Sentences with phrase «warms the ice above»

«We think the refreezing process uplifts, distorts and warms the ice above, making it softer and easier to flow.»

Not exact matches

But let's not kid ourselves; I'm not above warming one up and putting a big scoop of vanilla ice cream on top for lunch dessert.

Water freezes to ice when it is cooled to below 0 degrees celcius, when ice is warmed to above 0 degress celcius it turns back into water.

These high sea levels, ranging from a few meters to 20 meters above today, imply that the Antarctic Ice Sheet is highly sensitive to climate warming.

«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.»

Instead, based on what he had seen in ice shelves on Earth, he guessed the warm plumes would melt the ice above them, creating pockets of liquid water embedded within the shell.

Blankenship thought the warm ice would melt some of the ice above it as it ascended, leaving pockets of liquid water within the shell.

He proposed that the bottom layers of Europa's ice shell would be slightly warmer than the ice on top, due to heating from both the ocean below and the crushing pressure of the miles - thick ice above.

The dominant signal in the temperature record (the white line in the above figure) is a 100,000 year cycle where long ice ages are broken by short warm periods called interglacials.

Warm Humid Air Penetrates Arctic Cold Dome: 2 of 4 / / Published on Feb 26, 2018 Above the Arctic sea - ice sits a dome of cold, dry, heavy air.

First, most climate simulations, including ours above and those of IPCC [1], do not include slow feedbacks such as reduction of ice sheet size with global warming or release of greenhouse gases from thawing tundra.

Does anyone know how to model the mechanism by which warming from below lubricates the ice and allows it do dislodge a lot faster than warming from above would melt it?

Recent anthropogenic warming has rocketed far above what might be expected from recovering from the Little Ice Age.

As Milankovic warming in the norther hemisphere is carried into the shallow return current, the Antarctic Ice margin retreats; a tipping point is reached where the Drake Passage flow restarts or increases above a threshold.

The bottom line is that uncertainties in the physics of aerosol effects (warming from black carbon, cooling from sulphates and nitrates, indirect effects on clouds, indirect effects on snow and ice albedo) and in the historical distributions, are really large (as acknowledged above).

Warmed foundation ice is not strong enough to support the ice above it.

Warming Island with its high mountain walls invariably rises above the fog to show its rock outline while the connecting ice shelf along the entire oceanic straight is completely buried in fog.

In a more recent paper, our own Stefan Rahmstorf used a simple regression model to suggest that sea level rise (SLR) could reach 0.5 to 1.4 meters above 1990 levels by 2100, but this did not consider individual processes like dynamic ice sheet changes, being only based on how global sea level has been linked to global warming over the past 120 years.

In the short video above, Dr. Alley explains how some patterns in the changes that occur during Earth's ice ages and warm intervals (like the last 11,000 years) prove that greenhouse gases exert a warming effect.

It was said above that the ocean is warming just like the land (& air and ice sheets / glaciers), that the heat in the ocean dwarfs that in the land and air, that the warming is due to the net solar imbalance (solar in, less LW out - no mention of CO2.)

It will be interesting to see whether sea ice above Siberia stays around this summer, even though the temperatures there are now comparatively warm.

As noted above, the recent warming «is seen in the oceans, the atmosphere, in Arctic sea ice retreat, in glacier recession, earlier springs, reduced snow cover etc.» Another «inconvenient truth» for denialists to avoid mentioning or acknowledging while overblowing the UHI issue.

If the statement above were true we'd never experience the Little Ice Age or Medieval Warming, not to mention Younger Dryas.

On the science If people understood what Hansen has been explaining, what the IPCC report says if you read it closely, what climate scientists say off the record, what I try to cull together from the literature, they would understand that we can't go above 450 p.p.m. [parts per million of CO2 in the atmosphere], because that will almost certainly take us across thresholds that shoot to 750 to 1000 p.p.m. — and that is 5 °C + warming, and that is an ice - free planet.

The energy banked in the warm water retards ice growth and also warms the air above.

The ice in the north is an average of 6 to 12 feet thick and is being warmed from beneath as well as above.

It took the admirable Watts Up With That blog, run by the American meteorologist Anthony Watts, to point out that in 1893 the Norwegian explorer Fridtjof Nansen found the Arctic so ice - free that he was able to kayak above 82 degrees north, 100 miles nearer the Pole than our hapless campaigner against «unprecedented global warming».

Snow and ice reflect heat very effectively (which is why patches of snow survive long after temperatures rise above freezing), so if warming leads to less snow, then more heat will be absorbed, which warms the planet further.

We conclude that 2 ◦ C global warming above the preindustrial level, which would spur more ice shelf melt, is highly dangerous.

As there is less and less sea ice to act as a buffer, more energy can go into melting glaciers from below and warming the air above them.

As you can see in the article above, there are theories on why antarctic sea ice has increased that are compatible with a generally warming climate.

It may be worth considering that if climate models are underplaying the actual amount of Arctic sea ice loss, and if Arctic sea ice loss is a positive feedback on global temperature, then, the observed rate of Arctic sea ice loss ought to be applying a warming pressure over and above that from greenhouse gas emissions.

e.g. there is 1) a mild global cooling from the Holocene Climatic Optimum 2) A millenial scale oscillation of ~ 1500 years per Loehle & Singer above (i.e. an approximately linear rise from the Little Ice Age — or better an accelerating natural warming since the LIA) 3) A 50 - 60 year multidecadal oscillation.

