11-20-2006, 09:00 AM
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#41 (permalink)
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Junkie
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http://www.co2science.org/scripts/CO.../V9/N45/C2.jsp
Quote:
Antarctic Ice Sheet Mass Balance Reference
Wingham, D.J., Shepherd, A., Muir, A. and Marshall, G.J. 2006. Mass balance of the Antarctic ice sheet. Philosophical Transactions of the Royal Society A 364: 1627-1635.
What was done
The authors "analyzed 1.2 x 108 European remote sensing satellite altimeter echoes to determine the changes in volume of the Antarctic ice sheet from 1992 to 2003." This survey, in their words, "covers 85% of the East Antarctic ice sheet and 51% of the West Antarctic ice sheet," which together comprise "72% of the grounded ice sheet.""
What was learned
Wingham et al. report that "overall, the data, corrected for isostatic rebound, show the ice sheet growing at 5 ± 1 mm year-1." To calculate the ice sheet's change in mass, however, "requires knowledge of the density at which the volume changes have occurred," and when the researchers' best estimates of regional differences in this parameter are used, they find that "72% of the Antarctic ice sheet is gaining 27 ± 29 Gt year-1, a sink of ocean mass sufficient to lower [authors' italics] global sea levels by 0.08 mm year-1." This net extraction of water from the global ocean, according to Wingham et al., occurs because "mass gains from accumulating snow, particularly on the Antarctic Peninsula and within East Antarctica, exceed the ice dynamic mass loss from West Antarctica."
What it means
Contrary to all the horror stories one hears about global warming-induced mass wastage of the Antarctic ice sheet leading to rising sea levels that gobble up coastal lowlands worldwide, the most recent decade of pertinent real-world data suggest that forces leading to just the opposite effect are apparently prevailing, even in the face of what climate alarmists typically describe as the greatest warming of the world in the past two millennia or more.
Reviewed 8 November 2006
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So global warming causes ice caps to grow? Sorry if I dont believe the hype with all this conflicting scientific data which is simply ignored.
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"Smite the rocks with the rod of knowledge, and fountains of unstinted wealth will gush forth." - Ashbel Smith as he laid the first cornerstone of the University of Texas
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