La base de ressources documentaires de l'IRD
Publications des scientifiques de l'IRD
Boudhar A., Duchemin Benoît, Hanich L., Boulet Gilles, Chehbouni Abdelghani. Spatial distribution of the air temperature in mountainous areas using satellite thermal infra-red data. Comptes Rendus Geoscience, 2011, 343 (1), p. 32-42. ISSN 1631-0713
Document en accès réservé (Intranet IRD)
doi:10.1016/j.crte.2010.11.004
http://hal.ird.fr/ird-00667480
| Titre | Spatial distribution of the air temperature in mountainous areas using satellite thermal infra-red data |
| Année de publication | 2011 |
| Type de document | Article référencé dans le Web of Science WOS:000288152500004 |
| Auteurs | Boudhar A., Duchemin Benoît, Hanich L., Boulet Gilles, Chehbouni Abdelghani. |
| Source | Comptes Rendus Geoscience, 2011, 343 (1), p. 32-42. ISSN 1631-0713 |
| Résumé | Understanding the spatial distribution of air temperature in mountainous areas is essential in hydrological modelling. In the Moroccan High-Atlas range, the meteorological stations network is sparse. In order to get additional information, we investigated the thermal infrared data supplied by the Enhanced Thematic Mapper (ETM +) sensor onboard the Landsat 7 satellite. The brightness temperature derived from ETM+ images is used as a proxy for air temperature to set up a model that describes its spatial distribution. This model accounts for sun location and topographic characteristics derived from the SRTM digital elevation model. It was evaluated on the Rheraya watershed, a 225-km(2) region located within the semi-arid High-Atlas mountain range, using two different sources of data. The first data set consists in in-situ air temperature collected by meteorological stations installed during the experiment at various altitudes from 1400 to 3200 m. The second data set is satellite estimates of snow-covered areas (SCA) derived from MODIS images over the whole catchment at 500 m spatial resolution. |
| Plan de classement | 021 ; 126 |
| Localisation | Fonds IRD [F B010053381] |
| Identifiant IRD | fdi:010053381 |
| Lien permanent | http://www.documentation.ird.fr/hor/fdi:010053381 |
|
Accès direct Espace intranet IST (accès réservé) |
Services Horizon |
Centres de documentation |