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Ocean Topography and Cryosphere Branch / Laboratory for Satellite Altimetry / Sea Level Rise

Project background

According to the IPCC Fourth Assessment Report (FAR), global mean sea level may increase by 0.5 m over the next 50 to 100 years, and more if significant accelerations occur in the next couple of decades. There is already evidence of a recent acceleration. Current satellite altimeter observations show sea level rising at ~3 mm/yr, nearly twice as fast as the tide gauge measured rate over the past 100 years.

CLS has created a tutorial on satellite radar altimetry is available at

Radar altimetry measurement system