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On water vapor transport in field soils

Measurements of soil volumetric moisture content and temperature were made at 2, 4, 7, 10, and 15 cm below the surface of a bare field soil, over a 1-week period at 20-min intervals. The conductive heat and liquid moisture fluxes were calculated for the soil layer 7-10 cm below the surface, and the...

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Bibliographic Details
Published in:Water resources research 1998-04, Vol.34 (4), p.731-739
Main Authors: Cahill, A.T. (The Johns Hopkins University, Baltimore, MD.), Parlange, M.B
Format: Article
Language:English
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Summary:Measurements of soil volumetric moisture content and temperature were made at 2, 4, 7, 10, and 15 cm below the surface of a bare field soil, over a 1-week period at 20-min intervals. The conductive heat and liquid moisture fluxes were calculated for the soil layer 7-10 cm below the surface, and the water vapor flux was then determined from both the energy transfer and mass transfer equations. Water vapor flux in this layer transported a significant amount of the total energy flux (up to 50%) and an appreciable amount of the total moisture flux (up to 25%). There was reasonable agreement between the water vapor flux calculated by the mass transfer equation and the vapor flux calculated by the energy equation
ISSN:0043-1397
1944-7973
DOI:10.1029/97WR03756