Sentences with phrase «great sheets of ice»

The great sheets of ice that reflected away sunlight could persist only if they rested on land, not ocean.

Not exact matches

Using a cookie dough scoop or an ice cream scoop of medium size, scoop the cookies onto the prepared tray, 6 per sheet (I baked a greater number per sheet for the party because I was trying to bake such a large number).

They popped right out of the pan, which was great because I used it for an ice cream cake (one sheet pan was perfect for three layers of cake and two layers of ice cream).

But, rapid change in the behavior of parts of the Antarctic ice sheet might cause much greater rise than is often included in coastal planning.

Much of the world's water is stored in glaciers and the great polar ice sheets.

The properties of the climate system include not just familiar concepts of averages of temperature, precipitation, and so on but also the state of the ocean and the cryosphere (sea ice, the great ice sheets in Greenland and Antarctica, glaciers, snow, frozen ground, and ice on lakes and rivers).

If the great ice sheets of Greenland and Antarctica lose enough ice to raise sea level a metre or more, though, it would take thousands of years for snowfall to build up the ice sheets again.

In August 2015, University of Delaware oceanographer Andreas Muenchow and colleagues deployed the first UD ocean sensors underneath Petermann Glacier in North Greenland, which connects the great Greenland ice sheet directly with the ocean.

Abundant liquid water newly discovered underneath the world's great ice sheets could intensify the destabilizing effects of global warming on the sheets.

«That may not sound like a lot, but consider the volume of ice now locked up in the planet's three greatest ice sheets,» she writes in a recent issue of Scientific American.

Should Antarctica's ice sheets dissolve, sea levels would rise dramatically — enough to flood the world's great coastal megalopolises from New York to Shanghai and push millions of people inland.

the south - bound expedition had cleared that vast plain of floating ice which flows down from the great mountains of the interior and covers the southern part of Ross Sea throughout an area above 20,000 square miles with an ice sheet approximately 800 feet in thickness, and had begun to climb the heights which form the mountainous embayment at the head of Ross Sea.

The study fuels a growing concern among scientists about the factors affecting the Antarctic ice sheet — namely, that warm ocean waters are helping to melt glaciers and drive greater levels of ice loss, particularly in West Antarctica.

Roughly 20,000 years ago the great ice sheets that buried much of Asia, Europe and North America stopped their creeping advance.

Sunlight tends to bounce off the white, reflective surfaces of glaciers and ice sheets, but the darker surfaces of dirty ground ice can absorb greater amounts of solar radiation.

Another thing that ice core showed, as others have before, is that the great swing in temperature between glacial and interglacial periods was invariably accompanied by great swings in the amount of greenhouse gases in the atmosphere: When the greenhouse goes up, the ice sheets go down.

Twelve thousand years ago, the great ice sheets retreated at the beginning of the latest interglacial — the Flandrian — allowing humans to return to northern latitudes.

«Warming greater than 2 degrees Celsius above 19th - century levels is projected to be disruptive, reducing global agricultural productivity, causing widespread loss of biodiversity and — if sustained over centuries — melting much of the Greenland ice sheet with ensuing rise in sea levels of several meters,» the AGU declares in its first statement in four years on «Human Impacts on Climate.»

Were the ice present in the form of a solid sheet or chunks, the dips in the numbers of epithermal neutrons would be much greater.

The great ice sheets of Greenland and Antarctica, which rise to over 13,000 feet above sea level, accumulate ice over most of their surfaces and melt only at their lower elevations near the edges.

«The influence of rising oceans is even greater than the overall amount of sea level rise because of storm surge, erosion and inundation,» said Carlson, who studies the interaction of ice sheets, oceans and the climate system on centennial time scales.

From 2001 to 2010, the amount of water added to the ice sheet each year was 15 centimeters (6 inches) greater than it was before 1900, according to the study's authors.

The IPCC also predicts greater sea - level rise than it did in 2007, as it now includes models of ice - sheet movements.

The Bell et al paper in Science Express this week (final version in Science) reporting on the surprising results from airborne ground - penetrating radar studies of the Antarctic Ice Sheet is a great example.

The IPCC is predicting greater sea level rise than it did in 2007, as it now includes models of ice sheet movements.

If their conclusions are right, then the greatest ice sheets of the past were remarkably vulnerable, melting away when there was just a glimmer of extra sunlight.

What is alarming is that the volume of water and the extent and rapidity of its movement is suprisingly much greater than previously believed, and that a possible, perhaps likely, effect of this on ice sheet dynamics is to make the ice sheets less stable and more likely to respond more quickly to global warming than previously expected.

