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    Quasi-Fixed Points and Periodic Orbits in the Zebiak—Cane ENSO Model with Applications in Kalman Filtering. Part I: Monthly Quasi-Fixed Points

    Source: Monthly Weather Review:;1995:;volume( 123 ):;issue: 009::page 2802
    Author:
    Bürger, Gerd
    ,
    Zebiak, Stephen E.
    ,
    Cane, Mark A.
    DOI: 10.1175/1520-0493(1995)123<2802:QFPAPO>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: In an effort to apply the interactive Kalman filter to higher-dimensional systems, the concept of a quasi-fixed point is introduced. This is defined to be a system state where the tendency, in a suitable reduced space, is at a minimum. It allows one to use conventional search algorithms for the detection of quasi-fixed points. In Part I quasi-fixed points of the ENSO model of Zebiak and Cane are found when run in a permanent monthly mode, the reduced space being defined via a multiple EOP projection. The stability characteristics of the quasi-fixed points are analyzed, and it is shown that they are significantly different from the (in)stabilities of the average monthly models. With these quasi-fixed points, assimilation experiments are carried out with the interactive Kalman filter for the Zebiak?Cane model in the reduced space. It is demonstrated that the results are superior to both a seasonal Kalman filter and the extended Kalman filter.
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      Quasi-Fixed Points and Periodic Orbits in the Zebiak—Cane ENSO Model with Applications in Kalman Filtering. Part I: Monthly Quasi-Fixed Points

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4203506
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    contributor authorBürger, Gerd
    contributor authorZebiak, Stephen E.
    contributor authorCane, Mark A.
    date accessioned2017-06-09T16:10:28Z
    date available2017-06-09T16:10:28Z
    date copyright1995/09/01
    date issued1995
    identifier issn0027-0644
    identifier otherams-62597.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4203506
    description abstractIn an effort to apply the interactive Kalman filter to higher-dimensional systems, the concept of a quasi-fixed point is introduced. This is defined to be a system state where the tendency, in a suitable reduced space, is at a minimum. It allows one to use conventional search algorithms for the detection of quasi-fixed points. In Part I quasi-fixed points of the ENSO model of Zebiak and Cane are found when run in a permanent monthly mode, the reduced space being defined via a multiple EOP projection. The stability characteristics of the quasi-fixed points are analyzed, and it is shown that they are significantly different from the (in)stabilities of the average monthly models. With these quasi-fixed points, assimilation experiments are carried out with the interactive Kalman filter for the Zebiak?Cane model in the reduced space. It is demonstrated that the results are superior to both a seasonal Kalman filter and the extended Kalman filter.
    publisherAmerican Meteorological Society
    titleQuasi-Fixed Points and Periodic Orbits in the Zebiak—Cane ENSO Model with Applications in Kalman Filtering. Part I: Monthly Quasi-Fixed Points
    typeJournal Paper
    journal volume123
    journal issue9
    journal titleMonthly Weather Review
    identifier doi10.1175/1520-0493(1995)123<2802:QFPAPO>2.0.CO;2
    journal fristpage2802
    journal lastpage2813
    treeMonthly Weather Review:;1995:;volume( 123 ):;issue: 009
    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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