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    Effect of Missing Data on Estimates of Near-Surface Temperature Change since 1900

    Source: Journal of Climate:;2001:;volume( 014 ):;issue: 013::page 2809
    Author:
    Duffy, P. B.
    ,
    Doutriaux, C.
    ,
    Santer, B. D.
    ,
    Fodor, I. K.
    DOI: 10.1175/1520-0442(2001)014<2809:EOMDOE>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: It has been suggested that the apparent warming of the earth's surface during the twentieth century may be biased by large changes in the coverage of surface temperature measurements since 1900. This issue is investigated using climate model simulations. By imposing observed coverage changes on simulated surface temperatures, estimates are obtained of twentieth-century temperature change for both full global coverage and for actual historical coverage. In 10 out of 16 simulations including human climate perturbations, the temperature change from the globally complete model output is significantly larger than that derived from the historically masked model output. The remaining six simulations show no significant difference between complete and masked model output. Thus, these results do not support the hypothesis that the increase in the earth's surface temperature has been overestimated because of incomplete observational data. Rather, if the simulations analyzed are realistic, the true temperature increase over the last century is slightly larger than that estimated from available observations. Eight simulations of natural internal climate variability, which omit human climate perturbations, were analyzed. In none of these simulations does the temperature change during 100 yr?whether obtained from globally complete or masked model output?come close to the observed twentieth-century temperature increase.
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      Effect of Missing Data on Estimates of Near-Surface Temperature Change since 1900

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4198678
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    contributor authorDuffy, P. B.
    contributor authorDoutriaux, C.
    contributor authorSanter, B. D.
    contributor authorFodor, I. K.
    date accessioned2017-06-09T15:59:26Z
    date available2017-06-09T15:59:26Z
    date copyright2001/07/01
    date issued2001
    identifier issn0894-8755
    identifier otherams-5825.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4198678
    description abstractIt has been suggested that the apparent warming of the earth's surface during the twentieth century may be biased by large changes in the coverage of surface temperature measurements since 1900. This issue is investigated using climate model simulations. By imposing observed coverage changes on simulated surface temperatures, estimates are obtained of twentieth-century temperature change for both full global coverage and for actual historical coverage. In 10 out of 16 simulations including human climate perturbations, the temperature change from the globally complete model output is significantly larger than that derived from the historically masked model output. The remaining six simulations show no significant difference between complete and masked model output. Thus, these results do not support the hypothesis that the increase in the earth's surface temperature has been overestimated because of incomplete observational data. Rather, if the simulations analyzed are realistic, the true temperature increase over the last century is slightly larger than that estimated from available observations. Eight simulations of natural internal climate variability, which omit human climate perturbations, were analyzed. In none of these simulations does the temperature change during 100 yr?whether obtained from globally complete or masked model output?come close to the observed twentieth-century temperature increase.
    publisherAmerican Meteorological Society
    titleEffect of Missing Data on Estimates of Near-Surface Temperature Change since 1900
    typeJournal Paper
    journal volume14
    journal issue13
    journal titleJournal of Climate
    identifier doi10.1175/1520-0442(2001)014<2809:EOMDOE>2.0.CO;2
    journal fristpage2809
    journal lastpage2814
    treeJournal of Climate:;2001:;volume( 014 ):;issue: 013
    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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