Sentences with phrase «of ice accumulation»

The study uses reconstructions of ice accumulation, satellite and aircraft readings of ice thickness, and changes in elevation and ice velocity to determine how fast ice shelves melt and compare the mass lost with the amount released by the calving, or splitting, of icebergs.

For example a large 1987 calving event removed 100 years of ice accumulation from the Ross Ice Shelf in just one day, an amount second only to the loss of the Larsen Ice Shelf.

Back - of - the - envelope calculations show that the latent heat absorbed by melting of ice after surges (e.g., the melting of > 1500 years of ice accumulation during Dansgaard - Oeschger events — which seem to have happened in unison across the northern hemisphere, or the longer > 5ky Bond cycles) can significantly contribute to the global energy balance.

Not exact matches

Heavy snow and mixed precipitation is possible Friday night and Saturday, with accumulations of six to 12 inches, along with ice.

Snow falls lightly at the poles, but as each year's accumulation is compressed into ice, it encases chemical hallmarks of the atmosphere and climate, including traces of major eruptions.

An ice core is a core sample from the accumulation of snow and ice over many years that have recrystallized and have trapped air bubbles from previous time periods.

That doesn't provide a full picture of snow accumulation, since it doesn't take into account the density of the snow layers that pile on the ice.

The antifreeze lowers the freezing point of water and therefore reduces ice accumulation during the flight.

First, the frictional process of sliding: glaciers are rivers of ice that move («slide») ice from centers of accumulation to oceans, a process that affects climate and water levels.

David Ullman, a postdoctoral researcher at Oregon State University and lead author on the study, said there are two mechanisms through which ice sheets diminish — dynamically, from the jettisoning of icebergs at the fringes, or by a negative «surface mass balance,» which compares the amount of snow accumulation relative to melting.

By measuring the thickness of the ice laid down each year, the researchers estimated annual snow accumulation for the past 300 years.

But the large volumes of data on Arctic sea and land ice that IceBridge has collected during its nine years of operations there have also enabled scientific discoveries ranging from the first map showing what parts of the bottom of the massive Greenland Ice Sheet are thawed to improvements in snowfall accumulation models for all of Greenlaice that IceBridge has collected during its nine years of operations there have also enabled scientific discoveries ranging from the first map showing what parts of the bottom of the massive Greenland Ice Sheet are thawed to improvements in snowfall accumulation models for all of GreenlaIce Sheet are thawed to improvements in snowfall accumulation models for all of Greenland.

Vast accumulations of dusty ice appear from the poles to the midlatitudes; in some places the ice has seemingly formed glacierlike tongues more than a half mile wide.

The beginning of the last glacial period was characterized in the Northern hemisphere by significant accumulation of snow at high latitudes and the formation of a huge polar ice sheet.

In Antarctica, we find significant dynamic thinning of fast - flowing ice at rates greater than plausible through interannual accumulation variability for drainage sectors....

Researchers have attributed glacial decline to increasing temperatures, which have reduced the period of glacial accumulation and extended the period of summer ice melting (ablation).

For typical mid-latitude glaciers, winter snow accumulation is on the order of 1 m / year (ice equivalent — or about 3 m of snow).

«If the structure is indeed the result of the 2004 impact, we would expect it to have undergone about 10 years of alteration by processes such as snow accumulation, erosion by the wind, and deformation by the flow of the ice shelf itself.»

The effects on ice sheets due to increasing temperature may accelerate, but as documented by the IPCC the effects are not easily projected accurately and in the case of the Antarctic, may trigger an accumulation of additional ice mass.

The IPCC projects that ice mass loss from melting of the Greenland ice sheet will continue to outpace accumulation of snowfall.

The Greenland, and possibly the Antarctic, ice sheets have been losing mass recently, because losses by ablation including outlet glaciers exceed accumulation of snowfall.

Holocene accumulation and ice flow near the West Antarctic Ice Sheet Divide ice - core site, Journal of Geophysical Research: Earth Surface, 121, p. 1 - ice flow near the West Antarctic Ice Sheet Divide ice - core site, Journal of Geophysical Research: Earth Surface, 121, p. 1 - Ice Sheet Divide ice - core site, Journal of Geophysical Research: Earth Surface, 121, p. 1 - ice - core site, Journal of Geophysical Research: Earth Surface, 121, p. 1 - 18.

Many of the studies which demonstrate the effectiveness of ice baths in reducing inflammation and accumulation of white blood cells (the guys responsible for destroying damaged tissue and creating signals for re-growth) measure this response over a very short time frame - for hours or a couple of days at best.