Again, Monckton must surely know full well that for the last 25 - 30 years satellite temperature measurement of sea and land surface have replaced terrestrial temperature station measurements in many cases since these give a much greater coverage (70 % of the surface of the Earth is water... it's difficult to put weather stations on top of ice sheets etc.!)

For example, there appears to be a greater rate of ice sheet thinning in parts of West Antarctica and Greenland than was known about in 2001.

In a study out of the University of Arizona, researchers found that melting ice sheets had a greater impact on sea level rise than the thermal expansion of the oceans during the previous interglacial period 125,000 years ago.

Wind fields are capable of great volatility and very rapid global - scale teleconnections, and they are efficient generators of oceanic circulation changes and (more speculatively) of multiple states relative to great ice sheets.

[SLIDE 17] And so not surprisingly sea level is rising as a result not only of the loss of mountain glaciers and the great land ice sheets — losses from the great land ice sheets; but also thermal expansion of sea water because the ocean is getting warmer.

The base of the ice sheet is buried beneath kilometres of ice, so measuring it in great detail is almost impossible.

The weight of the ice sheets was so great that they deformed the earth's crust and mantle.

Unlike the great ice sheet of Antarctica, the Greenland ice sheet is melting both on its surface and also at outlet glaciers that drain the ice sheet's mass through deep fjords, where these glaciers extend out into the ocean and often terminate in dynamic calving fronts, giving up gigaton - sized icebergs at times.

Here's a great trick — use an ice cream scoop to scoop your dough onto the baking sheet, then gently flatten the top of each biscuit.

Groove marks scoured in bedrock by this ice sheet now hold one fifth of the entire planets fresh lake water in the Great Lakes of the northeastern United States.

... Polar amplification explains in part why Greenland Ice Sheet and the West Antarctic Ice Sheet appear to be highly sensitive to relatively small increases in CO2 concentration and global mean temperature... Polar amplification occurs if the magnitude of zonally averaged surface temperature change at high latitudes exceeds the globally averaged temperature change, in response to climate forcings and on time scales greater than the annual cycle.

- The melting days anomaly is greater on the West of the Ice Sheet.

He gained widest fame for his warning, derived from studies of past climate fluctuations, that great flows of fresh water from melting ice sheets could disrupt Atlantic Ocean currents and cause regional cooling (such an idea was caricatured in the Hollywood disaster film «The Day After Tomorrow «-RRB-.

Also mentioned in the NASA release is the work of Kaitlin Keegan, a doctoral student at Dartmouth College whose focus is «firn,» the newly deposited layers of snow cloaking the two - mile - thick ice sheet that will, over time, become the next dense layers in the great frozen mass.

What a great overview of the ice sheet grounding science, I am not sure I understand some basics, I hope you will permit a few questions from a non-scientist:

There are continuing major questions about the future of the great ice sheets of Greenland and West Antarctica; the thawing of vast deposits of frozen methane; changes in the circulation patterns of the North Atlantic; the potential for runaway warming; and the impacts of ocean carbonization and acidification.

We might have a saviour in the form of the growing antarctic ice sheets in the southern winter as this causes much more planckton to form on the undersurface of the forming ice sheet driving super saturated salty waters deep into the circum polar antarctic bottom waters which is the main driver of the Great Oceanic Conveyor and later on it's travels the AMOC.

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.

I do think it has been clear for a while that interactions with the ocean provide the greatest potential for surprises and rapid changes, and that Greenland's ice sheet would mostly pull out of the ocean before it lost most of its mass.

Also, the stability of the ice shelves is doubtful and without them the ice sheet would probably flow much more rapidly into the sea, finding a new equilibrium after losing a great deal of mass.

The ice sheet is almost 2,400 kilometres long in a north - south direction, and its greatest width is 1,100 kilometres at a latitude of 77 ° N, near its northern margin.

The great unknown, which the recent Hansen paper suggests at several metres, is the 21st century eustatic rise, due primarily to ice sheet melting (also melting of polar and mountain glaciers, and of ice shelves).

Ice shelf - A floating slab of ice of considerable thickness extending from the coast (usually of great horizontal extent with a level or gently sloping surface), often filling embayments in the coastline of the ice sheeIce shelf - A floating slab of ice of considerable thickness extending from the coast (usually of great horizontal extent with a level or gently sloping surface), often filling embayments in the coastline of the ice sheeice of considerable thickness extending from the coast (usually of great horizontal extent with a level or gently sloping surface), often filling embayments in the coastline of the ice sheeice sheets.