Sentences with phrase «global ice volume»

This emphasizes that over the last 5 million years, we've also seen an increase in the size of the fluctuations of global ice volume.

These records provide both a direct measure of sea level and an indirect measure of global ice volume.

If one takes the simple view that deglaciation is forced by only global ice volume change and greenhouse feedbacks, then one would be forced to conclude that Antarctic temperature change led all of its forcings!

The phase relations among atmospheric CO2 content, temperature and global ice volume over the past 420 ka.

Nick Shackleton calculated changes in past global ice volume by measuring oxygen isotopes (atoms with different numbers of neutrons in the nuclues) in calcium carbon fossil in marine sediments.

Building on this study, the team intend to produce a new reconstruction of global ice volume across the last glacial cycle, which will help to validate their proposition that certain boundaries can define windows of instability within the climate system.

Scientists define Earth's global ice volume as a «mass budget» with ice shrinking and growing in different places around the world.

The most valuable information on rates of SLR comes from periods when global ice volumes were similar to present.

«Time periods with less than twice the modern global ice volume show almost no indications of sea level rise faster than about 2 metres per century,» said Dr Grant.

John Imbrie used time - series analysis to statistically compare the timing and cycles in the sea surface temperature and global ice volume records with patterns of the Earth's orbit.

Gerard Roe (U. Washington) showed that the rate of change of global ice volume correlates beautifully with the changes in incoming solar radiation due to Milankovitch cycles (Roe, 2006).

«Sea Level and Global Ice Volumes from the Last Glacial Maximum to the Holocene.»

For instance, here's the data for delta - oxygen - 18 from a stack of 57 ocean sediment cores, which is considered an excellent proxy for global ice volume, known as the «LR04 stack» (from Lisiecki, L.E., & Raymo, M.E. 2005.

c) Manfred Mudelsee: The phase relations among atmospheric CO2 content, temperature and global ice volume over the past 420 ka, Quaternary Science Reviews, (February 2001) Volume 20, Issue 4, Pages 583 — 589.

Except that we do make an attempt to validate the model with respect to how it has performed against the best estimate of global ice volume we have — Shackleton's 2000 record (I might add that I am not sure of any other modeling study that has tried to validate itself against the Shackleton record).

If we manage to drill a good sample, it would help place ongoing climate change within a long - term geological framework and provide compelling evidence for past changes in the atmosphere and global ice volume.

The fact that our model does a surprisingly good job with simulating the last 400,000 years of global ice volume, with no change in model physics and only one linear change in boundary conditions, argues for the fact that, despite plausible deficiencies, we have done a surprisingly good job of simulating the pattern of fluctuations in ice volume.

I agree with your first point: there's no doubt that these astronomical variations influence the global ice volume, and therefore there's reason to believe that tuning to the insolation is justified.

Lambeck, K., Rouby, H., Purcell, A., Sun, Y. & Sambridge, M. Sea level and global ice volumes from the Last Glacial Maximum to the Holocene.

The study, published in the Oct. 11 issue of the Journal of Geophysical Research, is an improvement on previous estimates of the global ice volume because it uses a physical approach, said lead study author Matthias Huss, a glaciologist at the University of Fribourg in Switzerland.

In some sense, the search for a theory of glacial - interglacial cycles amounts to a search for the «rectifier» which turns the modulation of the amplitude of the seasonal forcing into a rectified signal in global ice volume.