This study focuses on understanding the coupling processes that take place in air-sea interaction during the active and suppressed phases of Madden-Julian Oscillation, and specifically the initiation of MJO. Data used for this study was gathered by a NOAA WP-3D research aircraft under the framework of the Dynamics of the Madden-Julian Oscillation (DYNAMO) research project. The aircraft-based measurements extended from 01 November to 13 December 2011, when 12 research flights ...