Since
current ice melt data could indicate variable climate trends and aren't necessarily part of an accelerating trend, the study warned that predictions of future sea - level rise should not be based on measurements of glacial loss» Daily Mail.
This does not mean that
the current ice melt pattern is an example of anything less then excessive heat content in the region.
Not exact matches
Greenland's coastal glaciers and
ice caps have passed a pivotal tipping point — a new study concludes that they've
melted so much that they're now past the point of no return, and it's unlikely in
current conditions that they'll be able to regrow the
ice they've lost.
One of the sections of the book mentioned that at the
current rate of climate change and human stupidity, the Himilayan
ice cap will have completely
melted within a century.
The causes of the warming remain debated, but Liu and his team homed in on the
melting glacial water that poured into oceans as the
ice receded, paradoxically slowing the ocean
current in the North Atlantic that keeps Europe from freezing over.
Some glaciers on the perimeter of West Antarctica are receiving increased heat from deep, warm ocean
currents, which
melt ice from the grounding line, releasing the brake and causing the glaciers to flow and shed icebergs into the ocean more quickly.
In a new paper, Hansen and colleagues warn that the
current international plan to limit global warming isn't going to be nearly enough to avert disasters like runaway
ice - sheet
melting and consequent sea - level rise.
He warned on Tuesday that warming ocean
currents east of Greenland were
melting ice in the seabed.
Velicogna and her colleagues also measured a dramatic loss of Greenland
ice, as much as 38 cubic miles per year between 2002 and 2005 — even more troubling, given that an influx of fresh
melt water into the salty North Atlantic could in theory shut off the system of ocean
currents that keep Europe relatively warm.
This simulation shows how heat
currents (red) would churn inside a mud ball 200 kilometers wide, 2.4 million years after its
ice melted.
If the
melting of the polar
ice caps injects great amounts of freshwater into the world's oceans, climate scientists fear that the influx could affect
currents enough to drastically change the weather on land
«It will help us to find clearer answers as to whether the Arctic sea
ice melts primarily due to higher temperatures or whether the sea
ice is shrinking due to changes in wind and ocean
currents.»
That CO2 then warmed the globe,
melting back the continental
ice sheets and ushering in the
current climate that enabled humanity to thrive.
The immediate disasters of The Day After Tomorrow remains wild exaggeration, but
melting ice could yet cause dramatic climate changes by altering ocean
currents
Schimdt has found evidence that warm ocean
currents and convective forces beneath Europa's frozen shell can cause large blocks of
ice to overturn and
melt, bringing vast pockets of water, sometimes holding as much liquid as all of the Great Lakes combined, to within several kilometers of the moon's icy surface.
Of course, freeing electrons in a copper - oxide insulator to get superconducting
current flowing for useful applications won't be quite as easy as
melting ice to get liquid water or removing pieces from a chessboard.
Based on what we know, we can expect the rapid
ice loss to continue for a long time yet, especially if ocean - driven
melting of the
ice shelf in front of Pine Island Glacier continues at
current rates,»
Warm
currents can
melt the floating
ice shelves that hold back
ice on land.
Part of the fresh water likely originates from
melting of the Greenland
Ice Sheet north of the Young Sound and is transported with the East Greenland ocean
current along the eastern coast of Greenland.
Greenland's
ice sheet
melts and sends large amounts of fresh water into the coastal waters, where it is of major importance for local production but potentially also for global ocean
currents.
Unexpectedly, this more detailed approach suggests changes in Antarctic coastal winds due to climate change and their impact on coastal
currents could be even more important on
melting of the
ice shelves than the broader warming of the ocean.
The
melting and retreating of Arctic sea
ice in the summer months also has allowed PWW to move further north than in the past when
currents pushed it westward toward the Canadian archipelago.
Because ocean
currents play a major role in transporting the planet's heat and carbon, the ECCO simulations are being used to understand the ocean's influence on global climate and the
melting of
ice in polar regions.
The shelves slow and stabilize the glaciers behind them, but they are succumbing to a hidden force: Deep, warming ocean
currents are
melting the
ice from beneath.
While the glaciers in this region seemed stable, it turns out warming ocean
currents have been
melting the underside of the
ice.
The basal
melting due to subsurface warming represents an important component of the
current ice mass loss,» Ezat points out.
Sea
ice and icebergs also
melt as ocean
currents carry them to warmer places farther from the poles.
The model simulates
melting at the base of the Amundsen Sea
ice shelves at
current rates over several decades.
To
melt only the
ice layer immediately in contact with the surface, he has developed a way of pulsing electric
current into the heater in 1 - millisecond bursts.
