Mechanisms controlling mixed‐layer temperature variability in the eastern tropical Pacific on the intraseasonal timescale

摘要: [1] The Madden Julian Oscillation (MJO) is a prominent mode of intraseasonal (∼35–95 day) variability in the tropical Indian and western Pacific Oceans. Its impacts on ocean mixed-layer temperatures (MLT) eastern Ocean (ETPO) are not well-understood. A previous study mooring data at (110°W, EQ) implies vertical advection forced by MJO-generated Kelvin waves important to ETPO MLT; another, based model output over (120–100°W, 3°S–3°N), indicates meridional dominates. We analyze an state estimate find combined subsurface processes, including notable component like that expected from MJO-forced waves, dominate. However, when averaged processes horizontal both important, effects thermocline forcing (e.g., waves) small compared those local wind driven mixing advection. The results highlight importance understanding regional physics different spatial scales.