Sentences with phrase «rapid ice melt»

A panel of the world's leading climate scientists strongly asserted Friday that «it is extremely likely that human influence has been the dominant cause» of global warming since 1950 and warned of more rapid ice melt and rising seas if governments do not aggressively act to reduce the pace of greenhouse gas emissions.

Even the deniers realize that there's some rapid ice melt this year.

Each of us can contribute to stopping the rapid ice melt of the glaciers and saving the planet, and here are a few suggestions how to do it:

One of Antarctica's largest ice shelves is thinning from above and below, helping scientists finally understand just what exactly is causing this rapid ice melt, according to new research.

In the Antarctic, where the summer season just wrapped up, rapid ice melt led to the lowest sea ice minimum ever recorded for the area.

It also reviews recent scientific literature on «worst - case» global average sea - level projections and on the potential for rapid ice melt in Greenland and Antarctica.

Not exact matches

Following the rapid melting and quick freeze late last week, authorities across the region are dealing with ice jams and related flooding.

«Strong El Niño events cause large changes in Antarctic ice shelves: Oscillations of water temperature in the tropical Pacific Ocean can induce rapid melting of Antarctic ice shelves.»

A new study says that climate - induced feedback loops could lead to a change in ocean stratification and the more rapid melting of ice sheets.

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.

Melting can be rapid: as the last ice age ended, the disappearance of the ice sheet covering North America increased sea level by more than a metre per century at times.

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,»

Instead, Levy documented through LIDAR and time - lapse photography a rapid retreat of ground ice in Garwood Valley, similar to the lower rates of permafrost melt observed in the coastal Arctic and Tibet.

Other recent research shows that without the channelized underbelly of the ice shelf and glacier, melting would be even more rapid.

Kopp noted recent findings have revealed the possibility of even more serious impacts including «ice sheet melt in Greenland and Antarctica to compound extremes, where events occurring simultaneously or in rapid sequence can amplify the risks to both human and natural systems.»

Ocean heat drives rapid basal melt of the Totten Ice Shelf.

This indicates a rapid disappearance rather than a gradual melting of the ice sheet.

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.

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.

During the last deglaciation, and likely also the three previous ones, the onset of warming at both high southern and northern latitudes preceded by several thousand years the first signals of significant sea level increase resulting from the melting of the northern ice sheets linked with the rapid warming at high northern latitudes (Petit et al., 1999; Shackleton, 2000; Pépin et al., 2001).

We see early indications of this effect in the massive and unanticipated rapid melting of the Arctic sea ice.

Jacobson has also said that soot from diesel engines, coal - fired power plants and burning wood is a «bigger cause of global warming than previously thought, and is the major cause of the rapid melting of the Arctic's sea ice».

Rather, warm water melting the ice at the ice / ocean interface is causing rapid changes, including ice - shelf collapse, and acceleration and recession of Pine Island Glacier.

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.

This is because it is grounded below sea level, and marine ice sheets such as these are susceptible to rapid melting at their base.

When this is combined with rapid surface melt during warm summers, the ice shelves can disintegrate very quickly.

The ice sheet in this area is grounded up to 2000 m below sea level, making it intrinsically unstable6 and susceptible to rapid melting at its base, and to rapid migration of the grounding line up the ice stream7 (see Marine Ice Sheet Instabilitice sheet in this area is grounded up to 2000 m below sea level, making it intrinsically unstable6 and susceptible to rapid melting at its base, and to rapid migration of the grounding line up the ice stream7 (see Marine Ice Sheet Instabilitice stream7 (see Marine Ice Sheet InstabilitIce Sheet Instability).

Just last year, for example, the UK had its second - coldest March since records began, prompting the Met Office to call a rapid response meeting of experts to get to grips with whether melting Arctic sea - ice could be affecting British weather.

Main results show that ice cap melt on Greenland and / or Antarctica injects fresh water into oceans near respective continents causing rapid sea level rise and shuts down AMOC and / or SMOC leading to enormous global climate disruption, including massive storms.»

Ice in the permafrost is melting, contributing to rapid erosion.

Scientists agree that a doubling of atmospheric CO2 levels could result in temperature increases of between 1.5 and 4.5 °C, caused by rapid changes such as snow and ice melt, and the behaviour of clouds and water vapour.

An ice - free North coast in the past few millenia says nothing about the desirability of driving ice melt (or climate change generally) at extremely rapid rates.

And that would seem to be a more rapid rise than we have seen or should expect to see with ice melting.

When there are alternative explanations for arctic ice melt (historical writings that suggest natural periods of very rapid decline, ever - increasing levels of soot that can cause and accelerate melting), how can you be so certain that the cause is CO2 - induced?

But it is on the eastern Peninsula that the most rapid summer warming has occurred, and where the surface - melting has caused ice shelf collapse (indeed, James Ross Island wasn't really an island until 1995, when the Prince Gustav ice shelf collapsed).

Could the rapid melting of the ice also trigger mega-tsunamis?

The notion of relatively rapid melting of the Greenland ice sheet was once openly ridiculed by some people, but not any more.

They offered a conclusion that the «coupling between surface melting and ice - sheet flow provides a mechanism for rapid, large - scale, dynamic responses of ice sheets to climate warming».

Another possibility might be a slowing of deep circulation (not sure how much there is, mind), in which case the opposite occurs, and the surface waters heat up even faster, leading to yet more rapid surface melt, smaller winter ice volumes and so on.

Melting permafrost outgasses CO2 and methane, and the decrease in sea ice allows oceanic CO2 to mix back into the atmosphere; taken together, these processes greatly amplify the effect of increased sunlight, driving a relatively rapid exodus from the ice age.

The IPCC Fourth Assessment Report did not specifically address these competing factors and essentially ignored the likelihood of much more rapid melting of Greenland and other land - based ice sheets.

We have seen some already, in the rapid disappearance of Arctic summer ice, the accelerating glacier melts in Greenland, and heat waves and forest fires in North America and Asia.

Despite continued melting of the Laurentide ice sheet throughout the Pleistocene - Holocene transition, the only major perturbation of the NADW after Younger Dryas was the rapid drainage of Lake Ojibway at 8.2 ka.

So, the positive feedback between melt and velocities implies that more melt leads to higher velocities, which bring in more ice from cold regions to warm regions which increases the melt and hence the velocity etc, with as a final result a rapid loss of ice and hence an enhanced increased sea level.

This year's ice melt was «so vast and rapid it unnerve (d) the experts» at a recent conference on the subject at the University of Alaska in Fairbanks.

«That means that reducing emissions of these climate pollutants would provide rapid climate benefits, especially in the Arctic where black carbon pollution accelerates the melting of ice and snow,» said Erika Rosenthal, the Earthjustice attorney who was part of the author team for the UNEP / WMO assessment.

And how that contributes to the rapid rate of sea - ice melting.

We've all heard about the rapid pace of the Arctic ice and glaciers melting.

MacKinnon says the lack of sea ice changes the dynamics of that process by enabling the ocean to absorb more heat, creating a positive - feedback loop that begets more rapid sea ice melting.

The Vice news program on HBO had an interesting story of how the Glacial land ice is melting in Greenland at a rapid rate.