A simple method for the estimation of thermal inertia

Authors

  • J. Wang,

    1. Department of Civil and Environmental Engineering, University of California, Irvine, California, USA
    2. Formerly at R. M. Parsons Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
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  • R. L. Bras,

    1. Department of Civil and Environmental Engineering, University of California, Irvine, California, USA
    2. Formerly at R. M. Parsons Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
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  • G. Sivandran,

    1. R. M. Parsons Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
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  • R. G. Knox

    1. R. M. Parsons Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
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Abstract

[1] A simple method for estimating thermal inertia using daily amplitude of surface soil heat flux and temperature is proposed. Based on an analytical solution of the diffusion equation where the soil temperature is idealized as a sinusoidal function, the thermal inertia is expressed as a proportional coefficient in a linear equation relating the amplitudes of surface soil (ground) heat flux and temperature. Tests of the proposed method demonstrate that this simple method is potentially useful in the Earth and extra-terrestrial remote sensing.

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