Sentences with phrase «ice sheet cover»

Additional positive feedbacks which play an important role in this process include other greenhouse gases, and changes in ice sheet cover and vegetation patterns.

Thus, in the former domain one can find less ice sheet cover than in last year, but the latter is fully covered with ice.

The only current ice sheets are Antarctic and Greenland; during the last ice age at Last Glacial Maximum (LGM) the Laurentide ice sheet covered much of Canada and North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South America.

Scientists have suggested that ice sheets covering the ocean, or a hydrogen - sulfide haze, might have protected nascent life, but attempts to model these conditions have given ambiguous results.

Capt. Roald Amundsen, the discoverer of the Northwest Passage, left Norway in June, 1910, in the «Fram,» seemingly with the intention of sailing around Cape Horn, however, he sailed to the westward across the South Pacific, and made a landing at whale Bay on the ice sheet covering Ross Sea.

And they have already applied the new isotope technique far beyond Greenland — particularly in exploring the much larger, more mysterious ice sheets covering Antarctica.

Melting can be rapid: as the last ice age ended, the disappearance of the ice sheet covering North America increased sea level by more than a metre per century at times.

The study covers a period that begins at the end of the Ice Age and when there still was an ice sheet covering Canada, Shuman says.

Massive ice sheets cover much of your Arctic world.

We would think that if an ice sheet covered the oceans it would have had an impact on marine production or photosynthesis and we find no carbon isotopic evidence for this.

The sediment cores used in this study cover a period when the planet went through many climate cycles driven by variations in Earth's orbit, from extreme glacial periods such as the Last Glacial Maximum about 20,000 years ago, when massive ice sheets covered the northern parts of Europe and North America, to relatively warm interglacial periods with climates more like today's.

The research team found the evidence confirming the stability of the East Antarctic ice sheet at an altitude of 6,200 feet, about 400 miles from the South Pole at the edge of what's called the polar plateau, a flat, high surface of the ice sheet covering much of East Antarctica.

The Greenland Ice Sheet covers an area roughly the size of Mexico and measures up to 3 km thick in some places.

In the last year, a slew of papers has highlighted the vulnerability of the ice sheet covering the western half of the continent, suggesting that its downfall is inevitable — and probably already underway.

One of the last major unexplored geological features on Earth, the ridge has slowly lost the ice sheet covering it thanks to global warming, opening the sea to exploration — and offshore mining and drilling.

Ice loss from the massive ice sheets covering Greenland and Antarctica is accelerating, according to a new study.

The Cordilleran Ice Sheet covered large parts of North America during the Pleistocene - or last ice age - and was similar in mass to the Greenland Ice Sheet.

Matthias Kuhle's geological theory of Ice Age development was suggested by the possible existence of an ice sheet covering the Tibetan plateau during the Ice Ages.

[2] The only current ice sheets are in Antarctica and Greenland; during the last glacial period at Last Glacial Maximum (LGM) the Laurentide ice sheet covered much of North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South America.

The rates of rapid rise Jim Hansen talks about occurred when large ice sheets covered Canada and the Antarctic ice sheet extended to the edge of the continental shelf.

They are periods during the Pleistocene ice age when large ice sheets covered North America and Western Europe.

(We are still in the Pleistocene ice age with ice sheets covering Antarctica and Greenland.

As I understand it, the sea level record indicates that the melting of the great ice sheets covering parts of the NH began some 16k years ago.

[1] The ice sheet covers 1.71 million km ², or roughly 80 % of the surface of Greenland.

The Antarctic Ice Sheet covers nearly 14 million square kilometers (5.4 million square miles), and is divided into three sections: the East Antarctic Ice Sheet, the West Antarctic Ice Sheet, and the Antarctic Peninsula.

Although ice sheets covered much of the Northern Hemisphere during a series of Pleistocene Ice Ages, the Earth now has just two major ice sheets, one on Greenland and one on Antarctica.

The Antarctic Ice Sheet covers an area larger than the U.S. and Mexico combined.

The Greenland Ice Sheet covers roughly 1.7 million square kilometers (650,000 square miles).

However, the last time the earth's average temperature was 5k lower than to - day mile - high ice sheets covered much of northern Europe and America.

Massive ice sheets covered parts of North America, northern Europe, and several other regions during the last ice age.

One equal in area to the current Antarctic ice sheet covered over half of North America.

Earth's climate has varied widely over its history, from ice ages characterised by large ice sheets covering many land areas, to warm periods with no ice at the poles.

The data used in the study included more than 455,000 independent estimates of changes in the land elevation of the vast ice sheets covering Antarctica, both in the western part of the continent, where ice is melting more rapidly, and in the east, where the ice is considered to be more stable, for the time being at least.

Last glacial maximum was the period in the history of the planet when ice sheets covered significant part of the Northern hemisphere.

The planet's glaciers and ice sheets cover about 11 % of the planet's surface and hold about 70 % of the world's fresh water.

Daniel Cressey; cross-posted from The Great Beyond The ice sheet covering east Antarctica may have been melting since 2006, according to new research, contradicting previous suggestions that it has remained stable or even grown in mass.

- your point, referring as it does to Greenland and Antarctic ice sheets is that those ice sheets cover the entire world (like solar).

And that's important when it comes to the vast ice sheet covering Greenland.

«The Greenland and Antarctic ice sheets cover around 10 % of the global land surface,» said Jon Hawkings, of the University of Bristol, UK.

But the researchers delivered an alarming message to the UN Secretary - General about a potential environmental catastrophe that could raise sea levels by six metres if an ice sheet covering a fifth of the continent crumbles.

You'd hardly notice that change in an afternoon, but in terms of global mean temperature it's the difference between what we have now and mile - high ice sheets covering large portions of the northern hemisphere.

Rather, in addition to massive ice sheets covering the continents, parts of the planet (especially ocean areas near the Equator) could have been draped only by a thin, watery layer of ice amid areas of open sea.

Not exact matches

It's estimated that roughly 99 percent of Earth's land ice is stored in the ice sheets that cover Antarctica and Greenland, so their health is something scientists — and the world — can no longer ignore.

Once you've churned your ice cream, scoop small, uniform scoops onto a frozen baking sheet covered in parchment paper or a silicone sheet.

Inteplast's foodservice products include items such as can liners, T - Shirt bags, gloves, bread and bakery bags, foodservice wrap, reclosable freezer and food storage bags, poly aprons, deli and sandwich bags, bun rack and pan covers, and silverware bags; as well as food and utility bags, ice bags, ice bucket liners, pop - up deli sheets, wave - top bags for carryout, flat - bottom catering bags, and more.

Layers of rich peanut butter ice cream with chocolate - covered peanuts are sandwiched between velvety chocolate ice cream and sheets of crackly dark chocolate.

Soak the gelatin sheets in a bowl with enough ice - cold water to cover, and let stand for at least 5 minutes.

Tightly cover the scooped ice cream in a single layer on a rimmed baking sheet in the freezer.

While most duck shooters snuggle deeper under the blankets, the Maine seabirder gets up at 4 a.m., drives his boat through swells that wash over the decks and turn them into sheets of ice, sets his trawl line of decoys, anchors in the lee of a ledge and covers his boat with rockweed.

A glacier is made up of thousands of tons of ice which is layered in sheets and covers miles and miles.