{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,11]],"date-time":"2026-03-11T00:44:16Z","timestamp":1773189856999,"version":"3.50.1"},"reference-count":69,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2019,9,10]],"date-time":"2019-09-10T00:00:00Z","timestamp":1568073600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Geocenter variations relate the motion of the Earth\u2019s center of mass with respect to its center of figure, and represent global-scale redistributions of the Earth\u2019s mass. We investigate different techniques for estimating of geocenter motion from combinations of time-variable gravity measurements from the Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow-On missions, and bottom pressure outputs from ocean models. Here, we provide self-consistent estimates of geocenter variability incorporating the effects of self-attraction and loading, and investigate the effect of uncertainties in atmospheric and oceanic variation. The effects of self-attraction and loading from changes in land water storage and ice mass change affect both the seasonality and long-term trend in geocenter position. Omitting the redistribution of sea level affects the average annual amplitudes of the x, y, and z components by 0.2, 0.1, and 0.3 mm, respectively, and affects geocenter trend estimates by 0.02, 0.04 and 0.05 mm\/yr for the the x, y, and z components, respectively. Geocenter estimates from the GRACE Follow-On mission are consistent with estimates from the original GRACE mission.<\/jats:p>","DOI":"10.3390\/rs11182108","type":"journal-article","created":{"date-parts":[[2019,9,10]],"date-time":"2019-09-10T10:52:26Z","timestamp":1568112746000},"page":"2108","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Improved Estimates of Geocenter Variability from Time-Variable Gravity and Ocean Model Outputs"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6964-1194","authenticated-orcid":false,"given":"Tyler C.","family":"Sutterley","sequence":"first","affiliation":[{"name":"NASA Goddard Space Flight Center, Cryospheric Sciences Laboratory, Greenbelt, MD 20771, USA"},{"name":"Department of Earth System Science, University of California, Irvine, CA 92697, USA"}]},{"given":"Isabella","family":"Velicogna","sequence":"additional","affiliation":[{"name":"Department of Earth System Science, University of California, Irvine, CA 92697, USA"},{"name":"Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA"}]}],"member":"1968","published-online":{"date-parts":[[2019,9,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1867","DOI":"10.1029\/97GL01849","article-title":"Geocenter variations caused by atmosphere, ocean and surface ground water","volume":"24","author":"Dong","year":"1997","journal-title":"Geophys. 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