According to VetStreet.com, if your dog has a thin coat, consider purchasing a sweater or another piece of outerwear to protect his or her torso, as well as small booties that can safeguard your dog's paw pads from frostbite and the accumulation of salt and ice melter.

On the boundary of the Banff and Jasper National Parks is the Columbia Icefield, one of the largest accumulations of ice and snow south of the Arctic Circle, covering an area of nearly 325 square kilometres.

My overall impression of ice, snow, and the results of its accumulation is one of purity and power.

UPDATE 10:15 p.m.: Other measurements show that Greenland is still clearly losing more ice through melting around the edges than it is gaining through the accumulation of snow in the interior.

For typical mid-latitude glaciers, winter snow accumulation is on the order of 1 m / year (ice equivalent — or about 3 m of snow).

But also keep in mind that Lambeck et al (2002) have suggested that loss of permanent ice over the Arctic Sea at the end of the last interglacial allowed for increased accumulation of snow and ice at high latitudes because of the increased amount of moisture available.

The shape of the accumulation graph looks distressingly similar to the shape of Arctic sea ice graphs.

To give another, more specific example, at a typical glacier on Mt. Baker, in Washington State, a summer temperature increase of 1 °C translates to a ~ 150 m increase in the altitude of the equilibrium line (the point where annual ice accumulation = annual loss), and a resulting ~ 2 km retreat of the glacier terminus.

Interesting — I just (last night) emailed [email protected], offering to become involved here, and mentioned the conclusion of the Loutre and Berger paper, that orbital forcing parameters will next be conducive to widespread polar ice accumulation in about 60,000 years.

Because the drains out of the various bathtubs involved in the climate — atmospheric concentrations, the heat balance of the surface and oceans, ice sheet accumulations, and thermal expansion of the oceans — are small and slow, the emissions we generate in the next few decades will lead to changes that, on any time scale we can contemplate, are irreversible.

The paper, combining evidence of driftwood accumulation and beach formation in northern Greenland with evidence of past sea - ice extent in parts of Canada, concludes that Arctic sea ice appears to have retreated far more in some spans since the end of the last ice age than it has in recent years.

Land - based ice in glaciers and ice - sheets will keep contributing to sea level rise as long as melting exceeds snowfall accumulation; stopping the growth of temperature would not stop the net melting.

The margins of all ice sheets (including Greenland) are in retreat, and accumulation is negative over almost the whole of the West Antarctic sheet.

Of course also in ice cores you might then have special problems for the respective years such as particular accumulation or very specific circulation patterns that somehow compensate for the general cooling.

I believe that what the phrase is trying to get at is either the acceleration relative to the pause in the 1950 - 1970 period, or the acceleration in accumulation of noticeable consequences — worldwide glacier melt, sea ice retreat, earlier onset of springtime, (possibly) increasingly intense hurricanes, Larsen - B breakup, melting of Greenland along the margins, etc..

And it means more time must be spent on those ice sheets, both in the melt zones and the places where accumulation of snow still dominates — including Swiss Camp, which I visited on the flanks of the ice sheet in 2004:

Other pages display maps of individual glaciers, with white regions indicating the «accumulation zone,» where snow falls and adds to the mass, and gray stippled areas showing the «ablation zone,» where melting eats away at the ice.

The acceleration increased the mass loss from 5 km3 ice / year in 1996 (12) to 36 km ice / year in 2005 (Table 1), which is 6 % of Greenland's total accumulation.

I am thinking the accumulation and loss of ice in antarctic should go in about 23 year cycles.

It follows that accumulation of ice must result in a fall in sea level, and vice versa.

In outline, the model supposes that the rate of change of ice extent has two terms - accumulation proportional to its length, and loss at the grounding line which is proportional to the cross-section area there, which because a constant width is assumed is proportional to the depth of the ice.

On the other hand, the correlation between accumulated emissions and accumulation of CO2 in the atmosphere is much better: it is a near fit over the last 100 + years (60 years of ice core data, near 50 years of MLO data).

That the ice core CO2 levels are reasonable for CO2 measurements can be seen as different ice cores at very different snow / ice temperatures, inclusions (coastal salts vs. inland salts content), accumulation rates, ice age — gas age differences,... show the same CO2 levels (within 5 ppmv) for overlapping periods of gas age.

Three ice cores with very high accumulation rates (1.5 m ice equivalent / year) for two of them, drilled with three different techniques (wet and dry), without clathrates or cracks in the ice, were compared.

Like a glacier, an ice sheet forms through the accumulation of snowfall, when annual snowfall exceeds annual snowmelt.

GRACE measures changes in the strength of the gravitational force over the surface of the Earth, including changes driven by the accumulation or loss of ice.

As a result, snow accumulation is typically very low near the summit of an ice sheet.