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    Last Glacial Maximum East Asian Monsoon: Results of PMIP Simulations

    Source: Journal of Climate:;2010:;volume( 023 ):;issue: 018::page 5030
    Author:
    Jiang, Dabang
    ,
    Lang, Xianmei
    DOI: 10.1175/2010JCLI3526.1
    Publisher: American Meteorological Society
    Abstract: During glacial periods, the East Asian monsoon is typically thought to have been stronger in boreal winters and weaker in boreal summers. It is unclear, however, whether this view is true at larger scales and to what extent the East Asian monsoon responds to glacial conditions as a whole. Using all experiments conducted as part of the Paleoclimate Modeling Intercomparison Project (PMIP), this paper examines East Asian monsoon climatology during the Last Glacial Maximum (LGM), around 21 000 calendar years ago. In contrast to conclusions drawn from sparse proxy data, the intensity of the East Asian winter (December?February) monsoon (EAWM) during the LGM, as measured by regionally averaged meridional wind speed at 850 hPa, was found to vary both in sign and magnitude, with reference to baseline climate, across the PMIP simulations. It strengthened in 10 out of the 21 models but weakened in the remaining 11 models, with an average weakening of 4% for the 21-model ensemble mean (15% for the ensemble mean of the 14 models with computed sea surface temperatures). At the subregional scale, the LGM EAWM strengthened north of about 30°N but weakened south of this region in East Asia, which can be explained by changes in surface temperature. On the other hand, all of the 14 models chosen in this study consistently simulated a weaker than baseline East Asian summer (June?August) monsoon during the LGM, with an average weakening of 25%.
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      Last Glacial Maximum East Asian Monsoon: Results of PMIP Simulations

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    contributor authorJiang, Dabang
    contributor authorLang, Xianmei
    date accessioned2017-06-09T16:35:28Z
    date available2017-06-09T16:35:28Z
    date copyright2010/09/01
    date issued2010
    identifier issn0894-8755
    identifier otherams-70549.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4212342
    description abstractDuring glacial periods, the East Asian monsoon is typically thought to have been stronger in boreal winters and weaker in boreal summers. It is unclear, however, whether this view is true at larger scales and to what extent the East Asian monsoon responds to glacial conditions as a whole. Using all experiments conducted as part of the Paleoclimate Modeling Intercomparison Project (PMIP), this paper examines East Asian monsoon climatology during the Last Glacial Maximum (LGM), around 21 000 calendar years ago. In contrast to conclusions drawn from sparse proxy data, the intensity of the East Asian winter (December?February) monsoon (EAWM) during the LGM, as measured by regionally averaged meridional wind speed at 850 hPa, was found to vary both in sign and magnitude, with reference to baseline climate, across the PMIP simulations. It strengthened in 10 out of the 21 models but weakened in the remaining 11 models, with an average weakening of 4% for the 21-model ensemble mean (15% for the ensemble mean of the 14 models with computed sea surface temperatures). At the subregional scale, the LGM EAWM strengthened north of about 30°N but weakened south of this region in East Asia, which can be explained by changes in surface temperature. On the other hand, all of the 14 models chosen in this study consistently simulated a weaker than baseline East Asian summer (June?August) monsoon during the LGM, with an average weakening of 25%.
    publisherAmerican Meteorological Society
    titleLast Glacial Maximum East Asian Monsoon: Results of PMIP Simulations
    typeJournal Paper
    journal volume23
    journal issue18
    journal titleJournal of Climate
    identifier doi10.1175/2010JCLI3526.1
    journal fristpage5030
    journal lastpage5038
    treeJournal of Climate:;2010:;volume( 023 ):;issue: 018
    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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