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    Mean Dynamic Topography of the Ocean Derived from Satellite and Drifting Buoy Data Using Three Different Techniques

    Source: Journal of Atmospheric and Oceanic Technology:;2009:;volume( 026 ):;issue: 009::page 1910
    Author:
    Maximenko, Nikolai
    ,
    Niiler, Peter
    ,
    Centurioni, Luca
    ,
    Rio, Marie-Helene
    ,
    Melnichenko, Oleg
    ,
    Chambers, Don
    ,
    Zlotnicki, Victor
    ,
    Galperin, Boris
    DOI: 10.1175/2009JTECHO672.1
    Publisher: American Meteorological Society
    Abstract: Presented here are three mean dynamic topography maps derived with different methodologies. The first method combines sea level observed by the high-accuracy satellite radar altimetry with the geoid model of the Gravity Recovery and Climate Experiment (GRACE), which has recently measured the earth?s gravity with unprecedented spatial resolution and accuracy. The second one synthesizes near-surface velocities from a network of ocean drifters, hydrographic profiles, and ocean winds sorted according to the horizontal scales. In the third method, these global datasets are used in the context of the ocean surface momentum balance. The second and third methods are used to improve accuracy of the dynamic topography on fine space scales poorly resolved in the first method. When they are used to compute a multiyear time-mean global ocean surface circulation on a 0.5° horizontal resolution, both contain very similar, new small-scale midocean current patterns. In particular, extensions of western boundary currents appear narrow and strong despite temporal variability and exhibit persistent meanders and multiple branching. Also, the locations of the velocity concentrations in the Antarctic Circumpolar Current become well defined. Ageostrophic velocities reveal convergent zones in each subtropical basin. These maps present a new context in which to view the continued ocean monitoring with in situ instruments and satellites.
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      Mean Dynamic Topography of the Ocean Derived from Satellite and Drifting Buoy Data Using Three Different Techniques

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4211080
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    • Journal of Atmospheric and Oceanic Technology

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    contributor authorMaximenko, Nikolai
    contributor authorNiiler, Peter
    contributor authorCenturioni, Luca
    contributor authorRio, Marie-Helene
    contributor authorMelnichenko, Oleg
    contributor authorChambers, Don
    contributor authorZlotnicki, Victor
    contributor authorGalperin, Boris
    date accessioned2017-06-09T16:31:34Z
    date available2017-06-09T16:31:34Z
    date copyright2009/09/01
    date issued2009
    identifier issn0739-0572
    identifier otherams-69413.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4211080
    description abstractPresented here are three mean dynamic topography maps derived with different methodologies. The first method combines sea level observed by the high-accuracy satellite radar altimetry with the geoid model of the Gravity Recovery and Climate Experiment (GRACE), which has recently measured the earth?s gravity with unprecedented spatial resolution and accuracy. The second one synthesizes near-surface velocities from a network of ocean drifters, hydrographic profiles, and ocean winds sorted according to the horizontal scales. In the third method, these global datasets are used in the context of the ocean surface momentum balance. The second and third methods are used to improve accuracy of the dynamic topography on fine space scales poorly resolved in the first method. When they are used to compute a multiyear time-mean global ocean surface circulation on a 0.5° horizontal resolution, both contain very similar, new small-scale midocean current patterns. In particular, extensions of western boundary currents appear narrow and strong despite temporal variability and exhibit persistent meanders and multiple branching. Also, the locations of the velocity concentrations in the Antarctic Circumpolar Current become well defined. Ageostrophic velocities reveal convergent zones in each subtropical basin. These maps present a new context in which to view the continued ocean monitoring with in situ instruments and satellites.
    publisherAmerican Meteorological Society
    titleMean Dynamic Topography of the Ocean Derived from Satellite and Drifting Buoy Data Using Three Different Techniques
    typeJournal Paper
    journal volume26
    journal issue9
    journal titleJournal of Atmospheric and Oceanic Technology
    identifier doi10.1175/2009JTECHO672.1
    journal fristpage1910
    journal lastpage1919
    treeJournal of Atmospheric and Oceanic Technology:;2009:;volume( 026 ):;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
    yabeshDSpacePersian