Current estimates of sea - level rise by the Intergovernmental Panel on Climate Change consider only the effect of
melting ice sheets, thermal expansion and anthropogenic intervention in water storage on land.
Current climate models do not take into account glacial flow and therefore underestimate the impact of glacial
melt and the calving of
ice flows, the researchers argue in a paper detailing the findings in today's Science.
She found the
melting ice could create up to 17,000 km2 of new
ice - free area across Antarctica — a 25 per cent increase on
current levels.
This shift strengthens the ocean
currents that bring warm, salty water to the surface, where it accelerates the
melting of Antarctic
ice.
The wind changes were found to be heaving warm
currents from deeper waters up into a zone where the Antarctic
ice sheet is vulnerable to
melt and crumble from beneath — the area where towers of
ice sit atop submerged ground.
Even if you ignore all the temperature meauserments which you seem to vehimently deny there is still many other sources of evidence associated with this increase such as —
ice melt / extreme weather events / sea
current changes / habitat changes / CO2 /
ice cores / sediment cores.
Current changes in the ocean around Antarctica are disturbingly close to conditions 14,000 years ago that new research shows may have led to the rapid
melting of Antarctic
ice and an abrupt 3 - 4 metre rise in global sea level.
That's why scientists at Texas» Rice University have developed a new graphene - based coating that continuously
melts ice by conducting an electrical
current.
Either the glaciers would have to flow into the ocean at unrealistic rates, or rapid
melting would have to be triggered over a much larger area of the
ice sheet than
current evidence suggests.
By Kenneth Richard Geophysicist and tectonics expert Dr. Aftab Khan has unearthed a massive fault in the
current understanding of (1) rapid sea level rise and its fundamental relation to (2) global - scale warming / polar
ice melt.
So it currently includes a [positive] contribution from the
ice - albedo feedback, because our
current climate possesses sea -
ice that will be
melted by a modest increase in temperatures.
Melting sea
ice will mean ocean
currents can carry warmer water and nutrients into Arctic water, taking fish further north and potentially allowing them to mix between oceans.
The thickness of the remaining, multi-year
ice, along with its geographic location, will make it more difficult to
melt than the
ice that was spread across the Arctic, and exposed to Pacific and Atlantic ocean
currents, along with runoff from fresh water rivers.
Around the Antarctic Peninsula, changes in ocean
currents, and in particular, changes in circumpolar deep water flowing onto the continental shelf, is
melting ice shelves from below.
This could be do to changes in ocean circulation, and warming waters reaching the grounding lines for
ice shelves in Arctic and Antarctica, leading to non-linear increase in
melting and sea level rise, impossible to avoid on our
current path.
Warming air temperatures,
melting ice, and shifting
currents are totally altering the ocean ecosystem, affecting the people, plants, and animals that call it home.
We're told that
ice is
melting rapidly and at the
current rate the Arctic Ocean could be
ice - free by 2050 (a sobering thought).
Today, if just the
current Ross
Ice Shelf of Antarctica melted, it is estimated that sea level would rise 20 to 251 If we melted all of the ice on Greenland, the North polar areas and the Antarctic in addition, sea level could rise 300» or
Ice Shelf of Antarctica
melted, it is estimated that sea level would rise 20 to 251 If we
melted all of the
ice on Greenland, the North polar areas and the Antarctic in addition, sea level could rise 300» or
ice on Greenland, the North polar areas and the Antarctic in addition, sea level could rise 300» or so.
Seems this might hold for larger scale events, such as the arctic
ice melting (i.e., there would be more warming in the arctic ocean in our
current times, except some of the «warming» energy is going into the
melting process rather than warming).
Let me refer you to William M. Connelly's blogpost of Nov 27, 2008 in which he stated: «And it is not true that The trajectory of
current melting plummets through the graphs like a meteorite falling to earth — as we all know, there was marginally more
ice this year than last — and if Monbiot, PIRC, or anyone from the Naval Postgraduate School in Monterey, California, or indeed anyone else is stupid enough to believe that all the late - summer
ice will be gone by 2013 (or within «within three to seven years»), I've got money that says otherwise: wan na bet?»
Other factors would include: — albedo shifts (both from
ice > water, and from increased biological activity, and from edge
melt revealing more land, and from more old dust coming to the surface...); — direct effect of CO2 on
ice (the former weakens the latter); — increasing, and increasingly warm, rain fall on
ice; — «stuck» weather systems bringing more and more warm tropical air ever further toward the poles; —
melting of sea
ice shelf increasing mobility of glaciers; — sea water getting under parts of the
ice sheets where the base is below sea level; —
melt water lubricating the
ice sheet base; — changes in ocean
currents -LRB-?)