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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 17, issue 6
Ann. Geophys., 17, 838–854, 1999
https://doi.org/10.1007/s00585-999-0838-2
© European Geosciences Union 1999
Ann. Geophys., 17, 838–854, 1999
https://doi.org/10.1007/s00585-999-0838-2
© European Geosciences Union 1999

  30 Jun 1999

30 Jun 1999

MUREX: a land-surface field experiment to study the annual cycle of the energy and water budgets

J.-C. Calvet1, P. Bessemoulin1, J. Noilhan1, C. Berne1, I. Braud2, D. Courault3, N. Fritz1, E. Gonzalez-Sosa2, J.-P. Goutorbe1, R. Haverkamp2, G. Jaubert1, L. Kergoat4, G. Lachaud1, J.-P. Laurent2, P. Mordelet5, A. Olioso3, P. Péris1, J.-L. Roujean1, J.-L. Thony2, C. Tosca5, M. Vauclin2, and D. Vignes5 J.-C. Calvet et al.
  • 1Météo-France, CNRM/GAME, URA CNRS 1357, 31057 Toulouse Cedex 1, France
  • 2LTHE, UMR CNRS 5564, INPG, ORSTOM, UJF, BP53 38041 Grenoble Cedex 9, France
  • 3INRA Bioclimatologie, 84914 Avignon Cedex 9, France
  • 4Laboratoire d'Ecologie Terrestre, UMR CNRS 5552, 31405 Toulouse Cedex 4, France
  • 5CESBIO, UMR CNRS 141, 31401 Toulouse Cedex 4, France

Abstract. The MUREX (monitoring the usable soil reservoir experimentally) experiment was designed to provide continuous time series of field data over a long period, in order to improve and validate the Soil-vegetation-Atmosphere Transfer (SVAT) parameterisations employed in meteorological models. Intensive measurements were performed for more than three years over fallow farmland in southwestern France. To capture the main processes controlling land-atmosphere exchanges, the local climate was fully characterised, and surface water and energy fluxes, vegetation biomass, soil moisture profiles, surface soil moisture and surface and soil temperature were monitored. Additional physiological measurements were carried out during selected periods to describe the biological control of the fluxes. The MUREX data of 1995, 1996, and 1997 are presented. Four SVAT models are applied to the annual cycle of 1995. In general, they succeed in simulating the main features of the fallow functioning, although some shortcomings are revealed.

Key words. Hydrology (evapotranspiration; soil moisture; water-energy interactions).

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