Sentences with phrase «much ice sheets»

A new paper in Nature Climate Change by Bamber and Aspinall attempts to untangle the thorny problem of how quickly and how much the ice sheets of the world will melt.

A pedantic treatment would use a logistics function since we know there is only so much ice sheet mass to be lost.

So how much of the temperature swings are orbitally forced and how much GHG forced and how much ice sheet albedo forced?

Not exact matches

Sometimes I use an ice cream scoop to make the cookies but sometimes I just feel like it's too much work, so I sometimes I make them like a bar cookie in my cookie sheets about 3/4 inch deep and it saves time.

Also, it demands way to much fussiness with the baking stone and ice cubes in a baking sheet at the bottom of the oven!?

Using a mini ice cream scoop or a small spoon, scoop the dough onto the prepared baking sheet (no need to leave much room in between as they do not spread out).

There was too much ice on the ground to drive stakes, so we went with snowbank walls and a sheet of industrial plastic.

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.

For glaciers that extend from low to high elevation, measurements taken at the low end — the glacier's «snout» — may not tell scientists much about how the same ice sheet is behaving higher up the mountain.

Greenland's ice streams drain the ice sheet via meltwater runoff much in the same way that water basins drain rivers, explained Bevis.

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 Ameriice 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 Ameriice 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 Ameriice sheet covered much of Canada and North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Amesheet covered much of Canada and North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Ameriice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Amesheet covered northern Europe and the Patagonian Ice Sheet covered southern South AmeriIce Sheet covered southern South AmeSheet covered southern South America.

The Antarctic ice sheet, the thick layer of ice covering much of the continent, is anchored in place by its floating fringe, shelves of ice that jut out into the surrounding ocean.

Over the current century, the model projects that the average albedo for the entire ice sheet will fall by as much as 8 percent, and by as much 10 percent on the western edge, where the ice is darkest today.

The Arctic took another 3,000 - 4,000 years to warm this much, primarily because of the fact that the Northern Hemisphere had huge ice sheets to buffer warming, and the fact that changes in ocean currents and Earth's orbital configuration accelerated warming in the south.

... It's not so much air temperatures but warmer water underneath that is melting these ice sheets.»

«The fact that a large portion of the western flank of the Greenland ice sheet has become dark means that the melt is up to five times as much as if it was a brilliant snow surface.»

Their results show that East Greenland has been actively scoured by glacial ice for much of the last 7.5 million years — and indicate that the ice sheet on this eastern flank of the island has not completely melted for long, if at all, in the past several million years.

The 30 or so bits of bone, none more than 7 centimeters long, have suffered much since they were entombed: Ice sheets have scoured Ellesmere Island several times in the past few million years, and today's freeze - thaw cycles continue to splinter fossils into ever - smaller fragments, Rybczynski says.

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

Ice - sheet growth, coupled with favorable changes in Earth's orbit, pushed the planet past a climatic tipping point and led to both the rapid buildup of a permanent ice sheet in the Antarctic and much larger changes in global climate, says HrIce - sheet growth, coupled with favorable changes in Earth's orbit, pushed the planet past a climatic tipping point and led to both the rapid buildup of a permanent ice sheet in the Antarctic and much larger changes in global climate, says Hrice sheet in the Antarctic and much larger changes in global climate, says Hren.

The # 3 - million (US$ 4 - million) Black and Bloom project aims to measure how algae are changing how much sunlight Greenland's ice sheet bounces back into space.

Massive ice sheets grew across the Antarctic continent, major animal groups shifted, and ocean temperatures decreased by as much as 5 degrees.

SPEED UP The collapse of West Antarctica's glaciers may be unavoidable, and the ice sheet's demise could raise global sea level by as much as 4 meters, researchers reported.

The drought that is devastating California and much of the West has dried the region so much that 240 gigatons worth of surface and groundwater have been lost, roughly the equivalent to a 3.9 - inch layer of water over the entire West, or the annual loss of mass from the Greenland Ice Sheet, according to the study.

New understanding of how big ice sheets on Greenland and Antarctica might break up has forced the IPCC to almost double its estimates of likely sea level rise by the end of the century — to as much as 1 metre.

Within a few hundred years sea levels in some places had risen by as much as 10 meters — more than if the ice sheet that still covers Greenland were to melt today.

