Sentences with phrase «within polar ice»

The statistical manipulation of raw measurement data of CO2 concentration in air from both within polar ice and atop a volcano in the middle of the pacific requires no less scrutiny by independent expert statisticians than the temperature analyses warranted.

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.»

If it happened in the last 100,000 years, it might be possible someday to extract traces of its effects from deep within the polar ice caps.

Not exact matches

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.

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.

When the liquid silk «thread» passes through the ring, ice crystals grow within the thread in layers, similar to the layers of pores in polar bear fur.

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).

Geologic shoreline evidence has been interpreted as indicating a rapid sea level rise of a few meters late in the Eemian to a peak about 9 meters above present, suggesting the possibility that a critical stability threshold was crossed that caused polar ice sheet collapse [84]--[85], although there remains debate within the research community about this specific history and interpretation.

• The polar ice cap will completely disappear within 100 years.

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.

If you ever see a good time series animation of SSTs, you will know that there is significant movement of water and temperatures within the world's oceans (like there is with polar ice extents.)

Their latest modelling studies indicate northern polar waters could be ice - free in summers within just 5 - 6 years.

But in polar regions [within arctic circle] one is still going to have 6 months per year of darkness and therefore will still have freezing weather, though polar ice may not form during the winter.

If both Greenland and West Antarctica shed the entirety of their ice burden, global sea levels would rise by 12 to 14 m. Although these icecaps would not disintegrate within a century, the loss of even a third of their mass — quite plausible if the rate of polar ice loss continues to double each decade — would force up the oceans by at least 4 m, with disastrous socioeconomic and environmental consequences.

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.»

Sea - ice biome - The biome formed by all marine organisms living within or on the floating sea ice (frozen sea water) of the polar oceans.

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

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.»

Al Gore, unfazed by his climate conviction, went on to claim «the entire north polar ice cap during some of the summer months will be completely ice - free within the next five to seven years,»

In climate science, a hypothesis has been advanced that says a rise in human CO2 emissions will cause polar ice sheets to dramatically recede and contribute meters to sea level rise within a span of decades.

Vagile (see Glossary) animals such as polar bears (sea - ice biome, tundra; Box 4.3) and in particular migratory animals (tundra, wetlands, lakes, tropical forests, savannas, etc.; Box 4.5) respond to impacts both within and across biomes.

While this amount of sea - level rise will not happen overnight, it is sobering to realize how sensitive the polar ice sheets are to temperatures that we are on path to reach within decades,» Andrea Dutton, a geochemist with the University of Florida, said.

We are of course still in an ice age, as there are polar ice caps, but often people use the term to describe a period of more extensive glaciation, properly called a glacial period in the glacial / inter-glacial cycles within the current millions of years - old ice age.