FN Archimer Export Format PT J TI Madden-Julian oscillation winds excite an intraseasonal see-saw of ocean mass that affects Earth’s polar motion BT AF Afroosa, M. Rohith, B. Paul, Arya Durand, Fabien Bourdallé-Badie, Romain Sreedevi, P. V. de Viron, Olivier Ballu, Valérie Shenoi, S. S. C. AS 1:1,2;2:1;3:1;4:3,4;5:5;6:1,6;7:7;8:7;9:1; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:; C1 Indian National Centre for Ocean Information Services (INCOIS), Ministry of Earth Science (MoES), Hyderabad, India School of Ocean Sciences & Technology, Kerala University of Fisheries and Ocean Studies (KUFOS), Cochin, India LEGOS, Université de Toulouse, IRD, CNRS, CNES, UPS, Toulouse, France Laboratório de Geoquímica, Instituto de Geociencias, Universidade de Brasilia, Brasilia, Brazil Mercator Ocean International, Ramonville, France Cochin University of Science and Technology, Cochin, India LIENSs, La Rochelle, France C2 INCOIS, INDIA KUFOS, INDIA UNIV TOULOUSE, FRANCE UNIV BRASILIA, BRAZIL MERCATOR OCEAN, FRANCE UNIV COCHIN, INDIA UNIV LA ROCHELLE, FRANCE IF 7.29 TC 9 UR https://archimer.ifremer.fr/doc/00704/81645/86115.pdf https://archimer.ifremer.fr/doc/00704/81645/86116.pdf https://archimer.ifremer.fr/doc/00704/81645/86117.pdf https://archimer.ifremer.fr/doc/00704/81645/91635.docx LA English DT Article CR NIVMER AB Strong large-scale winds can relay their energy to the ocean bottom and elicit an almost immediate intraseasonal barotropic (depth independent) response in the ocean. The intense winds associated with the Madden-Julian Oscillation over the Maritime Continent generate significant intraseasonal basin-wide barotropic sea level variability in the tropical Indian Ocean. Here we show, using a numerical model and a network of in-situ bottom pressure recorders, that the concerted barotropic response of the Indian and the Pacific Ocean to these winds leads to an intraseasonal see-saw of oceanic mass in the Indo-Pacific basin. This global-scale mass shift is unexpectedly fast, as we show that the mass field of the entire Indo-Pacific basin is dynamically adjusted to Madden-Julian Oscillation in a few days. We find this large-scale ocean see-saw, induced by the Madden-Julian Oscillation, has a detectable influence on the Earth’s polar axis motion, in particular during the strong see-saw of early 2013. PY 2021 PD JUN SO Communications Earth & Environment SN 2662-4435 PU Springer Science and Business Media LLC VL 2 IS 1 UT 000672136400002 DI 10.1038/s43247-021-00210-x ID 81645 ER EF