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    Climate Sensitivity of Moderate- and Low-Resolution Versions of CCSM3 to Preindustrial Forcings

    Source: Journal of Climate:;2006:;volume( 019 ):;issue: 011::page 2567
    Author:
    Otto-Bliesner, Bette L.
    ,
    Tomas, Robert
    ,
    Brady, Esther C.
    ,
    Ammann, Caspar
    ,
    Kothavala, Zav
    ,
    Clauzet, Gabriel
    DOI: 10.1175/JCLI3754.1
    Publisher: American Meteorological Society
    Abstract: Preindustrial (PI) simulations of the Community Climate System Model version 3 (CCSM3) at two resolutions, a moderate and a low resolution, are described and compared to the standard controls for present-day (PD) simulations. Because of computational efficiency, the moderate- and low-resolution versions of CCSM3 may be appropriate for climate change studies requiring simulations of the order of hundreds to thousands of years. The PI simulations provide the basis for comparison for proxy records that represent average late Holocene conditions. When forced with PI trace gases, aerosols, and solar irradiance estimates, both resolutions have a global cooling of 1.2°?1.3°C, increased sea ice in both hemispheres, and less precipitation near the equator and at midlatitudes as compared to simulations using PD forcing. The response to PI forcings differs in the two resolutions for North Atlantic meridional overturning circulation (MOC), the Antarctic Circumpolar Current (ACC), and ENSO. The moderate-resolution CCSM3 has enhanced ACC, North Atlantic MOC, and tropical Pacific ENSO variability for PI forcings as compared to PD. The low-resolution CCSM3 with more extensive sea ice and colder climate at high northern latitudes in the PD simulation shows less sensitivity of the North Atlantic MOC to PI forcing. ENSO variability and the strength of the ACC do not increase with PI forcing in the low-resolution CCSM3.
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      Climate Sensitivity of Moderate- and Low-Resolution Versions of CCSM3 to Preindustrial Forcings

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    contributor authorOtto-Bliesner, Bette L.
    contributor authorTomas, Robert
    contributor authorBrady, Esther C.
    contributor authorAmmann, Caspar
    contributor authorKothavala, Zav
    contributor authorClauzet, Gabriel
    date accessioned2017-06-09T17:01:54Z
    date available2017-06-09T17:01:54Z
    date copyright2006/06/01
    date issued2006
    identifier issn0894-8755
    identifier otherams-78222.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4220868
    description abstractPreindustrial (PI) simulations of the Community Climate System Model version 3 (CCSM3) at two resolutions, a moderate and a low resolution, are described and compared to the standard controls for present-day (PD) simulations. Because of computational efficiency, the moderate- and low-resolution versions of CCSM3 may be appropriate for climate change studies requiring simulations of the order of hundreds to thousands of years. The PI simulations provide the basis for comparison for proxy records that represent average late Holocene conditions. When forced with PI trace gases, aerosols, and solar irradiance estimates, both resolutions have a global cooling of 1.2°?1.3°C, increased sea ice in both hemispheres, and less precipitation near the equator and at midlatitudes as compared to simulations using PD forcing. The response to PI forcings differs in the two resolutions for North Atlantic meridional overturning circulation (MOC), the Antarctic Circumpolar Current (ACC), and ENSO. The moderate-resolution CCSM3 has enhanced ACC, North Atlantic MOC, and tropical Pacific ENSO variability for PI forcings as compared to PD. The low-resolution CCSM3 with more extensive sea ice and colder climate at high northern latitudes in the PD simulation shows less sensitivity of the North Atlantic MOC to PI forcing. ENSO variability and the strength of the ACC do not increase with PI forcing in the low-resolution CCSM3.
    publisherAmerican Meteorological Society
    titleClimate Sensitivity of Moderate- and Low-Resolution Versions of CCSM3 to Preindustrial Forcings
    typeJournal Paper
    journal volume19
    journal issue11
    journal titleJournal of Climate
    identifier doi10.1175/JCLI3754.1
    journal fristpage2567
    journal lastpage2583
    treeJournal of Climate:;2006:;volume( 019 ):;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
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