Are you saying if the sea ice is an insulator between the water below and the air above, and the water is warmer than the air (warm enough to melt the ice), the melting ice would have a warming influence on the air above, and possibly could be the cause of all the warming of the air?

What is concerning is the possibility that rapid global warming could occur faster than many people believe is possible, if global warming due to atmospheric carbon dioxide causes the Earth's atmosphere to warm enough to release enormous deposits of frozen methane (CH4) that are stored in the permafrost above the Arctic Circle and in frozen methane ice, known as methane hydrate, underneath the floors of the oceans throughout the world (see: How Methane Gas Releases Due To Global Warming Could Cause Human Extinwarming could occur faster than many people believe is possible, if global warming due to atmospheric carbon dioxide causes the Earth's atmosphere to warm enough to release enormous deposits of frozen methane (CH4) that are stored in the permafrost above the Arctic Circle and in frozen methane ice, known as methane hydrate, underneath the floors of the oceans throughout the world (see: How Methane Gas Releases Due To Global Warming Could Cause Human Extinwarming due to atmospheric carbon dioxide causes the Earth's atmosphere to warm enough to release enormous deposits of frozen methane (CH4) that are stored in the permafrost above the Arctic Circle and in frozen methane ice, known as methane hydrate, underneath the floors of the oceans throughout the world (see: How Methane Gas Releases Due To Global Warming Could Cause Human ExtinWarming Could Cause Human Extinction).

Every time the oceans get warm enough to melt polar ice it always snows enough to increase Albedo to prevent additional warming above the upper bound set by this wonderful polar ice cycle that bounds the temperature of earth.

«In light of the above findings, it appears that sea ice cover in the Bohai Sea is not quite as sensitive to CO2 - induced global warming as climate model projections / theory suggest it should be.

The warm year saw the Greenland ice sheet experience above average melting for 90 % of the «melt season», the report says.

Correction to the above: I should have said the ice in the Archipelago blocks cold Arctic sea water from leaving, thereby inhibiting the ingress of warmer southern water.

estimated the annual mean global surface warming threshold for nearly ice - free Arctic conditions in September to be ~ 2 °C above...

«We find that the access of warm water to the glaciers and ice shelves in this region are almost controlled by a depth of about 700 meters [2,300 feet], which is just right above some of the warmest waters in the region,» said Eric Rignot, a professor of Earth system science at UCI and co-author of the new study.

The only way more water can be added is if the glaciers and ice sheets currently perched on land above sea level are warming, melting and pouring into the sea.

For humanity itself, the greatest threat is the likely demise of the West Antarctic ice sheet as it is attacked from below by a warming ocean and above by increased surface melt.

They found that rising air temperatures above the southeastern Weddell Sea will thin the ice there, and warm ocean water will increasingly encroach beneath the Filchner - Ronne Ice Sheice there, and warm ocean water will increasingly encroach beneath the Filchner - Ronne Ice SheIce Shelf.

AGW climate scientists seem to ignore that while the earth's surface may be warming, our atmosphere above 10,000 ft. above MSL is a refrigerator that can take water vapor scavenged from the vast oceans on earth (which are also a formidable heat sink), lift it to cold zones in the atmosphere by convective physical processes, chill it (removing vast amounts of heat from the atmosphere) or freeze it, (removing even more vast amounts of heat from the atmosphere) drop it on land and oceans as rain, sleet or snow, moisturizing and cooling the soil, cooling the oceans and building polar ice caps and even more importantly, increasing the albedo of the earth, with a critical negative feedback determining how much of the sun's energy is reflected back into space, changing the moment of inertia of the earth by removing water mass from equatorial latitudes and transporting this water vapor mass to the poles, reducing the earth's spin axis moment of inertia and speeding up its spin rate, etc..

As with the Arctic, the warming oceans are undercutting sea ice from below, while the warming atmosphere is melting ice from above.

YES — CO2 HAS BEEN ON AN UPWARD CLIMB, to levels above those seen for the last few ice ages (with the proviso that ice cores records have poorer resolution the further back in time one goes; there may have been short - lived CO2 spikes that we can not see); is all of that human - driven, or is there a natural warming trend driving the release of biotic CO2?

Scientists and politicians are keen to hold global warming to 1.5 C above pre-industrial levels because they fear that a world that warms to such a level will experience severe loss of ice, particularly from Greenland's massive shield of glaciers, and that the melting will in turn trigger considerable rises in sea levels.

In summer more sea ice melts, which leads to decreased albedo, a climate feedback that enhances the warming of both the open ocean water and the atmosphere directly above it.

Nelson's Bay Cave, a deep cave somewhat above the high - water line which we explored several days ago, has layers from the last ice age and into our present warm period; their tools included projectile weapons, and, judging from the bones they discarded, they had gotten good at bringing home the bacon and dealing with the ill - tempered Cape buffs, among the most dangerous animals in Africa.