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Mass balance of the Antarctic ice sheet is positive

March 22, 2007
clipped from www.co2science.org

Wingham et al. report that “overall, the data, corrected for isostatic rebound, show the ice sheet growing at 5 1 mm year-1
“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.”
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