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www.biogeosciences-discuss.net/6/1945/2009/
doi:10.5194/bgd-6-1945-2009
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Sensible and latent heat flux from radiometric surface temperatures at the regional scale: methodology and validation
1IBIMET-CNR, Istituto di Biometeorologia, Consiglio Nazionale delle Ricerche, Via G. Caproni 8, 50145 Firenze, Italy
2INRA, UR 1263 EPHYSE, BP 81, 33833 Villenave d'Ornon cedex, France
3Alterra Greenworld, Duivendaal 2, 6700 AA Wageningen, The Netherlands
4CNRM-GAME, Météo-France, 42 avenue G. Coriolis, 31057 Toulouse, France
Abstract. The CarboEurope Regional Experiment Strategy (CERES) was designed to develop and test a range of methodologies to assess regional surface energy and mass exchange of a large study area in the south-western part of France. This paper describes a methodology to estimate sensible and latent heat fluxes on the basis of net radiation, surface radiometric temperature measurements and information obtained from available products derived from the Meteosat Second Generation (MSG) geostationary meteorological satellite, weather stations and ground-based eddy covariance towers. It is based on a simplified bulk formulation of sensible heat flux that considers the degree of coupling between the vegetation and the atmosphere and estimates latent heat as the residual term of net radiation. Estimates of regional energy fluxes obtained in this way are validated at the regional scale by means of a comparison with direct flux measurements made by airborne eddy-covariance. The results show an overall good matching between airborne fluxes and estimates of sensible and latent heat flux obtained from radiometric surface temperatures that holds for different weather conditions and different land use types. The overall applicability of the proposed methodology to regional studies is discussed.
Discussion Paper (PDF, 2013 KB) Interactive Discussion (Closed, 4 Comments) Final Revised Paper (BG) Special Issue
Notice on Discussion StatusCitation: Miglietta, F., Gioli, B., Brunet, Y., Hutjes, R. W. A., Matese, A., Sarrat, C., and Zaldei, A.: Sensible and latent heat flux from radiometric surface temperatures at the regional scale: methodology and validation, Biogeosciences Discuss., 6, 1945-1978, doi:10.5194/bgd-6-1945-2009, 2009. Bibtex EndNote Reference Manager XML
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