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    Drought over East Asia: A Review

    Source: Journal of Climate:;2015:;volume( 028 ):;issue: 008::page 3375
    Author:
    Zhang, Lixia
    ,
    Zhou, Tianjun
    DOI: 10.1175/JCLI-D-14-00259.1
    Publisher: American Meteorological Society
    Abstract: ast Asia is greatly impacted by drought. North and southwest China are the regions with the highest drought frequency and maximum duration. At the interannual time scale, drought in the eastern part of East Asia is mainly dominated by two teleconnection patterns (i.e., the Pacific?Japan and Silk Road teleconnections). The former is forced by SST anomalies in the western North Pacific and the tropical Indian Ocean during El Niño decaying year summers. The precipitation anomaly features a meridional tripolar or sandwich pattern. The latter is forced by Indian monsoon heating and is a propagation of stationary Rossby waves along the Asian jet in the upper troposphere. It can significantly influence the precipitation over north China. Regarding the long-term trend, there exists an increasing drought trend over central parts of northern China and a decreasing tendency over northwestern China from the 1950s to the present. The increased drought in north China results from a weakened tendency of summer monsoons, which is mainly driven by the phase transition of the Pacific decadal oscillation. East Asian summer precipitation is poorly simulated and predicted by current state-of-the-art climate models. Encouragingly, the predictability of atmospheric circulation is high because of the forcing of ENSO and the associated teleconnection patterns. Under the SRES A1B scenario and doubled CO2 simulations, most climate models project an increasing drought frequency and intensity over southeastern Asia. Nevertheless, uncertainties exist in the projections as a result of the selection of climate models and the choice of drought index.
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      Drought over East Asia: A Review

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4223463
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    contributor authorZhang, Lixia
    contributor authorZhou, Tianjun
    date accessioned2017-06-09T17:10:26Z
    date available2017-06-09T17:10:26Z
    date copyright2015/04/01
    date issued2015
    identifier issn0894-8755
    identifier otherams-80558.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4223463
    description abstractast Asia is greatly impacted by drought. North and southwest China are the regions with the highest drought frequency and maximum duration. At the interannual time scale, drought in the eastern part of East Asia is mainly dominated by two teleconnection patterns (i.e., the Pacific?Japan and Silk Road teleconnections). The former is forced by SST anomalies in the western North Pacific and the tropical Indian Ocean during El Niño decaying year summers. The precipitation anomaly features a meridional tripolar or sandwich pattern. The latter is forced by Indian monsoon heating and is a propagation of stationary Rossby waves along the Asian jet in the upper troposphere. It can significantly influence the precipitation over north China. Regarding the long-term trend, there exists an increasing drought trend over central parts of northern China and a decreasing tendency over northwestern China from the 1950s to the present. The increased drought in north China results from a weakened tendency of summer monsoons, which is mainly driven by the phase transition of the Pacific decadal oscillation. East Asian summer precipitation is poorly simulated and predicted by current state-of-the-art climate models. Encouragingly, the predictability of atmospheric circulation is high because of the forcing of ENSO and the associated teleconnection patterns. Under the SRES A1B scenario and doubled CO2 simulations, most climate models project an increasing drought frequency and intensity over southeastern Asia. Nevertheless, uncertainties exist in the projections as a result of the selection of climate models and the choice of drought index.
    publisherAmerican Meteorological Society
    titleDrought over East Asia: A Review
    typeJournal Paper
    journal volume28
    journal issue8
    journal titleJournal of Climate
    identifier doi10.1175/JCLI-D-14-00259.1
    journal fristpage3375
    journal lastpage3399
    treeJournal of Climate:;2015:;volume( 028 ):;issue: 008
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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