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  • DYNAMO/CINDY/AMIE/LASP: Processes, Dynamics, and Prediction of MJO Initiation x
  • Journal of Climate x
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Adrian J. Matthews, Dariusz B. Baranowski, Karen J. Heywood, Piotr J. Flatau, and Sunke Schmidtko

the mission, the glider carried out 738 dive cycles, an average of 5.6 dive cycles per day or a time interval between the start of successive dives of 4.3 h. Of these, 564 dives (76%) were to 1000-m depth; the remaining dives were to 300 or 500 m. The glider vertical velocity is in the range 0.15–0.25 m s −1 . Temperature and salinity were sampled every 5 s, hence the effective vertical resolution is approximately 1 m. The glider data were corrected for thermal lags, sensor response time, and

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Simon P. de Szoeke, James B. Edson, June R. Marion, Christopher W. Fairall, and Ludovic Bariteau

wind stress drives Ekman convergence on the equator, resulting in equatorial downwelling. However, the zonal wind stress occurs in short bursts that last several days. Stress observations exceeded 0.2 N m −2 for a total of 27 h (1.5% of the time sampled) during DYNAMO and the peak stress was 1 N m −2 . Such (eastward) westerly wind bursts can drive mixing of temperature and salinity across the thermocline ( Smyth et al. 1996 ), and accelerate zonal currents in the ocean, whose convergence

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Simon P. de Szoeke and Eric D. Maloney

before the onset of active convection. Wind and clouds associated with the convection quickly expunge the warm SST anomaly by decreased downward radiative flux, increased surface turbulent heat flux, and increased and upper ocean mixing ( Moum et al. 2014 ), even when the upper ocean entrains warmer water from the salinity stratified barrier layer during westerly wind bursts ( Pujiana et al. 2017 ). Compared to intraseasonal fluxes diagnosed using the time-mean SST field, intraseasonal SST anomalies

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