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    Comparison of Eight Detection Algorithms for the Quantification and Characterization of Mesoscale Eddies in the South China Sea

    Source: Journal of Atmospheric and Oceanic Technology:;2019:;volume 036:;issue 007::page 1361
    Author:
    Lian, Zhan
    ,
    Sun, Baonan
    ,
    Wei, Zexun
    ,
    Wang, Yonggang
    ,
    Wang, Xinyi
    DOI: 10.1175/JTECH-D-18-0201.1
    Publisher: American Meteorological Society
    Abstract: AbstractNumerous oceanic mesoscale eddies occur in the South China Sea (SCS). The present study employs eight automatic eddy detection algorithms to identify these mesoscale eddies and compares the results. Eddy probabilities and areas detected by various algorithms differ substantially. Most regions of the SCS with a high discrepancy of eddy probabilities are those with few mesoscale eddies, except for the area west of the Luzon Strait, the area west of Luzon Island between 12° and 17°N, and the southernmost end of the SCS basin. They are primarily caused by strong interference, noncircular eddy shapes, and gentle sea level anomaly (SLA) gradients, respectively. The SLA, winding angle, and hybrid methods can easily detect the mesoscale eddies with wavelike features. The Okubo?Weiss (OW) and the spatially smoothed OW methods better identify grouping phenomena of mesoscale eddies in the SCS. Suggestions are presented on choosing suitable algorithms for studying mesoscale eddies in the SCS. No single algorithm is perfect for all research purposes. For different studies, the most suitable algorithm is different.
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      Comparison of Eight Detection Algorithms for the Quantification and Characterization of Mesoscale Eddies in the South China Sea

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4263391
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    contributor authorLian, Zhan
    contributor authorSun, Baonan
    contributor authorWei, Zexun
    contributor authorWang, Yonggang
    contributor authorWang, Xinyi
    date accessioned2019-10-05T06:46:46Z
    date available2019-10-05T06:46:46Z
    date copyright5/14/2019 12:00:00 AM
    date issued2019
    identifier otherJTECH-D-18-0201.1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4263391
    description abstractAbstractNumerous oceanic mesoscale eddies occur in the South China Sea (SCS). The present study employs eight automatic eddy detection algorithms to identify these mesoscale eddies and compares the results. Eddy probabilities and areas detected by various algorithms differ substantially. Most regions of the SCS with a high discrepancy of eddy probabilities are those with few mesoscale eddies, except for the area west of the Luzon Strait, the area west of Luzon Island between 12° and 17°N, and the southernmost end of the SCS basin. They are primarily caused by strong interference, noncircular eddy shapes, and gentle sea level anomaly (SLA) gradients, respectively. The SLA, winding angle, and hybrid methods can easily detect the mesoscale eddies with wavelike features. The Okubo?Weiss (OW) and the spatially smoothed OW methods better identify grouping phenomena of mesoscale eddies in the SCS. Suggestions are presented on choosing suitable algorithms for studying mesoscale eddies in the SCS. No single algorithm is perfect for all research purposes. For different studies, the most suitable algorithm is different.
    publisherAmerican Meteorological Society
    titleComparison of Eight Detection Algorithms for the Quantification and Characterization of Mesoscale Eddies in the South China Sea
    typeJournal Paper
    journal volume36
    journal issue7
    journal titleJournal of Atmospheric and Oceanic Technology
    identifier doi10.1175/JTECH-D-18-0201.1
    journal fristpage1361
    journal lastpage1380
    treeJournal of Atmospheric and Oceanic Technology:;2019:;volume 036:;issue 007
    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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