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    Generalized Adjoint for Physical Processes with Parameterized Discontinuities. Part V: Coarse-Grain Adjoint and Problems in Gradient Check

    Source: Journal of the Atmospheric Sciences:;1998:;Volume( 055 ):;issue: 011::page 2130
    Author:
    Xu, Qin
    ,
    Gao, Jidong
    ,
    Gu, Wei
    DOI: 10.1175/1520-0469(1998)055<2130:GAFPPW>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: When on/off switches are triggered at discrete time levels by a threshold condition in a traditionally discretized model, the model solution is not continuously dependent on the initial state and this causes problems in tangent linearization and adjoint computations. It is shown in this paper that the problems can be avoided by introducing coarse-grain tangent linearization and adjoint without modifying the traditional discretization, although the coarse-grain gradient check can be performed only for finite perturbations.
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      Generalized Adjoint for Physical Processes with Parameterized Discontinuities. Part V: Coarse-Grain Adjoint and Problems in Gradient Check

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4158634
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    • Journal of the Atmospheric Sciences

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    contributor authorXu, Qin
    contributor authorGao, Jidong
    contributor authorGu, Wei
    date accessioned2017-06-09T14:35:07Z
    date available2017-06-09T14:35:07Z
    date copyright1998/06/01
    date issued1998
    identifier issn0022-4928
    identifier otherams-22209.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4158634
    description abstractWhen on/off switches are triggered at discrete time levels by a threshold condition in a traditionally discretized model, the model solution is not continuously dependent on the initial state and this causes problems in tangent linearization and adjoint computations. It is shown in this paper that the problems can be avoided by introducing coarse-grain tangent linearization and adjoint without modifying the traditional discretization, although the coarse-grain gradient check can be performed only for finite perturbations.
    publisherAmerican Meteorological Society
    titleGeneralized Adjoint for Physical Processes with Parameterized Discontinuities. Part V: Coarse-Grain Adjoint and Problems in Gradient Check
    typeJournal Paper
    journal volume55
    journal issue11
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/1520-0469(1998)055<2130:GAFPPW>2.0.CO;2
    journal fristpage2130
    journal lastpage2135
    treeJournal of the Atmospheric Sciences:;1998:;Volume( 055 ):;issue: 011
    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