Global prediction of thermal soil regimes

J. M. H. Hendrickx; H. Xie; J. B. J. Harrison; B. Borchers; J. Simunek

doi:10.1117/12.782251

29 April 2008 Global prediction of thermal soil regimes

J. M. H. Hendrickx, H. Xie, J. B. J. Harrison, B. Borchers, J. Simunek

Proceedings Volume 6953, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XIII; 69530Y (2008) https://doi.org/10.1117/12.782251
Event: SPIE Defense and Security Symposium, 2008, Orlando, Florida, United States

Abstract

A thorough understanding of thermal soil regimes is critical information for a wide variety of disciplines and engineering applications as well as for the evaluation of potential and limitations of thermal and optical sensors. In this study we have developed a procedure for the evaluation of global thermal soil regimes. First, pedotransfer functions are used to derive thermal soil properties (volumetric soil heat capacity and thermal conductivity) from readily available soil data on texture, bulk density, and organic carbon. Next, the average annual soil temperature is derived from the average annual air temperature. Then, the thermal top boundaries are derived either for well-watered sites using the daily and annual air temperature amplitudes as proxies for the daily and annual soil surface temperature amplitudes or for a wide range of environmental conditions using the model HYDRUS1D. A thorough validation of the proposed procedure is needed for the quantification of the probability with which soil thermal regimes can be predicted.

Citation Download Citation

J. M. H. Hendrickx, H. Xie, J. B. J. Harrison, B. Borchers, and J. Simunek "Global prediction of thermal soil regimes", Proc. SPIE 6953, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XIII, 69530Y (29 April 2008); https://doi.org/10.1117/12.782251

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