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    Stochastic Simulation of Atmospheric Trajectories

    Source: Journal of Climate and Applied Meteorology:;1983:;volume( 022 ):;issue: 002::page 266
    Author:
    Small, Mitchell J.
    ,
    Samson, Perry J.
    DOI: 10.1175/1520-0450(1983)022<0266:SSOAT>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Methods are presented for generating an ensemble of synthetic atmospheric trajectories. These include methods for a set of independent trajectories, and methods for a correlated set of sequential trajectories. The models incorporate first-order autocorrelation of successive zonal and meridional displacement, and in the case of the sequential set, correlations between trajectories due to spatial patterns of air flow. The model for independent trajectories is applied and validated using three years (1976?78) of observed forward trajectories originating from southeast Michigan. The synthetic trajectories are statistically consistent with observed wind fields, and result in large-scale diffusion which is comparable to existing estimates. Limitations in the assumption of spatial homogeneity of wind statistics are explored using backward trajectories arriving at six locations in eastern North America during July 1978. The applications highlight the problems which may arise when observed trajectories are used in atmospheric transport modeling, and support the use of synthetic trajectories, at least in a complementary analysis, to obtain a more accurate long-term representation. The procedure for correlated trajectories is not implemented; however, it may prove useful for transport problems of shorter time scales where wind persistence is important.
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      Stochastic Simulation of Atmospheric Trajectories

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4145559
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    contributor authorSmall, Mitchell J.
    contributor authorSamson, Perry J.
    date accessioned2017-06-09T13:59:17Z
    date available2017-06-09T13:59:17Z
    date copyright1983/02/01
    date issued1983
    identifier issn0733-3021
    identifier otherams-10441.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4145559
    description abstractMethods are presented for generating an ensemble of synthetic atmospheric trajectories. These include methods for a set of independent trajectories, and methods for a correlated set of sequential trajectories. The models incorporate first-order autocorrelation of successive zonal and meridional displacement, and in the case of the sequential set, correlations between trajectories due to spatial patterns of air flow. The model for independent trajectories is applied and validated using three years (1976?78) of observed forward trajectories originating from southeast Michigan. The synthetic trajectories are statistically consistent with observed wind fields, and result in large-scale diffusion which is comparable to existing estimates. Limitations in the assumption of spatial homogeneity of wind statistics are explored using backward trajectories arriving at six locations in eastern North America during July 1978. The applications highlight the problems which may arise when observed trajectories are used in atmospheric transport modeling, and support the use of synthetic trajectories, at least in a complementary analysis, to obtain a more accurate long-term representation. The procedure for correlated trajectories is not implemented; however, it may prove useful for transport problems of shorter time scales where wind persistence is important.
    publisherAmerican Meteorological Society
    titleStochastic Simulation of Atmospheric Trajectories
    typeJournal Paper
    journal volume22
    journal issue2
    journal titleJournal of Climate and Applied Meteorology
    identifier doi10.1175/1520-0450(1983)022<0266:SSOAT>2.0.CO;2
    journal fristpage266
    journal lastpage277
    treeJournal of Climate and Applied Meteorology:;1983:;volume( 022 ):;issue: 002
    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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