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    Directional Correlation Coefficient for Channeled Flow and Application to Wind Data over Complex Terrain

    Source: Journal of Atmospheric and Oceanic Technology:;1998:;volume( 015 ):;issue: 001::page 89
    Author:
    Kaufmann, Pirmin
    ,
    Weber, Rudolf O.
    DOI: 10.1175/1520-0426(1998)015<0089:DCCFCF>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Analysis of vector quantities or directional data, such as the variables characterizing flow, is of significant interest to geophysical fluid dynamicists. For flows with strong channeling, a new simple correlation coefficient is defined. It is demonstrated by application to a model of channeled flow that the new correlation captures the flow features in the case of channeling better than other correlations taken from the literature. The new correlation coefficient is applied to wind data from a mesoscale network of anemometers in complex terrain. A cluster analysis based on the correlation matrix is used to group observation sites into classes with similar behavior of the channeled flow. Sites within the same class are not necessarily geographically close. A similar behavior of the wind directions indicated by these classes seems to be more closely related to the orographic features and to the altitude of the sites than to the horizontal distance between them.
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      Directional Correlation Coefficient for Channeled Flow and Application to Wind Data over Complex Terrain

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4149045
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    contributor authorKaufmann, Pirmin
    contributor authorWeber, Rudolf O.
    date accessioned2017-06-09T14:09:47Z
    date available2017-06-09T14:09:47Z
    date copyright1998/02/01
    date issued1998
    identifier issn0739-0572
    identifier otherams-1358.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4149045
    description abstractAnalysis of vector quantities or directional data, such as the variables characterizing flow, is of significant interest to geophysical fluid dynamicists. For flows with strong channeling, a new simple correlation coefficient is defined. It is demonstrated by application to a model of channeled flow that the new correlation captures the flow features in the case of channeling better than other correlations taken from the literature. The new correlation coefficient is applied to wind data from a mesoscale network of anemometers in complex terrain. A cluster analysis based on the correlation matrix is used to group observation sites into classes with similar behavior of the channeled flow. Sites within the same class are not necessarily geographically close. A similar behavior of the wind directions indicated by these classes seems to be more closely related to the orographic features and to the altitude of the sites than to the horizontal distance between them.
    publisherAmerican Meteorological Society
    titleDirectional Correlation Coefficient for Channeled Flow and Application to Wind Data over Complex Terrain
    typeJournal Paper
    journal volume15
    journal issue1
    journal titleJournal of Atmospheric and Oceanic Technology
    identifier doi10.1175/1520-0426(1998)015<0089:DCCFCF>2.0.CO;2
    journal fristpage89
    journal lastpage97
    treeJournal of Atmospheric and Oceanic Technology:;1998:;volume( 015 ):;issue: 001
    contenttypeFulltext
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