Using thermal infrared temperature over sparse semi-arid vegetation for sensible heat flux estimation IGARSS'95 : quantitative remote sensing for science and application : advance program Troufleau, D. /Lhomme, Jean-Paul /Monteny, Bruno Vidal, A. Moran, M.S. RELATION CLIMAT COUVERT VEGETAL INTERFACE VEGETATION ATMOSPHERE TRANSFERT DE CHALEUR FLUX THERMIQUE TEMPERATURE DE SURFACE ESTIMATION MODELISATION ETUDE EXPERIMENTALE ETUDE COMPARATIVE TELEDETECTION INFRAROUGE To estimate sensible heat flux using thermal infra-red temperature T/sub r/ over sparse semi-arid vegetation, a knowledge of either the corrective term kB/sup -1/ or the difference between radiometric and aerodynamic surface temperatures T/sub r/-T/sub o/ is usually required. Several experimental data sets acquired over various sparse vegetation in semi-arid areas (fallow savannah and millet field of HAPEX-Sahel, grassland and shrubland of MONSOON' 90) are used to study the experimental behavior of these variables. When considering the extreme variability of kB/sup -1/ and the difficulty in predicting its value, the relationship between T/sub r/ and T/sub o/ was more thoroughly studied and parameterized using the conceptual two-layer model of Shuttleworth and Wallace (1985) IEEE URSI Stein T.I. (ed.) 1995 text https://www.documentation.ird.fr/hor/fdi:010020951 fdi:010020951 Troufleau D., Lhomme Jean-Paul, Monteny Bruno, Vidal A., Moran M.S.. Using thermal infrared temperature over sparse semi-arid vegetation for sensible heat flux estimation. In : Stein T.I. (ed.), . IGARSS'95 : quantitative remote sensing for science and application : advance program IEEE ; URSI, 1995, 2227-2229 IGARSS'95 : Quantitative Remote Sensing for Science and Application : Advance Program : Symposium, Florence (ITA), 1995/07/10-14 EN ZONE SAHELIENNE ZONE SEMIARIDE