Sentences with phrase «melting edge of the ice sheet»

Dust trapped over the centuries has become concentrated at the melting edge of the ice sheet.

Not exact matches

Melting near the edges of the Greenland ice sheet, where the surface is below 4,000 feet, causes about half of its annual ice loss.

The great ice sheets of Greenland and Antarctica, which rise to over 13,000 feet above sea level, accumulate ice over most of their surfaces and melt only at their lower elevations near the edges.

These new measurements confirm what some of the more pessimistic scientists thought: The melting along the crucial edges of the two major ice sheets is accelerating and is in a self - feeding loop.

«Most ice cores are collected from the middle of the ice sheet where it rarely ever melts, or on the ice sheet edge where the meltwater flows into the ocean,» Karina Graeter, the lead author of the study as a graduate student in Dartmouth's Department of Earth Sciences, said in a statement.

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-?)

Thomas, I appreciate that they are imperfect things to compare, but have you ever seen pictures of the ice pack near the edge of the ice sheet where the melting is happening fastest?

So, as the leading edge melts, this deformation and filling would be first observed as a thinning of the sheet and, in particular, the trunk or main ice stream channel, as well as an acceleration of the stream.

Around the edges of the ice sheet, though, there is accelerated melting.

Generally yes, but there has been a lot of new information learned since the IPCC Third Assessment Report (e.g., on trends in hurricane intensity, the accelerated melting back of Arctic sea ice, the intensifying deterioration of the edges of the Greenland Ice Sheet, etc.) and Gore's presentation of the science has been updated to account for these, drawing from what are the really highly reviewed and high quality papers by leading scientisice, the intensifying deterioration of the edges of the Greenland Ice Sheet, etc.) and Gore's presentation of the science has been updated to account for these, drawing from what are the really highly reviewed and high quality papers by leading scientisIce Sheet, etc.) and Gore's presentation of the science has been updated to account for these, drawing from what are the really highly reviewed and high quality papers by leading scientists.

-- Susan Solomon, Nature The Long Thaw is written for anyone who wishes to know what cutting - edge science tells us about the modern issue of global warming and its effects on the pathways of atmospheric chemistry, as well as global and regional temperatures, rainfall, sea level, Arctic sea - ice coverage, melting of the continental ice sheets, cyclonic storm frequency and intensity and ocean acidification.

If a relatively small chunk of ice currently plugging the edge of an ice sheet in Antarctica were to melt, it could release massive amounts of ice into the ocean that would significantly increase global sea level for the next 10,000 years, according to a new report.

In a new study, Box and a team of researchers describe the decline in ice sheet reflectivity and the reasons behind it, noting that if current trends continue, the area of ice that melts during the summer season is likely to expand to cover all of Greenland for the first time in the observational record, rather than just the lower elevations at the edges of the continent, as is the case today.

In fact, 2005 looks to feature the greatest amount of melting of the edge of the ice sheet in Greenland in about 30 years (or more):

Over the course of several years, turbulent water overflow from a large melt lake carved this 60 - foot - deep (18.3 meter - deep) canyon in Greenland's Ice Sheet (note people near left edge for scale).

This ocean will be incredibly important for sea level rise, because the easiest way to destabilise the Antarctic Ice Sheet is to warm up the ocean and melt the ice shelves (the edges of the ice sheet which extend over the ocean) from belIce Sheet is to warm up the ocean and melt the ice shelves (the edges of the ice sheet which extend over the ocean) from bSheet is to warm up the ocean and melt the ice shelves (the edges of the ice sheet which extend over the ocean) from belice shelves (the edges of the ice sheet which extend over the ocean) from belice sheet which extend over the ocean) from bsheet which extend over the ocean) from below.

An ice sheet teetering on the edge of melting away is going to have a huge response because just a little extra energy changes the albedo.

The edges of Greenland's 1.7 - million - km2 ice sheet regularly melt in summer, even in years when the ice sheet as a whole grows because of snowfall in its higher, colder center.

But because the ice sheet is steep at its edges but flatter toward the middle, each successive degree of warming exposes a larger area of ice to melting than the last.

Each increase in temperature drives the upper edge of the melt zone farther inland and higher up the ice sheet.