Currently the total sea level rise is about 3 millimeters per year (about 1/8 of an inch per year). Of that amount, about one-third comes from Greenland and Antarctica, one-third from glaciers like those in Alaska or the Himalayas, and one-third from the expansion of seawater as it warms. In the future, we expect Greenland and Antarctica will contribute larger amounts.
The Jason-2 mission provided unique insights into ocean currents, sea level rise and climate change for 11 years.
Data from the mission show water weight gain across the U.S. Midwest and rapid weight loss from Greenland's melting ice.
The new map of ice flow speeds throughout Antarctica will improve our understanding of the vast continent and of future sea level rise.