Has the Rate of Sea Level Rise Accelerated During the Altimeter Era?

R Steven Nerem, Smead Aerospace Engineering Sciences, Colorado Center for Astrodynamics Research, University of Colorado Boulder, Boulder, CO, United States, John Fasullo, National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, CO, United States, Benjamin Hamlington, Jet Propulsion Laboratory, Pasadena, United States, Dallas S Masters, University of Colorado at Boulder, Aerospace Engineering Sciences, Boulder, CO, United States, Mark A Merrifield, University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, Gary T Mitchum, University of South Florida Tampa, College of Marine Science, Tampa, FL, United States, Philip R Thompson, University of Hawaiʻi at Mānoa, Oceanography, Honolulu, United States and Brian D Beckley, Stinger Ghaffarian Technologies Greenbelt, Greenbelt, MD, United States