Sentences with phrase «physics of ice sheet»
For example, Hansen's recent paper on Scientific Reticence is quite explicit that much of important physics of ice sheets is not included in the models, hence his raising of matters to do with nonlinear behaviour (eg disintegration) of ice sheets.
http://www.realclimate.org/
To study the concept, NASA scientists used a numerical depiction of the physics of ice sheets to capture natural sources of heating and heat transport from freezing, melting and liquid water; friction; and other processes.
They used the Ice Sheet System Model (ISSM), a numerical depiction of the physics of ice sheets developed by scientists at JPL and the University of California, Irvine.
Not exact matches
Another promising approach involves combining physics, statistical modeling and computing to derive sound projections for the future of ice sheets.
Scientists may also become able to distinguish between different scenarios sooner by studying the physics of local ice - sheet changes and refining reconstructions of changes during warm periods in geological history.
The West Antarctic Ice Sheet: Instability, Disintegration, and Initiation of Ice Ages, Reviews of Geophysics and Space Physics, Vol.
Evolving Understanding of Antarctic Ice - Sheet Physics and Ambiguity in Probabilistic Sea - Level Projections, Earth's Future, 5.
It's interesting to note that most of these elements include physics that modellers are least confident about — hydrology, ice sheets and vegetation dynamics.
And through detailed studies of the local physics of ice - sheet changes and more refined reconstructions of ice - sheet changes during warm periods of the geological past, scientists may become able to distinguish between the two roads sooner.
The problem with the paleoclimate ice sheet models is that they do not generally contain the physics of ice streams, effects of surface melt descending through crevasses and lubricating basal flow, or realistic interactions with the ocean.
For example, how much confidence can we really have in results from ice sheet models, which very likely miss important mechanisms (e.g., due to limited understanding of ocean - ice shelf interactions, calving physics and influence of small - scale topography)?
When are we going to see «the physics» of ice sheets on Greenland and Antarctica added to the models?
There will be some clear failures where there are reasons to suspect that some of the (up to now) excluded physics is dominant (i.e. Heinrich events that rely on ice sheet dynamics), but pretty much everything else is fair game — as long of course there is a good hypothesis to test.
• Thorough understanding of the physics and dynamics of the Greenland and Antarctic ice sheets, with a view to predicting sea level rise within 20 % for a specified change in climate over the ice sheets....»
Our physical patterns are based on the physics of glacier / ice sheet melt (static equioibrium fingerprints), glacial isostatic adjustment models, and an ensemble of GCMs to inform the ocean dynamic contribution.
Evolving understanding of Antarctic Ice - Sheet physics and ambiguity in probabilistic sea - level projections.
Evolving Understanding of Antarctic Ice - Sheet Physics and Ambiguity in Probabilistic Sea - Level Projections, Earth's Future, 5.
Climate change research topics identified for immediate action • Thorough understanding of the physics and dynamics of the Greenland and Antarctic ice sheets, with a view to predicting sea level rise within 20 % for a specified change in climate over the ice sheets.
So all it takes is some surface reconstructions and some flux data from a crude GCM to provide a test for a continental scale model of ice sheets that incorporate basic physics and include the Schoof mechanism.
Narrowing the range of late - century projections earlier than that will require studies focused on understanding smaller - scale ice - sheet physics and tightening the constraints provided by the geological record.
The continental - scale behavior of the ice sheets depends upon difficult - to - model physics taking place at a much smaller scale.
In the paper, which was published in the open access journal Atmospheric Chemistry and Physics Discussions, Hansen is joined by 16 colleagues, some of whom are experts in the Greenland and Antarctic ice sheets.
It's interesting to note that most of these elements include physics that modellers are least confident about — hydrology, ice sheets and vegetation dynamics.