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    Response of the Indian Ocean Basin Mode and Its Capacitor Effect to Global Warming

    Source: Journal of Climate:;2011:;volume( 024 ):;issue: 023::page 6146
    Author:
    Zheng, Xiao-Tong
    ,
    Xie, Shang-Ping
    ,
    Liu, Qinyu
    DOI: 10.1175/2011JCLI4169.1
    Publisher: American Meteorological Society
    Abstract: he development of the Indian Ocean basin (IOB) mode and its change under global warming are investigated using a pair of integrations with the Geophysical Fluid Dynamics Laboratory Climate Model version 2.1 (CM2.1). In the simulation under constant climate forcing, the El Niño?induced warming over the tropical Indian Ocean (TIO) and its capacitor effect on summer northwest Pacific climate are reproduced realistically. In the simulation forced by increased greenhouse gas concentrations, the IOB mode and its summer capacitor effect are enhanced in persistence following El Niño, even though the ENSO itself weakens in response to global warming. In the prior spring, an antisymmetric pattern of rainfall?wind anomalies and the meridional SST gradient across the equator strengthen via increased wind?evaporation?sea surface temperature (WES) feedback. ENSO decays slightly faster in global warming. During the summer following El Niño decay, the resultant decrease in equatorial Pacific SST strengthens the SST contrast with the enhanced TIO warming, increasing the sea level pressure gradient and intensifying the anomalous anticyclone over the northwest Pacific. The easterly wind anomalies associated with the northwest Pacific anticyclone in turn sustain the SST warming over the north Indian Ocean and South China Sea. Thus, the increased TIO capacitor effect is due to enhanced air?sea interaction over the TIO and with the western Pacific. The implications for the observed intensification of the IOB mode and its capacitor effect after the 1970s are discussed.
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      Response of the Indian Ocean Basin Mode and Its Capacitor Effect to Global Warming

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4213901
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    contributor authorZheng, Xiao-Tong
    contributor authorXie, Shang-Ping
    contributor authorLiu, Qinyu
    date accessioned2017-06-09T16:40:22Z
    date available2017-06-09T16:40:22Z
    date copyright2011/12/01
    date issued2011
    identifier issn0894-8755
    identifier otherams-71952.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4213901
    description abstracthe development of the Indian Ocean basin (IOB) mode and its change under global warming are investigated using a pair of integrations with the Geophysical Fluid Dynamics Laboratory Climate Model version 2.1 (CM2.1). In the simulation under constant climate forcing, the El Niño?induced warming over the tropical Indian Ocean (TIO) and its capacitor effect on summer northwest Pacific climate are reproduced realistically. In the simulation forced by increased greenhouse gas concentrations, the IOB mode and its summer capacitor effect are enhanced in persistence following El Niño, even though the ENSO itself weakens in response to global warming. In the prior spring, an antisymmetric pattern of rainfall?wind anomalies and the meridional SST gradient across the equator strengthen via increased wind?evaporation?sea surface temperature (WES) feedback. ENSO decays slightly faster in global warming. During the summer following El Niño decay, the resultant decrease in equatorial Pacific SST strengthens the SST contrast with the enhanced TIO warming, increasing the sea level pressure gradient and intensifying the anomalous anticyclone over the northwest Pacific. The easterly wind anomalies associated with the northwest Pacific anticyclone in turn sustain the SST warming over the north Indian Ocean and South China Sea. Thus, the increased TIO capacitor effect is due to enhanced air?sea interaction over the TIO and with the western Pacific. The implications for the observed intensification of the IOB mode and its capacitor effect after the 1970s are discussed.
    publisherAmerican Meteorological Society
    titleResponse of the Indian Ocean Basin Mode and Its Capacitor Effect to Global Warming
    typeJournal Paper
    journal volume24
    journal issue23
    journal titleJournal of Climate
    identifier doi10.1175/2011JCLI4169.1
    journal fristpage6146
    journal lastpage6164
    treeJournal of Climate:;2011:;volume( 024 ):;issue: 023
    contenttypeFulltext
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