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
Subjects:
BARE SOILS
CONTENIDO DE AGUA EN EL SUELO
ENERGY TRANSFER
EQUATIONS
LOAM SOILS
MASS TRANSFER
MATEMATICAS
MATHEMATICS
MATHEMATIQUE
SILTY SOILS
SOIL TEMPERATURE
SOIL WATER CONTENT
SOL LIMONEUX
SOL SABLOLIMONEUX
SUELO FRANCO
SUELO LIMOSO
TEMPERATURA DEL SUELO
TEMPERATURE DU SOL
TENEUR EN EAU DU SOL
TRANSFERENCIA DE MASA
TRANSFERT DE MASSE
TRANSPORT PROCESSES
VAPEUR D'EAU
VAPOR DE AGUA
WATER VAPOR MOVEMENT
WATER VAPOUR
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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