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    On the formation mechanism of Seasonal Persistence Barrier

    Source: Journal of Climate:;2020:;volume( ):;issue: -::page 1
    Author:
    Jin, Yishuai;Liu, Zhengyu;He, Chengfei;Zhao, Yuchu
    DOI: 10.1175/JCLI-D-19-0502.1
    Publisher: American Meteorological Society
    Abstract: The mechanism of the seasonal persistence barrier (SPB) is studied in the framework of autoregressive (AR) model. In contrast to the seasonal variance, whose minimum is modulated mainly by the minimum growth rate or noise forcing, the SPB is caused primarily by the declining growth rate or increasing noise forcing, instead of the minimum/maximum of the growth rate or noise forcing. In other words, the SPB is caused by the declining signal-to-noise ratio (SNR) rather than the weakest SNR. In a weakly damped system, the phase of SPB is delayed from that of declining SNR by about a season. The mechanism is further applied to explain the observed SST variability in the tropical and North Pacific. For the tropical Pacific, the spring SPB could be caused by the decreasing growth rate from September to March and weak annual mean damping rate, instead of the minimum growth rate in spring. Over the North Pacific, the increasing noise forcing from March to June may lead to the summer SPB. Our mechanism provides a null hypothesis for understanding the SPB of climate variability.
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      On the formation mechanism of Seasonal Persistence Barrier

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4264143
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    contributor authorJin, Yishuai;Liu, Zhengyu;He, Chengfei;Zhao, Yuchu
    date accessioned2022-01-30T17:53:45Z
    date available2022-01-30T17:53:45Z
    date copyright10/23/2020 12:00:00 AM
    date issued2020
    identifier issn0894-8755
    identifier otherjclid190502.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4264143
    description abstractThe mechanism of the seasonal persistence barrier (SPB) is studied in the framework of autoregressive (AR) model. In contrast to the seasonal variance, whose minimum is modulated mainly by the minimum growth rate or noise forcing, the SPB is caused primarily by the declining growth rate or increasing noise forcing, instead of the minimum/maximum of the growth rate or noise forcing. In other words, the SPB is caused by the declining signal-to-noise ratio (SNR) rather than the weakest SNR. In a weakly damped system, the phase of SPB is delayed from that of declining SNR by about a season. The mechanism is further applied to explain the observed SST variability in the tropical and North Pacific. For the tropical Pacific, the spring SPB could be caused by the decreasing growth rate from September to March and weak annual mean damping rate, instead of the minimum growth rate in spring. Over the North Pacific, the increasing noise forcing from March to June may lead to the summer SPB. Our mechanism provides a null hypothesis for understanding the SPB of climate variability.
    publisherAmerican Meteorological Society
    titleOn the formation mechanism of Seasonal Persistence Barrier
    typeJournal Paper
    journal titleJournal of Climate
    identifier doi10.1175/JCLI-D-19-0502.1
    journal fristpage1
    journal lastpage38
    treeJournal of Climate:;2020:;volume( ):;issue: -
    contenttypeFulltext
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    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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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