The researchers used a 16 - year record of satellite altimeter measurements of wave heights. (sciencedaily.com)
These increases were measured using satellite altimeter measurements since 1992, including the U.S. / European TOPEX / Poseidon, Jason - 1, Jason - 2, and Jason - 3 satellite missions. (sciencedaily.com)
Sea level changes can be measured using tide gauges and remotely from space using satellite altimeters. (plu.mx)