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    Spatial Distributions and Seasonal Variations of Tropospheric Water Vapor Content over the Tibetan Plateau

    Source: Journal of Climate:;2013:;volume( 026 ):;issue: 015::page 5637
    Author:
    Zhang, Yuwei
    ,
    Wang, Donghai
    ,
    Zhai, Panmao
    ,
    Gu, Guojun
    ,
    He, Jinhai
    DOI: 10.1175/JCLI-D-12-00574.1
    Publisher: American Meteorological Society
    Abstract: patial distributions and seasonal variations of tropospheric water vapor over the Tibetan Plateau and the surrounding areas are explored by means of water vapor products from the high-resolution Atmospheric Infrared Sounder (AIRS) on board the Aqua satellite and the NASA Water Vapor Project (NVAP). Because NVAP has a serious temporal inhomogeneity issue found in previous studies, the AIRS retrieval product is primarily applied here, though similar seasonal variations can be derived in both datasets. Intense horizontal gradients appear along the edges of the plateau in the lower-tropospheric (500?700 hPa) water vapor and columnar precipitable water, in particular over the regions along the southeastern boundary. Rich horizontal structures are also seen within the plateau, but with a weaker gradient. In the mid- to upper troposphere (300?500 hPa), horizontal gradients are relatively weak. It is shown that there is always a deep layer of high water vapor content over the plateau with a peak around 500 hPa, which can extend from the surface to roughly 300 hPa and even to 100 hPa at some locations. This layer of high water vapor content has consistent influence on precipitating processes in the downstream regions such as the valleys of the Yellow and Yangtze Rivers. Estimated vertically integrated water vapor flux and moisture divergence in the two layers (500?700 and 300?500 hPa) further confirm the effect of the Tibetan Plateau on the downstream regions. In particular, the mid- to upper-layer water vapor (300?500 hPa) tends to play an essential role during both the warm and cold seasons, confirmed by the spatial distribution of seasonal-mean precipitation.
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      Spatial Distributions and Seasonal Variations of Tropospheric Water Vapor Content over the Tibetan Plateau

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4222545
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    contributor authorZhang, Yuwei
    contributor authorWang, Donghai
    contributor authorZhai, Panmao
    contributor authorGu, Guojun
    contributor authorHe, Jinhai
    date accessioned2017-06-09T17:07:25Z
    date available2017-06-09T17:07:25Z
    date copyright2013/08/01
    date issued2013
    identifier issn0894-8755
    identifier otherams-79732.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4222545
    description abstractpatial distributions and seasonal variations of tropospheric water vapor over the Tibetan Plateau and the surrounding areas are explored by means of water vapor products from the high-resolution Atmospheric Infrared Sounder (AIRS) on board the Aqua satellite and the NASA Water Vapor Project (NVAP). Because NVAP has a serious temporal inhomogeneity issue found in previous studies, the AIRS retrieval product is primarily applied here, though similar seasonal variations can be derived in both datasets. Intense horizontal gradients appear along the edges of the plateau in the lower-tropospheric (500?700 hPa) water vapor and columnar precipitable water, in particular over the regions along the southeastern boundary. Rich horizontal structures are also seen within the plateau, but with a weaker gradient. In the mid- to upper troposphere (300?500 hPa), horizontal gradients are relatively weak. It is shown that there is always a deep layer of high water vapor content over the plateau with a peak around 500 hPa, which can extend from the surface to roughly 300 hPa and even to 100 hPa at some locations. This layer of high water vapor content has consistent influence on precipitating processes in the downstream regions such as the valleys of the Yellow and Yangtze Rivers. Estimated vertically integrated water vapor flux and moisture divergence in the two layers (500?700 and 300?500 hPa) further confirm the effect of the Tibetan Plateau on the downstream regions. In particular, the mid- to upper-layer water vapor (300?500 hPa) tends to play an essential role during both the warm and cold seasons, confirmed by the spatial distribution of seasonal-mean precipitation.
    publisherAmerican Meteorological Society
    titleSpatial Distributions and Seasonal Variations of Tropospheric Water Vapor Content over the Tibetan Plateau
    typeJournal Paper
    journal volume26
    journal issue15
    journal titleJournal of Climate
    identifier doi10.1175/JCLI-D-12-00574.1
    journal fristpage5637
    journal lastpage5654
    treeJournal of Climate:;2013:;volume( 026 ):;issue: 015
    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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