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    Response of the Western Tropical Pacific to the Asian Winter Monsoon: The Generation of the Mindanao Dome

    Source: Journal of Physical Oceanography:;1991:;Volume( 021 ):;issue: 009::page 1386
    Author:
    Masumoto, Y.
    ,
    Yamagata, T.
    DOI: 10.1175/1520-0485(1991)021<1386:ROTWTP>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: We have investigated the evolution of the Mindanao Dome off the Philippine coast using the GFDL ocean model. It is found that the model's Mindanao Dome evolves in late fall due to local upwelling when a positive curl associated with the northeast Asian winter monsoon increases over the region. It expands eastward with a recirculation composed of the North Equatorial Current in the north, the Mindanao Current in the west, and the North Equatorial Countercurrent in the south. After reaching a maximum in winter, it begins to decay in spring due to an intrusion of downwelling long Rossby waves excited in winter by the northeast trade winds farther eastward near 160°E, as well as a retreat of the local positive wind-stress curl. Further control runs demonstrate that the variation of the model's Mindanao Dome is almost perfectly determined by the change of the wind field in the western Pacific west of the date line. A possible link between the Asian winter monsoon and the seawater temperature anomaly in the western Pacific appears to be the origin of the biennial oscillation of the heat content anomaly in the western tropical Pacific. This study suggests that the Asian monsoon system, i.e., the air?sea?land system, may strongly regulate oceanic conditions both seasonally and interannually in the tropical Pacific west of the date line.
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      Response of the Western Tropical Pacific to the Asian Winter Monsoon: The Generation of the Mindanao Dome

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4164862
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    contributor authorMasumoto, Y.
    contributor authorYamagata, T.
    date accessioned2017-06-09T14:50:06Z
    date available2017-06-09T14:50:06Z
    date copyright1991/09/01
    date issued1991
    identifier issn0022-3670
    identifier otherams-27815.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4164862
    description abstractWe have investigated the evolution of the Mindanao Dome off the Philippine coast using the GFDL ocean model. It is found that the model's Mindanao Dome evolves in late fall due to local upwelling when a positive curl associated with the northeast Asian winter monsoon increases over the region. It expands eastward with a recirculation composed of the North Equatorial Current in the north, the Mindanao Current in the west, and the North Equatorial Countercurrent in the south. After reaching a maximum in winter, it begins to decay in spring due to an intrusion of downwelling long Rossby waves excited in winter by the northeast trade winds farther eastward near 160°E, as well as a retreat of the local positive wind-stress curl. Further control runs demonstrate that the variation of the model's Mindanao Dome is almost perfectly determined by the change of the wind field in the western Pacific west of the date line. A possible link between the Asian winter monsoon and the seawater temperature anomaly in the western Pacific appears to be the origin of the biennial oscillation of the heat content anomaly in the western tropical Pacific. This study suggests that the Asian monsoon system, i.e., the air?sea?land system, may strongly regulate oceanic conditions both seasonally and interannually in the tropical Pacific west of the date line.
    publisherAmerican Meteorological Society
    titleResponse of the Western Tropical Pacific to the Asian Winter Monsoon: The Generation of the Mindanao Dome
    typeJournal Paper
    journal volume21
    journal issue9
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/1520-0485(1991)021<1386:ROTWTP>2.0.CO;2
    journal fristpage1386
    journal lastpage1398
    treeJournal of Physical Oceanography:;1991:;Volume( 021 ):;issue: 009
    contenttypeFulltext
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