Mean sea level trends

Regional map of mean sea level trends from October 1992 to March 2010 as measured by radar altimeters. Some regions experience a rise of up to 10 mm per year (dark red), while others see a decrease of about 10 mm per year (dark blue). On average, the global sea level rises about 3 mm every year. This is a preliminary version of the data set that will be revealed at the ‘20 Years of Progress in Radar Altimetry Symposium’.