Nuevas estimaciones, reducen la pérdida de masa de hielo continental en la Antártida:
"A new reanalysis by two NASA scientists of the three standard ice-monitoring techniques slashes the estimated loss from East Antarctica, challenging the large, headline-grabbing losses reported lately for the continent as a whole. Although not the final word, the new study shows that researchers still have a lot to learn about the vast East Antarctic Ice Sheet.
(...)
Zwally and Giovinetto made preferred estimates for all of Antarctica, taking into account the strengths and weaknesses of the three methods. The figures came in on the low side. Published estimates for the period 1992 to 2009 had ranged from a net gain of 50 billion tons per year to a loss of 250 billion tons per year. Their new preferred estimate for 1992 to 2005 spans a far narrower range, from a gain of 27 billion tons to a loss of just 40 billion tons per year. For 1992 to 2001, the researchers estimate a loss of only 31 billion tons per year."
La estimación de este reciente artículo es la indicada como Zwally y Giovinetto 2011:
http://www.sciencemag.org/content/333/6041/401http://www.springerlink.com/content/9k58637p80534284/
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