Articles | Volume 9, issue 1
Development and technical paper
28 Jan 2016
Development and technical paper |  | 28 Jan 2016

The improvement of soil thermodynamics and its effects on land surface meteorology in the IPSL climate model

F. Wang, F. Cheruy, and J.-L. Dufresne

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Cited articles

Ait-Mesbah, S., Dufresne, J.-L., Cheruy, F., and Hourdin, F.: Mean and diurnal range of surface temperature over semi-arid and arid regions depend strongly on soil thermal inertia, Geophys. Res. Lett., 42, 7572–7580,, 2015.
Abu-Hamdeh, N. H.: Thermal properties of soils as affected by density and water content, Biosyst. Eng., 86, 97–102,, 2003.
Balsamo, G., Beljaars, A., Scipal, K., Viterbo, P., van den Hurk, B., Hirschi, M., and Betts, A. K.: A revised hydrology for the ECMWF Model: verification from field site to terrestrial water storage and impact in the integrated forecast system, J. Hydrometeorol., 10, 623–643,, 2009.
Best, M. J., Pryor, M., Clark, D. B., Rooney, G. G., Essery, R .L. H., Ménard, C. B., Edwards, J. M., Hendry, M. A., Porson, A., Gedney, N., Mercado, L. M., Sitch, S., Blyth, E., Boucher, O., Cox, P. M., Grimmond, C. S. B., and Harding, R. J.: The Joint UK Land Environment Simulator (JULES), model description – Part 1: Energy and water fluxes, Geosci. Model Dev., 4, 677==699,, 2011.
Short summary
The soil thermodynamics in the IPSL climate model is improved by adopting a common vertical discretization for soil moisture and temperature, by coupling soil heat convection-conduction process, and by computing the thermal properties as a function of soil moisture and texture. The dependence of the soil thermal properties on moisture and texture lead to the most significant changes in the surface temperature, with the strongest effects taking place over dry areas and during the night.