Measuring the Depths: The Science of Sea Level

Life all over the planet—even far from the coasts—depends on the oceans. A pair of NASA satellites, PACE and SWOT, is giving us a fresh look at Earth’s water. PACE tracks color changes driven by tiny plankton, which give us a big-picture view of ocean life. By measuring sea level height from space, SWOT shows ocean currents and other features in new detail. NASA scientists Cecile Rousseaux, Kelsey Bisson, and Josh Willis dive into new research with a lot of color and a little bit of rock and roll.