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Scaling net primary production to a MODIS footprint in support of Earth observing system product validation / D. Turner in International Journal of Remote Sensing IJRS, vol 25 n° 10 (May 2004)  

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 25 n° 10 (May 2004) . - pp 1961 - 1979 Titre : Scaling net primary production to a MODIS footprint in support of Earth observing system product validation Type de document : Article/Communication Auteurs : D. Turner, Auteur ; S. Ollinger, Auteur ; et al., Auteur Année de publication : 2004 Article en page(s) : pp 1961 - 1979 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] erreur de classification [Termes IGN] erreur de mesure [Termes IGN] hétérogénéité [Termes IGN] image Terra-MODIS [Termes IGN] incertitude géométrique [Termes IGN] mise à l'échelle Résumé : (Auteur) Release of an annual global terrestrial net primary production (NPP) data layer has begun in association with the Moderate Imaging Spectroradiometer (MODIS) sensor, a component of the NASA Earth Observing System. The task of validating this product will be complicated by the mismatch in scale between groundbased NPP measurements and the coarse resolution (1 km) of the NPP product. In this paper we describe three relevant approaches to scaling NPP from the plot level to the approximately 25km2 footprint of the sensor, and discuss issues associated with operational comparisons to the MODIS NPP product. All approaches revealed considerable spatial heterogeneity in NPP at scales less than the resolution of the MODIS NPP product. The effort to characterize uncertainty in the validation data layers indicated the importance of treating the combination of classification error, sampling error, and measurement error. Generally, the optimal procedure for scaling NPP to a MODIS footprint will depend on local vegetation type, the scale of spatial heterogeneity, and available resources. In all approaches, high resolution remote sensing can play a critical role in characterizing land cover and relevant biophysical variables. Numéro de notice : A2004-145 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/0143116031000150013 En ligne : https://doi.org/10.1080/0143116031000150013 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26672 [article]

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