Learn how climate scientists use space-based observations of sea level in this interactive activity from NASA. Observations of sea level can be used to predict weather events, improve tsunami computer models and early warning systems, and study climate change. An interactive visualization tool shows a global map of sea levels, and videos explain more about specific events, including a large El Niño (November 1997), Hurricane Katrina (August 2005), the Indian Ocean tsunami (December 2004), and a La Niña (February 1999). In addition, there are descriptions of three missions: TOPEX/Poseidon, Jason 1, and Jason 2.
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