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    Water Vapor Exchange between Soil and Atmosphere over a Gobi Surface near an Oasis in the Summer

    Source: Journal of Applied Meteorology:;2004:;volume( 043 ):;issue: 012::page 1917
    Author:
    Zhang, Qiang
    ,
    Huang, Ronghui
    DOI: 10.1175/JAM2171.1
    Publisher: American Meteorological Society
    Abstract: Using data observed at Dunhuang, in the Gansu, in the arid region of northwest China in the summer, the characteristics of the soil water content, temperature, and atmospheric humidity were analyzed. It was found that the depth of the active soil temperature layer is about 5 cm, which is much thinner than that of typical soils. In addition, not only is the atmospheric humidity gradient in the surface layer often inverted, but so too is the soil water content gradient in the shallow layer. The diurnal variation of soil water content can be divided into four stages, including wet, water loss, dry, and water gain. It is shown that in soil water content profiles the depth of the active soil layer is about 10 cm, and soil water content inversion is the primary feature in the shallow layer during the ?wet? stage. The presence of soil water content inversion indicates that soil in the shallow layer can absorb water from the air through condensation in the nighttime and emit water vapor to the air through evaporation in the daytime. The formation of a soil water content inversion is mainly related to the state of the soil surface temperature.
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      Water Vapor Exchange between Soil and Atmosphere over a Gobi Surface near an Oasis in the Summer

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4216296
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    contributor authorZhang, Qiang
    contributor authorHuang, Ronghui
    date accessioned2017-06-09T16:47:22Z
    date available2017-06-09T16:47:22Z
    date copyright2004/12/01
    date issued2004
    identifier issn0894-8763
    identifier otherams-74107.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4216296
    description abstractUsing data observed at Dunhuang, in the Gansu, in the arid region of northwest China in the summer, the characteristics of the soil water content, temperature, and atmospheric humidity were analyzed. It was found that the depth of the active soil temperature layer is about 5 cm, which is much thinner than that of typical soils. In addition, not only is the atmospheric humidity gradient in the surface layer often inverted, but so too is the soil water content gradient in the shallow layer. The diurnal variation of soil water content can be divided into four stages, including wet, water loss, dry, and water gain. It is shown that in soil water content profiles the depth of the active soil layer is about 10 cm, and soil water content inversion is the primary feature in the shallow layer during the ?wet? stage. The presence of soil water content inversion indicates that soil in the shallow layer can absorb water from the air through condensation in the nighttime and emit water vapor to the air through evaporation in the daytime. The formation of a soil water content inversion is mainly related to the state of the soil surface temperature.
    publisherAmerican Meteorological Society
    titleWater Vapor Exchange between Soil and Atmosphere over a Gobi Surface near an Oasis in the Summer
    typeJournal Paper
    journal volume43
    journal issue12
    journal titleJournal of Applied Meteorology
    identifier doi10.1175/JAM2171.1
    journal fristpage1917
    journal lastpage1928
    treeJournal of Applied Meteorology:;2004:;volume( 043 ):;issue: 012
    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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