Ocean feedback to pulses of the Madden–Julian Oscillation in the equatorial Indian Ocean

James N. Moum (), Kandaga Pujiana, Ren-Chieh Lien and William D. Smyth
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James N. Moum: College of Earth, Ocean and Atmospheric Sciences, Oregon State University
Kandaga Pujiana: College of Earth, Ocean and Atmospheric Sciences, Oregon State University
Ren-Chieh Lien: Applied Physics Laboratory, University of Washington
William D. Smyth: College of Earth, Ocean and Atmospheric Sciences, Oregon State University

Nature Communications, 2016, vol. 7, issue 1, 1-7

Abstract: Abstract Dynamical understanding of the Madden–Julian Oscillation (MJO) has been elusive, and predictive capabilities therefore limited. New measurements of the ocean’s response to the intense surface winds and cooling by two successive MJO pulses, separated by several weeks, show persistent ocean currents and subsurface mixing after pulse passage, thereby reducing ocean heat energy available for later pulses by an amount significantly greater than via atmospheric surface cooling alone. This suggests that thermal mixing in the upper ocean from a particular pulse might affect the amplitude of the following pulse. Here we test this hypothesis by comparing 18 pulse pairs, each separated by

Date: 2016
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DOI: 10.1038/ncomms13203

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