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    Interdecadal Seesaw of Precipitation Variability between North China and the Southwest United States

    Source: Journal of Climate:;2019:;volume 032:;issue 010::page 2951
    Author:
    Yang, Qing
    ,
    Ma, Zhuguo
    ,
    Wu, Peili
    ,
    Klingaman, Nicholas P.
    ,
    Zhang, Lixia
    DOI: 10.1175/JCLI-D-18-0082.1
    Publisher: American Meteorological Society
    Abstract: AbstractThis paper reports a consistent seesaw relationship between interdecadal precipitation variability over North China and the Southwest United States, which can be found in observations and simulations with several models. Idealized model simulations suggest the seesaw could be mainly driven by the interdecadal Pacific oscillation (IPO), through a large-scale circulation anomaly occupying the entire northern North Pacific, while the Atlantic multidecadal oscillation (AMO) contributes oppositely and less. Modulation of precipitation by the IPO tends to be intensified when the AMO is in the opposite phase, but weakened when the AMO is in the same phase. The warm IPO phase is associated with an anomalous cyclone over the northern North Pacific; consequently, anomalous southwesterly winds bring more moisture and rainfall to the Southwest United States, while northwesterly wind anomalies prevail over North China with negative rainfall anomalies. The east?west seesaw of rainfall anomalies reverses sign when the circulation anomaly becomes anticyclonic during the cold IPO phase. The IPO-related tropical SST anomalies affect the meridional temperature gradient over the North Pacific and adjacent regions and the mean meridional circulation. In the northern North Pacific, the atmospheric response to IPO forcing imposes an equivalent barotropic structure throughout the troposphere. An important implication from this study is the potential predictability of drought-related water stresses over these arid and semiarid regions, with the progress of our understanding and prediction of the IPO and AMO.
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      Interdecadal Seesaw of Precipitation Variability between North China and the Southwest United States

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    contributor authorYang, Qing
    contributor authorMa, Zhuguo
    contributor authorWu, Peili
    contributor authorKlingaman, Nicholas P.
    contributor authorZhang, Lixia
    date accessioned2019-10-05T06:40:01Z
    date available2019-10-05T06:40:01Z
    date copyright3/8/2019 12:00:00 AM
    date issued2019
    identifier otherJCLI-D-18-0082.1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4263035
    description abstractAbstractThis paper reports a consistent seesaw relationship between interdecadal precipitation variability over North China and the Southwest United States, which can be found in observations and simulations with several models. Idealized model simulations suggest the seesaw could be mainly driven by the interdecadal Pacific oscillation (IPO), through a large-scale circulation anomaly occupying the entire northern North Pacific, while the Atlantic multidecadal oscillation (AMO) contributes oppositely and less. Modulation of precipitation by the IPO tends to be intensified when the AMO is in the opposite phase, but weakened when the AMO is in the same phase. The warm IPO phase is associated with an anomalous cyclone over the northern North Pacific; consequently, anomalous southwesterly winds bring more moisture and rainfall to the Southwest United States, while northwesterly wind anomalies prevail over North China with negative rainfall anomalies. The east?west seesaw of rainfall anomalies reverses sign when the circulation anomaly becomes anticyclonic during the cold IPO phase. The IPO-related tropical SST anomalies affect the meridional temperature gradient over the North Pacific and adjacent regions and the mean meridional circulation. In the northern North Pacific, the atmospheric response to IPO forcing imposes an equivalent barotropic structure throughout the troposphere. An important implication from this study is the potential predictability of drought-related water stresses over these arid and semiarid regions, with the progress of our understanding and prediction of the IPO and AMO.
    publisherAmerican Meteorological Society
    titleInterdecadal Seesaw of Precipitation Variability between North China and the Southwest United States
    typeJournal Paper
    journal volume32
    journal issue10
    journal titleJournal of Climate
    identifier doi10.1175/JCLI-D-18-0082.1
    journal fristpage2951
    journal lastpage2968
    treeJournal of Climate:;2019:;volume 032:;issue 010
    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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