YaBeSH Engineering and Technology Library

    • Journals
    • PaperQuest
    • YSE Standards
    • YaBeSH
    • Login
    View Item 
    •   YE&T Library
    • AMS
    • Journal of Physical Oceanography
    • View Item
    •   YE&T Library
    • AMS
    • Journal of Physical Oceanography
    • View Item
    • All Fields
    • Source Title
    • Year
    • Publisher
    • Title
    • Subject
    • Author
    • DOI
    • ISBN
    Advanced Search
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Archive

    Estimating Bolus Velocities from Data—How Large Must They Be?

    Source: Journal of Physical Oceanography:;2009:;Volume( 039 ):;issue: 001::page 70
    Author:
    Killworth, Peter D.
    DOI: 10.1175/2008JPO3905.1
    Publisher: American Meteorological Society
    Abstract: This paper examines the representation of eddy fluxes by bolus velocities. In particular, it asks the following: 1) Can an arbitrary eddy flux divergence of density be represented accurately by a nondivergent bolus flux that satisfies the condition of no normal flow at boundaries? 2) If not, how close can such a representation come? 3) If such a representation can exist in some circumstances, what is the size of the smallest bolus velocity that fits the data? The author finds, in agreement with earlier authors, that the answer to the first question is no, although under certain conditions, which include a modification to the eddy flux divergence, a bolus representation becomes possible. One such condition is when the eddy flux divergence is required to balance the time-mean flux divergence. The smallest bolus flow is easily found by solving a thickness-weighted Poisson equation on each density level. This problem is solved for the North Pacific using time-mean data from an eddy-permitting model. The minimum bolus flow is found to be very small at depth but larger than is usually assumed near the surface. The magnitude of this minimum flow is of order one-tenth of the mean flow. Similar but larger results are found for a coarse-resolution model.
    • Download: (3.669Mb)
    • Show Full MetaData Hide Full MetaData
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      Estimating Bolus Velocities from Data—How Large Must They Be?

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4208973
    Collections
    • Journal of Physical Oceanography

    Show full item record

    contributor authorKillworth, Peter D.
    date accessioned2017-06-09T16:25:11Z
    date available2017-06-09T16:25:11Z
    date copyright2009/01/01
    date issued2009
    identifier issn0022-3670
    identifier otherams-67517.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4208973
    description abstractThis paper examines the representation of eddy fluxes by bolus velocities. In particular, it asks the following: 1) Can an arbitrary eddy flux divergence of density be represented accurately by a nondivergent bolus flux that satisfies the condition of no normal flow at boundaries? 2) If not, how close can such a representation come? 3) If such a representation can exist in some circumstances, what is the size of the smallest bolus velocity that fits the data? The author finds, in agreement with earlier authors, that the answer to the first question is no, although under certain conditions, which include a modification to the eddy flux divergence, a bolus representation becomes possible. One such condition is when the eddy flux divergence is required to balance the time-mean flux divergence. The smallest bolus flow is easily found by solving a thickness-weighted Poisson equation on each density level. This problem is solved for the North Pacific using time-mean data from an eddy-permitting model. The minimum bolus flow is found to be very small at depth but larger than is usually assumed near the surface. The magnitude of this minimum flow is of order one-tenth of the mean flow. Similar but larger results are found for a coarse-resolution model.
    publisherAmerican Meteorological Society
    titleEstimating Bolus Velocities from Data—How Large Must They Be?
    typeJournal Paper
    journal volume39
    journal issue1
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/2008JPO3905.1
    journal fristpage70
    journal lastpage88
    treeJournal of Physical Oceanography:;2009:;Volume( 039 ):;issue: 001
    contenttypeFulltext
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian
     
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian