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Illustrating the temporal progress of environmental change / Joann W. Harvey in Photogrammetric Engineering & Remote Sensing, PERS, vol 79 n° 12 (December 2013)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 79 n° 12 (December 2013) . - pp 1159 - 1170 Titre : Illustrating the temporal progress of environmental change Type de document : Article/Communication Auteurs : Joann W. Harvey, Auteur ; Edwin J. Green, Auteur Année de publication : 2013 Article en page(s) : pp 1159 - 1170 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] Alaska (Etats-Unis) [Termes IGN] analyse diachronique [Termes IGN] détection de changement [Termes IGN] image NOAA-AVHRR [Termes IGN] nébulosité Résumé : (Auteur) Remotely sensed Advanced Very High Resolution Radiometer (AVHRR) images, collected during the northern Alaskan growing seasons of 1995 through 2011, and a Bayesian Regression Tree modeling method were brought together, with two novel ideas, to characterize year-to-year environmental change in a multivariate feature space (vegetation, temperature, precipitable water, and cloud cover). The method used collection year as the "response" variable, and the algorithm was applied in two stages to reduce the effects of cloud cover upon the results and to reveal the temporal distribution of cloudy conditions. The analysis identified a shift in environmental conditions between 2003 and 2004 when cloudy and wet conditions were replaced by clear and dry conditions. Gradual changes that occurred throughout the study period were also detected. The analysis also confirmed that it could detect that region's recent (2007, 2010, 2011) warming associated with sea ice melting. Numéro de notice : A2013-692 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.79.12.1159 En ligne : https://doi.org/10.14358/PERS.79.12.1159 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32828 [article]