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Landsat-8 cloud-free observations in wet tropical areas: A case study in South East Asia

Laborde H., Douzal V., Ruiz Piña H.A., Morand S., Cornu J.F.. 2017. Remote Sensing Letters, 8 (6) : p. 537-546.

The recent launch of the Landsat-8 satellite, in parallel to the opening of 40 years of archives issued from the Landsat program, has created new opportunities for the design of large-scale initiatives for environmental monitoring at moderate spatial resolution. However, the availability of cloud-free observations stays a major limiting factor, especially in wet tropical areas like South East Asia (SEA). Based on the analysis of one year of Landsat-8 data acquired for the 69 path/row combinations that intersect SEA with the Fmask algorithm, we studied the temporal granularity of cloud-free observations. Our results show that the annual production of two quasi-complete composited maps for SEA seems achievable when 'greenness' and 'brownness' are close to their maximum, offering relevant opportunities for scientists and stakeholders involved in environment, biodiversity or health issues. (Résumé d'auteur)

Mots-clés : télédétection; paysage; climatologie; cartographie de l'occupation du sol; déboisement; utilisation des terres; impact sur l'environnement; surveillance de l¿environnement; surveillance épidémiologique; population rurale; image spot; satellite; couvert forestier; couverture végétale; pluviométrie; asie du sud-est; cambodge; république démocratique populaire lao; thaïlande

Thématique : Méthodes de relevé; Conservation de la nature et ressources foncières

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