Last week, NASA scientists published a study in the "Journal of Glaciology" claiming that the continent of Antarctica is gaining ice, rather than losing it, to the tune of 82 gigatons per year from 2003 to 2008. Geoscientist Christopher Harig of Princeton University defends GRACE measurements and the finding that Antarctica is losing mass, and that a key part of the difference between his research and the new study involves how researchers handle “glacial isostatic adjustment” or GIA.
In response to NASA scientist James Hansen's paper, climate scientist Michael Oppenheimer of Princeton University affirmed: "If we cook the planet long enough at about two degrees warming, there is likely to be a staggering amount of sea level rise. Key questions are when would greenhouse-gas emissions lock in this sea level rise and how fast would it happen? The latter point is critical to understanding whether and how we would be able to deal with such a threat."