Sentences with phrase «in polar ice»

Ice is melting in both polar ice caps and mountain glaciers.

The global sea level looks set to rise far higher than forecast because of changes in the polar ice - sheets, a team of researchers has suggested.

By far the best match was to the record of atmospheric carbon dioxide, measured from atmospheric samples and air trapped in polar ice.

CO2 trends for earlier times have been derived from measurements of CO2 in air trapped in bubbles in polar ice and in mountain glaciers.

For the first time scientists have directly observed living bacteria in polar ice and snow — an environment once considered sterile.

By far the best match was to the record of atmospheric carbon dioxide, measured from atmospheric samples and air trapped in polar ice.

Today the small amount of water detected on the planet is locked in the polar ice caps, but recently discovered geological features suggest liquid water once flowed on its surface.

The degree of mixing is disputed for 10Be but there is good evidence that 10Be gets also well mixed and that, e.g., the signal measured in polar ice cores reflects mainly the global average production signal (see, e.g., Muscheler & Heikkilä 2011, and references therein).

But when tree rings, pollen counts in polar ice, and temperature records from multiple places around the world all point in the same direction, we become increasingly confident that global warming is a reality.

And, he adds, with sulfate appearing in both polar ice caps — Arctic and Antarctic — there is «a strong consensus» that this also supports an equatorial source.

That a powerful volcano erupted somewhere in the world, sometime in the Middle Ages, is written in polar ice cores in the form of layers of sulfate deposits and tiny shards of volcanic glass.

IceCube, a giant particle detector buried in the polar ice, captures elusive, high - energy species of neutrinos — fundamental particles that fly straight through almost everything they touch.

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).

Carbonyl sulfide hydrolysis in polar ice cores and the feasibility of recovering a paleoatmospheric history.

Why, it's one of prehistory's monsters, believed extinct for millions of years, and somehow preserved in that polar ice.

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.

More than 20 physico - chemical processes, mostly related to the presence of liquid water, contribute to the alteration of the original chemical composition of the air inclusions in polar ice [3].

Todd, Look up «CO2 diffusion in polar ice: observations from naturally formed CO2 spikes in the Siple Dome (Antarctica) ice core» by Jinho Ahn et al. from the Journal of Glaciology (2008).

Gore presents many other important aspects of climate change, including the threat of abrupt climate change leading to a shut - off of the Gulf Stream current, the increase in damaging insect infestations and tropical diseases, loss of coral reefs, loss of ice in the polar ice cap, and melting of permafrost in the Arctic.

The most valuable for what they tell of the Sun are carbon of atomic weight 14 (14C, or «radiocarbon»), found in tree - rings, and beryllium of weight 10 (10Be) that is naturally sequestered in polar ice deposits.

The 800 - year lag between the beginnings of temperature increase and CO2 rise in the polar ice record is because the initial warming that provoked the end of the ice ages was caused by changes in the Earth's alignment and orbit around the sun; not anthropogenic CO2.

The last time the polar regions were significantly warmer than present for an extended period (about 125,000 years ago with Co2 at 287ppm), reductions in polar ice volume led to 4 to 6 meters of sea level rise.

In the past decade, scientists have documented similar dust peaks in polar ice cores, and in sediments from the Atlantic and Indian oceans, but records from Pacific were contradictory.

(The equilibrium referred to is that of the ocean — it doesn't include very slow changes in polar ice sheets, etc.) Obviously, the upper tail of the estimated distribution for S is important, not just its central value.

97 percent of the water on Earth is salt water, contained in the planet's oceans, seas, and inland salt water bodies, 2 percent of it (fresh water) is locked in the polar ice caps, and the remaining 1 percent is the fresh water we use everyday.

But when Lavigne's team examined shards of volcanic glass from this volcano, they found that they didn't match the chemical composition of the glass found in polar ice cores, whereas the Samalas glass is a much closer match.

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

The variations of solar activity over long time intervals using a solar activity reconstruction based on the cosmogenic radionuclide 10Be measured in polar ice cores are studied.

Dust trapped in polar ice cores shows that ejected material spread around the globe, indicating that the eruption injected substantial material into the stratosphere, where it can strongly affect climate.

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.

However, the researchers suggest, changes ranging from growing levels of carbon dioxide in the atmosphere to infusions of plastics into marine sediments suggest that we've now left the Holocene decisively behind — and that the proof is already being laid down in polar ice cores, deep ocean sediments, and future rocks themselves.

Certain extremophiles (microbes that tolerate harsh conditions) have been found in seawater well above the boiling point, in polar ice, and even deep underground.

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

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

Water seems to exist there only as ice, in the polar ice caps and perhaps under the Martian soil.