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    The Impact of Air–Sea Interactions on the Simulation of Tropical Intraseasonal Variability

    Source: Journal of Climate:;2008:;volume( 021 ):;issue: 024::page 6616
    Author:
    Pegion, Kathy
    ,
    Kirtman, Ben P.
    DOI: 10.1175/2008JCLI2180.1
    Publisher: American Meteorological Society
    Abstract: The impact of coupled air?sea feedbacks on the simulation of tropical intraseasonal variability is investigated in this study using the National Centers for Environmental Prediction Climate Forecast System. The simulation of tropical intraseasonal variability in a freely coupled simulation is compared with two simulations of the atmospheric component of the model. In one experiment, the uncoupled model is forced with the daily sea surface temperature (SST) from the coupled run. In the other, the uncoupled model is forced with climatological SST from the coupled run. Results indicate that the overall intraseasonal variability of precipitation is reduced in the coupled simulation compared to the uncoupled simulation forced by daily SST. Additionally, air?sea coupling is responsible for differences in the simulation of the tropical intraseasonal oscillation between the coupled and uncoupled models, specifically in terms of organization and propagation in the western Pacific. The differences between the coupled and uncoupled simulations are due to the fact that the relationships between precipitation and SST and latent heat flux and SST are much stronger in the coupled model than in the uncoupled model. Additionally, these relationships are delayed by about 5 days in the uncoupled model compared to the coupled model. As demonstrated by the uncoupled simulation forced with climatological SST, some of the intraseasonal oscillation can be simulated by internal atmospheric dynamics. However, the intraseasonally varying SST appears to be important to the amplitude and propagation of the oscillation beyond the Maritime Continent.
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      The Impact of Air–Sea Interactions on the Simulation of Tropical Intraseasonal Variability

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4208449
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    contributor authorPegion, Kathy
    contributor authorKirtman, Ben P.
    date accessioned2017-06-09T16:23:35Z
    date available2017-06-09T16:23:35Z
    date copyright2008/12/01
    date issued2008
    identifier issn0894-8755
    identifier otherams-67045.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4208449
    description abstractThe impact of coupled air?sea feedbacks on the simulation of tropical intraseasonal variability is investigated in this study using the National Centers for Environmental Prediction Climate Forecast System. The simulation of tropical intraseasonal variability in a freely coupled simulation is compared with two simulations of the atmospheric component of the model. In one experiment, the uncoupled model is forced with the daily sea surface temperature (SST) from the coupled run. In the other, the uncoupled model is forced with climatological SST from the coupled run. Results indicate that the overall intraseasonal variability of precipitation is reduced in the coupled simulation compared to the uncoupled simulation forced by daily SST. Additionally, air?sea coupling is responsible for differences in the simulation of the tropical intraseasonal oscillation between the coupled and uncoupled models, specifically in terms of organization and propagation in the western Pacific. The differences between the coupled and uncoupled simulations are due to the fact that the relationships between precipitation and SST and latent heat flux and SST are much stronger in the coupled model than in the uncoupled model. Additionally, these relationships are delayed by about 5 days in the uncoupled model compared to the coupled model. As demonstrated by the uncoupled simulation forced with climatological SST, some of the intraseasonal oscillation can be simulated by internal atmospheric dynamics. However, the intraseasonally varying SST appears to be important to the amplitude and propagation of the oscillation beyond the Maritime Continent.
    publisherAmerican Meteorological Society
    titleThe Impact of Air–Sea Interactions on the Simulation of Tropical Intraseasonal Variability
    typeJournal Paper
    journal volume21
    journal issue24
    journal titleJournal of Climate
    identifier doi10.1175/2008JCLI2180.1
    journal fristpage6616
    journal lastpage6635
    treeJournal of Climate:;2008:;volume( 021 ):;issue: 024
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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