2/15/2024 0 Comments Surface waves and deep ocean waves![]() J Geophys Res 102:8533–8553ĭuchon CE (1979) Lanczos filtering in one and two dimensions. J Clim 22:3006–3030Ĭronin MF, McPhaden MJ (1997) The upper ocean heat balance in the western equatorial Pacific warm pool during September–December 1992. J Clim 23:6624–6640ĬLIVAR Madden–Julian Oscillation Working Group (2009) MJO simulation diagnostics. J Clim 12:1990–2009Ĭhou C, Hsueh YC (2010) Mechanisms of northward propagating intraseasonal oscillation-a comparison between the Indian Ocean and the western North Pacific. Washington State Convention and Trade Center, Seattle, pp 11–15īretherton CS, Widmann M, Dymnikov VP, Wallace JM, Blade I (1990) The effective number of spatial degrees of freedom of a time-varying field. In: eighth symposium on integrated observing and assimilation systems for atmosphere, oceans, and land surface, AMS 84th annual meeting. J Atmos Sci 6:2726–2748īehringer DW, Xue Y (2004) Evaluation of the global ocean data assimilation system at NCEP: the Pacific Ocean. However, the local and remote effects of such equatorial oceanic Kelvin waves on the SST and deep oceanic temperature anomalies, especially north of the equator, differ from different basins through the consequential coastal Kelvin waves and reflected Rossby waves.Īnnamalai H, Sperber KR (2005) Regional heat sources and the active and break phases of boreal summer intraseasonal (30‒50 day) variability. Significant BSISO-induced oceanic temperature anomalies occur in the equatorial Indian Ocean and western Pacific, with the largest-amplitude anomalous signals arising around the thermocline and extending downward into the deep ocean to below 1000 m or more, which are associated with the equatorial eastward-propagating oceanic Kelvin waves forced by anomalous surface wind stress. With the BSISO as an organized entity evolving both eastward and northward from the equatorial Indian Ocean, the BSISO-induced SST anomalies propagate coherently into several basins, including the Arabian Sea, Bay of Bengal, South China Sea, and western Pacific, characterized by the alternate occurrence of basin-wide positive and negative SST anomalies, which primarily respond to the active and suppressed convection phases of the BSISO due to anomalous southwesterlies and northeasterlies together with the resultant surface heating anomalies. ![]() This study uses composite analysis of satellite-observed sea surface temperature (SST) data, as well as atmospheric and oceanic reanalysis datasets for the period 1998–2013, to identify the intraseasonal behavior of SST and deep ocean temperatures during the life cycle of the BSISO. The 30–60-day boreal summer atmospheric intraseasonal oscillation (BSISO) is the predominant intraseasonal variability of the Asian summer monsoon, and has a strong dynamical and thermodynamical impact on the underlying oceans in the northern Indian Ocean–western Pacific.
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