GeoComp-n, an advanced system for the processing of coarse and medium resolution satellite data. Part 2: Biophysical products for Northern ecosystems
- 1 January 2002
- journal article
- Published by Taylor & Francis in Canadian Journal of Remote Sensing
- Vol. 28 (1) , 21-44
- https://doi.org/10.5589/m02-003
Abstract
Effective use of satellite data for environmental monitoring requires consistent, high-throughput processing of large volumes of data as it is transformed from raw measurements to useful higher-level products. "GeoComp-n", the next generation of the Geocoding and Compositing System developed at the Canada Centre for Remote Sensing, Natural Resources Canada, was developed as a software solution to this challenge, for use with satellites that provide daily data for the landmass of Canada or comparably large areas. In this paper, the authors discuss the characteristics of the algorithms and methods used in the generation of GeoComp-n products. The theoretical basis and assumptions in the algorithms are described, and the quality of the products is discussed based on validation studies. Examples of a suite of products for Canada during one 10-day period illustrate the diversity and quality of observations for the terrestrial biosphere that may be derived frequently and over large areas from satellites. Issues... L'utilisation efficace des données fournies par les satellites en surveillance de l'environnement exige le traitement uniforme à grande capacité de grands volumes de données brutes qui sont ainsi transformées en produits utiles plus évolués. Le GeoComp-n a été mis au point à titre de solution logicielle à ce problème; il est utilisé avec des satellites fournissant des données quotidiennes sur la masse continentale du Canada ou sur de grandes étendues comparables. Dans cette deuxième communication, nous examinons les caractéristiques des algorithmes et des méthodes utilisées pour générer les produits GeoComp-n. Les assises théoriques et les hypothèses fondamentales sur lesquelles sont basés les algorithmes sont discutées; la qualité des produits est examinée à la lumière d'études de validation. Des exemples d'une collection de produits pour le Canada visant un intervalle de dix jours sont utilisés pour illustrer la diversité et la qualité des observations sur la biosphère qu'il est souvent possible de déri...Keywords
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