To better understand and anticipate changes in sea level rise, scientists have sought to quantify how much snow falls on the ice sheet in any given year, and where, since snow is the primary source of the ice sheet's mass.

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

In Greenland this doesn't happen much because the water drains away through big channels like the mega-canyon, so melting ice sheets there tend not to drive rapid sea level rises.

The study's results suggest the ice sheet hasn't lost as much reflectivity as previously thought, and that black carbon and dust concentrations haven't increased significantly and are thus not responsible for darkening on the upper ice sheet.

And that if it did, the northern hemisphere would cool so much that that ice sheets would start to grow, creating a catastrophic new ice age.

In fact, learning about the lakes and rivers could shed light (albeit from a very dark place) on weighty matters ranging from ice - sheet stability — how much do the lakes enhance the flow of ice toward the sea?

One such ice core, known as the West Antarctic Ice Sheet Divide (WAIS Divide) core was drilled to a depth of more than two miles (3,405 meters), and much of it was analyzed in the DRI Ultra-Trace Laboratory for more than 30 different elements and chemical speciice core, known as the West Antarctic Ice Sheet Divide (WAIS Divide) core was drilled to a depth of more than two miles (3,405 meters), and much of it was analyzed in the DRI Ultra-Trace Laboratory for more than 30 different elements and chemical speciIce Sheet Divide (WAIS Divide) core was drilled to a depth of more than two miles (3,405 meters), and much of it was analyzed in the DRI Ultra-Trace Laboratory for more than 30 different elements and chemical species.

In the mid-1990s, a lake containing 1,300 cubic miles of water (as much as Lake Michigan) was detected 12,000 feet below the surface of the ice in East Antarctica, beneath where the Russians had spent years drilling into the ice sheet to study its history.

Ullman said the level of CO2 that helped trigger the melting of the Laurentide ice sheet was near the top of pre-industrial measurements — though much less than it is today.

Better estimates of Pliocene sea levels will help geologists know how much of the ice sheets melted during that balmy era, Dowsett says, which may give us a glimpse of our own climate future.

Massive ice sheets cover much of your Arctic world.

Not only is Greenland's melting ice sheet adding huge amounts of water to the oceans, it could also be unleashing 400,000 metric tons of phosphorus every year — as much as the mighty Mississippi River releases into the Gulf of Mexico, according to a new study.

They then used that data to extrapolate how much phosphorus was likely being released from the entire Greenland ice sheet.

«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.»

At the time people were present at Page - Ladson, ice sheets still covered much of North America, so the only way that people could have come to the Americas would have been by boat, hopping down the Pacific coast and then presumably using rivers to move inland.

It is not clear yet how much of the phosphorus being released from the ice sheet is reaching the open ocean, but if a large amount of phosphorus coming off the glacier makes it to the sea, the nutrient could rev up biological activity of Arctic waters, according to the study's authors.

In the San Francisco Bay area, sea level rise alone could inundate an area of between 50 and 410 square kilometres by 2100, depending both on how much action is taken to limit further global warming and how fast the polar ice sheets melt.

«It doesn't change our estimates of the total mass loss all over Greenland by that much, but it brings a more significant change to our understanding of where within the ice sheet that loss has happened, and where it is happening now.»

Hawkings and his collaborators spent three months in 2012 and 2013 gathering water samples and measuring the flow of water from the 600 - square - kilometer (230 - square - mile) Leverett Glacier and the smaller, 36 - square - kilometer (14 - square - mile) Kiattuut Sermiat Glacier in Greenland as part of a Natural Environment Research Council - funded project to understand how much phosphorus, in various forms, was escaping from the ice sheet over time and draining into the sea.

What's left to figure out is whether this is happening with other subglacial lakes around the Greenland ice sheet, as well as whether and how to incorporate the findings into models that are aimed at gauging how much Greenland might change with the warming climate and how much water it could add to the rising seas.

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 West Antarctic ice sheet is a marine - based ice sheet that is mostly grounded below sea level, which makes it much more susceptible to changes in sea level and variations in ocean temperature.

Fortunately, the ice sheet over Greenland is much smaller than the ice sheet during the Ice Age and thus with less potential to seriously disturb the systice sheet over Greenland is much smaller than the ice sheet during the Ice Age and thus with less potential to seriously disturb the systice sheet during the Ice Age and thus with less potential to seriously disturb the systIce Age and thus with less potential to seriously disturb the system.