HR: 0800h
AN: H21B-1341    [Abstracts]
TI: A Soil Thermal Conductivity Model Based upon Component Conductivities and Fractions for use in Soil-Vegetation-Atmosphere Transfer Models
AU: * Gu, H
EM: guh@umich.edu
AF: University of Michigan, Microwave Geophysics Group, Department of Atmospheric, Oceanic and Space Sciences, 2455 Hayward St., Ann Arbor, MI 48109-2143 United States
AU: Lin, T
EM: alannlin@ufl.edu
AF: University of Florida, Center for Remote Sensing, Agricultural and Biological Engineering Department, Frazier Rogers Hall, P.O.Box 110570, Gainesville, FL 32611-0570 United States
AU: Judge, J
EM: jasmeet@ufl.edu
AF: University of Florida, Center for Remote Sensing, Agricultural and Biological Engineering Department, Frazier Rogers Hall, P.O.Box 110570, Gainesville, FL 32611-0570 United States
AU: England, A W
EM: england@umich.edu
AF: University of Michigan, Microwave Geophysics Group, Department of Atmospheric, Oceanic and Space Sciences, 2455 Hayward St., Ann Arbor, MI 48109-2143 United States
AB: A soil Thermal Conductivity (TC) model is proposed based upon De Vries' soil thermal conductivity theory, but with fewer degrees of freedom. The model is designed for water contents between the soil wilting point and soil saturation - a relevant range for many applications. The TC model uses component thermal conductivities and a component-dependent assignment of shape factors to obtain thermal conductivity estimates whose only degrees of freedom are fractions of sand, clay, and liquid water. TC model predictions show good agreement with thermal conductivity measurements. Performances of our Land Surface Process (LSP) model during 30-day dry down simulations were negligibly affected by substitution of the TC model for the original De Vries model.
DE: 1218 Mass balance (0762, 1223, 1631, 1836, 1843, 3010, 3322, 4532)
DE: 1631 Land/atmosphere interactions (1218, 1843, 3322)
DE: 1840 Hydrometeorology
DE: 1843 Land/atmosphere interactions (1218, 1631, 3322)
DE: 3322 Land/atmosphere interactions (1218, 1631, 1843)
SC: Hydrology [H]
MN: Fall Meeting 2005