• Login
    About WHOAS
    View Item 
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Physical Oceanography (PO)
    • View Item
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Physical Oceanography (PO)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of WHOASCommunities & CollectionsBy Issue DateAuthorsTitlesKeywordsThis CollectionBy Issue DateAuthorsTitlesKeywords

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    Substantial sea surface temperature cooling in the Banda Sea associated with the Madden-Julian Oscillation in the boreal winter of 2015

    Thumbnail
    View/Open
    Article (3.151Mb)
    Supporting_Information_S1 (1.262Mb)
    Date
    2021-05-30
    Author
    Pei, Suyang  Concept link
    Shinoda, Toshiaki  Concept link
    Steffen, John D.  Concept link
    Seo, Hyodae  Concept link
    Metadata
    Show full item record
    Citable URI
    https://hdl.handle.net/1912/27586
    As published
    https://doi.org/10.1029/2021JC017226
    DOI
    10.1029/2021JC017226
    Keyword
     Banda Sea; sea surface temperature; Madden-Julian Oscillation (MJO); mixed layer processes; El Niño-Southern Oscillation (ENSO); Maritime Continent 
    Abstract
    Substantial (∼2°C) basin averaged sea surface temperature (SST) cooling in the Banda Sea occurred in less than a 14-day period during the 2015 boreal winter Madden-Julian Oscillation (MJO). Such rapid and large cooling associated with the MJO has not been reported at least in the last two decades. Processes that control the substantial cooling during the 2015 MJO event are examined using high-resolution ocean reanalysis and one-dimensional (1-D) ocean model simulations. Previous studies suggest that MJO-induced SST variability in the Banda Sea is primarily controlled by surface heat flux. However, heat budget analysis of the model indicates that entrainment cooling produced by vertical mixing contributes more than surface heat flux for driving the basin-wide SST cooling during the 2015 event. Analysis of the ocean reanalysis further demonstrates that the prominent coastal upwelling around islands in the southern basin occurs near the end of the cooling period. The upwelled cold waters are advected by MJO-induced surface currents to a large area within the Banda Sea, which further maintains the basin-wide cold SST. These results are compared with another MJO-driven substantial cooling event during the boreal winter of 2007 in which the cooling is mostly driven by surface heat flux. Sensitivity experiments, in which initial temperature conditions for the two events are replaced by each other, demonstrate that the elevated thermocline associated with the 2015 strong El Niño is largely responsible for the intensified cooling generated by the vertical mixing with colder subsurface waters.
    Description
    Author Posting. © American Geophysical Union, 2021. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 126(6), (2021): e2021JC017226, https://doi.org/10.1029/2021JC017226.
    Collections
    • Physical Oceanography (PO)
    Suggested Citation
    Pei, S., Shinoda, T., Steffen, J., & Seo, H. (2021). Substantial sea surface temperature cooling in the Banda Sea associated with the Madden-Julian Oscillation in the boreal winter of 2015. Journal of Geophysical Research: Oceans, 126(6), e2021JC017226.
     

    Related items

    Showing items related by title, author, creator and subject.

    • Thumbnail

      Coupled impacts of the diurnal cycle of sea surface temperature on the Madden–Julian oscillation 

      Seo, Hyodae; Subramanian, Aneesh C.; Miller, Arthur J.; Cavanaugh, Nicholas R. (American Meteorological Society, 2014-11-15)
      This study quantifies, from a systematic set of regional ocean–atmosphere coupled model simulations employing various coupling intervals, the effect of subdaily sea surface temperature (SST) variability on the onset and ...
    • Thumbnail

      Climate Process Team: improvement of ocean component of NOAA Climate Forecast System relevant to Madden-Julian Oscillation simulations 

      Shinoda, Toshiaki; Pei, Suyang; Wang, Wanqiu; Fu, Joshua X.; Lien, Ren-Chieh; Seo, Hyodae; Soloviev, Alexander (American Geophysical Union, 2021-10-04)
      Given the increasing attention in forecasting weather and climate on the subseasonal time scale in recent years, National Oceanic and Atmospheric Administration (NOAA) announced to support Climate Process Teams (CPTs) which ...
    • Thumbnail

      QBO influence on MJO amplitude over the Maritime Continent: Physical mechanisms and seasonality 

      Densmore, Casey R.; Sanabia, Elizabeth; Barrett, Bradford S. (American Meteorological Society, 2019-01-07)
      The quasi-biennial oscillation (QBO) is stratified by stratospheric zonal wind direction and height into four phase pairs [easterly midstratospheric winds (QBOEM), easterly lower-stratospheric winds, westerly midstratospheric ...
    All Items in WHOAS are protected by original copyright, with all rights reserved, unless otherwise indicated. WHOAS also supports the use of the Creative Commons licenses for original content.
    A service of the MBLWHOI Library | About WHOAS
    Contact Us | Send Feedback | Privacy Policy
    Core Trust Logo