Oceanographer Josh Willis from NASA’s Jet Propulsion Laboratory narrates this video about the causes of sea level rise and how sea level has changed over the last two decades as observed by the Jason series of satellite missions.

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• The troubling reasons why NASA is so focused on studying sea level rise
• The Science of Earth’s Rising Seas https://www.jpl.nasa.gov/edu/news/2015/9/3/teaching-the-science-of-earths-rising-seas/