From NASA: Seas around the world have risen an average of nearly 3 inches since 1992, with some locations rising more than 9 inches due to natural variation, according to the latest satellite measurements from NASA and its partners. An intensive research effort now underway, aided by NASA observations and analysis, points to an unavoidable rise of several feet in the future.
NASA has alot of good information in the press release and in the details link below:
http://www.nasa.gov/press-release/nasa-science-zeros-in-on-ocean-rise-how-much-how-soon
http://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=11978
Chris Mooney from the Washington Post has been following this issue and the NASA debriefs (links are below)
About me: Sean McClure is a former Senior Advisor at the White House. Sean is currently the Suspension and Debarment Advisor to the Department of the Treasury and with over 15 years of experience working at the White House, Department of the Treasury, USAID, and Department of State. He has traveled extensively to 35 countries in Africa, Asia, Latin America and Europe.