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    On the Assessment of Nonlocal Climate Feedback. Part I: The Generalized Equilibrium Feedback Assessment

    Source: Journal of Climate:;2008:;volume( 021 ):;issue: 001::page 134
    Author:
    Liu, Zhengyu
    ,
    Wen, Na
    ,
    Liu, Yun
    DOI: 10.1175/2007JCLI1826.1
    Publisher: American Meteorological Society
    Abstract: A statistical method is developed to assess the full climate feedback of nonlocal climate feedbacks. The method is a multivariate generalization of the univariate equilibrium feedback assessment (EFA) method of Frankignoul et al. As a pilot study here, the generalized EFA (GEFA) is applied to the assessment of the feedback response of sea surface temperature (SST) on surface heat flux in a simple ocean?atmosphere model that includes atmospheric advection. It is shown that GEFA can capture major features of nonlocal climate feedback and sheds light on the dynamics of the atmospheric response, as long as the spatial resolution (or spatial degree of freedom) is not very high. Given a sample size, sampling error tends to increase significantly with the spatial resolution of the data. As a result, useful estimates of the feedback can only be obtained at sufficiently low resolution. The sampling error is also found to increase significantly with the spatial scale of the atmospheric forcing and, in turn, the SST variability. This implies the potential difficulty in distinguishing the nonlocal feedbacks arising from small-scale SST variability. These deficiencies call for further improvements on the assessment methods for nonlocal climate feedbacks.
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      On the Assessment of Nonlocal Climate Feedback. Part I: The Generalized Equilibrium Feedback Assessment

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4207047
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    contributor authorLiu, Zhengyu
    contributor authorWen, Na
    contributor authorLiu, Yun
    date accessioned2017-06-09T16:19:32Z
    date available2017-06-09T16:19:32Z
    date copyright2008/01/01
    date issued2008
    identifier issn0894-8755
    identifier otherams-65784.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4207047
    description abstractA statistical method is developed to assess the full climate feedback of nonlocal climate feedbacks. The method is a multivariate generalization of the univariate equilibrium feedback assessment (EFA) method of Frankignoul et al. As a pilot study here, the generalized EFA (GEFA) is applied to the assessment of the feedback response of sea surface temperature (SST) on surface heat flux in a simple ocean?atmosphere model that includes atmospheric advection. It is shown that GEFA can capture major features of nonlocal climate feedback and sheds light on the dynamics of the atmospheric response, as long as the spatial resolution (or spatial degree of freedom) is not very high. Given a sample size, sampling error tends to increase significantly with the spatial resolution of the data. As a result, useful estimates of the feedback can only be obtained at sufficiently low resolution. The sampling error is also found to increase significantly with the spatial scale of the atmospheric forcing and, in turn, the SST variability. This implies the potential difficulty in distinguishing the nonlocal feedbacks arising from small-scale SST variability. These deficiencies call for further improvements on the assessment methods for nonlocal climate feedbacks.
    publisherAmerican Meteorological Society
    titleOn the Assessment of Nonlocal Climate Feedback. Part I: The Generalized Equilibrium Feedback Assessment
    typeJournal Paper
    journal volume21
    journal issue1
    journal titleJournal of Climate
    identifier doi10.1175/2007JCLI1826.1
    journal fristpage134
    journal lastpage148
    treeJournal of Climate:;2008:;volume( 021 ):;issue: 001
    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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