Coupled Atmosphere–Ocean Variations on Timescales of Days Observed in the Western Tropical Pacific Warm Pool During Mid‐March 2020

DOI Web Site Web Site Web Site 被引用文献3件 参考文献39件 オープンアクセス
  • Akira Nagano
    Research Institute for Global Change Japan Agency for Marine‐Earth Science and Technology (JAMSTEC) Yokosuka Japan
  • Biao Geng
    Research Institute for Global Change Japan Agency for Marine‐Earth Science and Technology (JAMSTEC) Yokosuka Japan
  • Kelvin J. Richards
    International Pacific Research Center University of Hawai’i at Manoa Honolulu HI USA
  • Meghan F. Cronin
    Pacific Marine Environmental Laboratory National Oceanic and Atmospheric Administration Seattle WA USA
  • Kyoko Taniguchi
    Research Institute for Global Change Japan Agency for Marine‐Earth Science and Technology (JAMSTEC) Yokosuka Japan
  • Masaki Katsumata
    Research Institute for Global Change Japan Agency for Marine‐Earth Science and Technology (JAMSTEC) Yokosuka Japan
  • Iwao Ueki
    Research Institute for Global Change Japan Agency for Marine‐Earth Science and Technology (JAMSTEC) Yokosuka Japan

書誌事項

公開日
2022-09-30
資源種別
journal article
権利情報
  • http://creativecommons.org/licenses/by-nc-nd/4.0/
DOI
  • 10.1029/2022jc019032
公開者
American Geophysical Union (AGU)

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説明

<jats:title>Abstract</jats:title><jats:p>From 11 to 12 March 2020, we observed atmosphere and ocean variations during a temporal warming of the western tropical Pacific warm pool and the associated active convection on the equator by the R/V <jats:italic>Mirai</jats:italic> and unmanned surface vehicles, known as Wave Gliders. The warming, which extended the warm pool eastward at a speed of approximately 2.9 m s<jats:sup>−1</jats:sup>, was found to be caused mainly by high sensitivity of the temperature of the thin mixed layer to shortwave and longwave radiation flux. During the warming, westward‐propagating inertia‐gravity wave disturbances in addition to intensified northerly wind intermittently enhanced turbulent latent heat release into the atmosphere (>150 W m<jats:sup>−2</jats:sup>), leading to heavy rainfall from midnight to morning, so‐called <jats:italic>diurnal dancing</jats:italic>, in the eastern region of the warm pool. The strong air–sea coupling was related to the zonal wind variation trapped near the sea level, which caused their convergences, also intensified atmospheric convection. Subsequently (13–14 March), due to the atmospheric density stratification and wind speed changes, atmospheric disturbances radiated upward and ceased to be coupled with the ocean.</jats:p>

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