first_page settings Order Article Reprints Open AccessCommunication The Global Patterns of Interannual and Intraseasonal Mass Variations in the Oceans from GRACE and GRACE Follow-On Records by Damien Delforge 1,2,* [ORCID] , Olivier de Viron 1, Fabien Durand 3,4 and Véronique Dehant 2 1 Littoral, Environnement et Sociétés, Université de La Rochelle and CNRS (UMR7266), 17000 La Rochelle, France 2 Royal Observatory of Belgium, 1180 Brussels, Belgium 3 LEGOS (UMR5566), CNRS/CNES/IRD/UPS, 31400 Toulouse, France 4 Institute of Geosciences, University of Brasilia (UnB), Brasilia 70297-400, Brazil * Author to whom correspondence should be addressed. Remote Sens. 2022, 14(8), 1861; https://doi.org/10.3390/rs14081861 Submission received: 11 February 2022 / Revised: 5 April 2022 / Accepted: 8 April 2022 / Published: 12 April 2022 (This article belongs to the Section Ocean Remote Sensing) Download keyboard_arrow_down Browse Figures Review Reports Versions Notes Abstract We decompose the monthly global ocean bottom pressure (OBP) from GRACE(-FO) mass concentration solutions, with trends and seasonal harmonics removed from the signal, to extract 23 significant regional modes of variability. The 23 modes are analyzed and discussed considering sea-level anomalies (SLA), wind stress curl (WSC), and major climate indices. A total of two-thirds of the patterns correspond to extratropical regions and are substantially documented in other global or regional studies. Over the equatorial band, the identified modes are unprecedented, with an amplitude ranging between 0.5 and 1 cm. With smaller amplitude than extratropical patterns, they appear to be less correlated with the local SLA or WSC; yet they present significantly coherent dynamics. The Pacific Ocean modes show significant correlations with the Pacific decadal oscillation (PDO) and El Niño southern oscillation (ENSO).