resources made accessible by a receding polar ice cap.

Dec 10, 2007 — Scientists from Columbia University's Lamont - Doherty Earth Observatory will report this week on vital topics including new evidence of the effects of climate change; technologies to confront it; studies of eastern U.S. earthquake risk; and previously unseen inner workings of the deep polar ice caps.

The amount of ice locked in Mars» southern polar ice cap contains enough water to cover the entire planet in an ocean 36 feet deep.

3) similar to the oceans and clouds, the white polar ice caps (frozen water) not only reflect light back into space but due to their positions on the globe also «refract» a large portion harmlessly off the other side of the atmosphere in the same fashion.

Sightings of shifting sand dunes, rolling boulders, and a dwindling polar ice cap in the past year demonstrate that the Red Planet is a far more dynamic world than scientists suspected.

A series of robotic missions, from Viking in the 1970s to the Spirit rover still roaming Mars today, have observed ancient riverbeds and polar ice caps storing enough water to submerge the entire planet in an ocean 40 feet deep.

The Martian polar ice caps also contain water, but it is frozen and therefore would be less useful to living organisms.

Also, polar ice caps come and go with Mars's seasons.

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The south polar ice cap may also be badly affected — the West Antarctic ice sheet could lift loose from its bedrock and collapse as warming ocean waters nibble away at its base, much of which is anchored below current sea levels.

When asked about the thickness of the north polar ice cap many people say things such as «hundreds of feet» and «thousands of feet» and «very thick like the South Pole.»

The source document, the Intergovernmental Panel on Climate Change (IPCC) 2007 Fourth Assessment Report (AR4), has been under harsh scrutiny over the past weeks for a number of blunders, including the Climategate scandal, bogus claims about Himalayan glacier melt, false assertions The Netherlands are drowning, deceptive hysteria over conditions in the Amazon, exaggerations of vanishing polar ice caps, and fraudulent cover - up of Chinese temperature data.

Serreze says if these warmer - than - average conditions persist, the Arctic polar ice cap could disappear in late summer within a couple of decades.

And Katrina and the waning polar ice caps remind us how important this is.

In fact, Barrasso is arguing that the agencies charged with «sitting in a dark room watching polar ice caps» should just keep doing that and let them provide information to the CIA.

It's two artists» rendering of what San Francisco will look like after 200 feet of sea level rise, after the massive polar ice caps melt and accelerated warming expands the acidifying oceans.

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).

«At medium sea levels, powerful forces − such as the dramatic acceleration of polar ice cap melting − are not necessary to result in abrupt climate shifts and associated drastic temperature changes.»

They hoisted a papier - mache representation of Mother Earth and a giant parachute emblazoned with monarch butterflies, and carried signs reading «Melt chocolate, not polar ice caps» and «May the forest be with you».

And Stroeve says reporting on the shrinking polar ice cap is a good way to help people understand what's happening.

The rhetoric and predictions of global warming acolytes have been every bit as confusing in the United States, with former vice president and carbon - credit entrepreneur Al Gore telling an audience in a 2009 speech that «the entire north polar ice cap during some of the summer months could be completely ice - free within the next five to seven years.»

* The late - summer polar ice cap, already at historic lows today, would shrink only another quarter and hold steady by century's end, instead of melting by more than three - quarters with no let - up in sight.

According to Green and his colleagues, these would include an average increase of about 4 °C (~ 7 °F), which would be enough to melt the carbon dioxide ice in the northern polar ice cap.