Not exact matches
A few days later, back at her office whiteboard, she thought
about the
collapsed sheet of
ice above each lake, full of giant fractures like the ones above Grimsvotn.
When scientists talk
about the «
collapse» of an
ice sheet, they mean irreversible, rapidly increased rates of recession.
We believe that the standfirst of this piece, which states that the author «takes issue with some common misconceptions
about how
ice -
sheets move, and doubts many pronouncements
about the «
collapse» of the planet's
ice sheets» misleads the reader by assuming that Ollier's arguments are correct.
Geologic shoreline evidence has been interpreted as indicating a rapid sea level rise of a few meters late in the Eemian to a peak
about 9 meters above present, suggesting the possibility that a critical stability threshold was crossed that caused polar
ice sheet collapse [84]--[85], although there remains debate within the research community
about this specific history and interpretation.
Among the benefits of paying the AGU associate membership even if you're not a climate scientist — prompt notice of new papers, some
about climate, e.g. how do surface meltwater lakes contribute to
ice sheet collapse.
Again
about WAIS
collapse Here at this mark 35 mins in R. Alley explains why
Ice Sheet retreat is based on thresholds (local topography).
Until we have a shift in attitudes in the USA towards the precautionary approach, we will continue to bicker
about whether this or that climate impact (be it frogs, salmon, hurricanes,
ice sheet collapse, etc.) is REALLY due to climate change or not.
In Hansen, 2005, he talks
about the use of the word «explosive» in relationship to
ice sheet collapse.
Revelle (1983); similarly Thomas et al. (1979); Bentley (1980) saw a possible
ice sheet collapse in the next 500 years; but Bentley (1982) said melting could take thousands of years; this was disputed by Hughes (1982); Hollin (1980) tried to demonstrate an East Antarctic
ice sheet surge
about 95,000 years ago; for predictions of meter - scale rises, see Jones and Henderson - Sellers (1990), pp. 10 - 11, 15; a skeptic: Van der Veen (1985); Van der Veen (1988).
Right, but there hasn't been an
ice sheet collapse we're on the left hand case, not the right hand case, so the next time someone blathers on
about intense storms and global warming, you set»em straight, ok?
When one couples the plausibility of underground heat causing instability in one region with the old newspaper articles
about fears of
ice sheet collapse from 100 years ago, at a minimum a reasonable person should wonder what has really been going on for many centuries.
Scientific Discipline Cryosphere Speaker Eric Rignot (NASA Jet Propulsion Laboratory) Abstract Modern views of
ice sheets provided by satellites, airborne surveys, in situ data and paleoclimate records while transformative of glaciology have not fundamentally changed concerns
about ice sheet stability and
collapse that emerged in the 1970's.
What is significant
about this paper is that GHG forcing that is supposedly causing exponential, run - away warming,
collapse of the polar
ice sheets, retreat of the worlds glaciers, etc since around 1960 is not visible at all in the sea level record.
Recent research has raised concerns
about the possible
collapse of the West Antarctic
Ice Sheet and how this could double sea level rise projections for 2100.
Most of that
ice is — for now — stable, but scientists are concerned that the massive West Antarctic Ice Sheet, which holds about 11 feet of potential sea level rise, has reached a tipping point and will collap
ice is — for now — stable, but scientists are concerned that the massive West Antarctic
Ice Sheet, which holds about 11 feet of potential sea level rise, has reached a tipping point and will collap
Ice Sheet, which holds
about 11 feet of potential sea level rise, has reached a tipping point and will
collapse.
We will explain more on
ice sheet collapse later, but prior to
about 1900, we know sea level was stable for several thousand years.
Deep uncertainty persists
about the likelihood of a rapid
ice -
sheet «
collapse» contributing to a major acceleration of sea - level rise; for the coming century, the probability of such an event is generally considered to be low but not zero (e.g., Bamber and Aspinall, 2013).
«We're doing
about the most we can do right now to study the possible
collapse of the west
ice sheet,» said Dr. Richard Cameron, NSF program manager for glaciology.
The two glaciers between them account for 12 % of the island's
ice sheet, and if both
collapsed into the sea and melted entirely, global sea levels would rise by
about a metre.
Conclusion The best available climate - change science plainly tells us that «We don't * WE DO * have to worry
about the genuinely dangerous scenarios (e.g.
ice sheet collapse, AMOC
collapse) on timescales of [more than] a century.»
This raises new concern
about the overall stability of the West Antarctic
Ice Sheet, the
collapse of which would trigger another five to six metres [approximately 16 to 20 feet] of sea level rise.
See also: Antarctic Octopus Genes Contain Clues
About Ancient Catastrophic
Ice Sheet Collapse
Recently, the news
about the climate crisis has included some hard things to read — like the announcement by scientists that the
collapse of the West Antarctic
ice sheet is now irreversible.