Title :
SeaWiFS for global biosphere applications
Author :
Gobron, N. ; Mélin, F. ; Pinty, B. ; Verstraete, M.M.
Author_Institution :
EC-Joint Res. Center, Space Applications Inst., Ispra, Italy
Abstract :
Illustrates the potential of SeaWiFS data for land surface applications at global scale, including land cover related issues. The main terrestrial product documents vegetated surfaces through the Fraction of Absorbed Photosynthetically Active Radiation (FAPAR). The method uses in the same time full resolution LAC (Local Area Coverage) imagery received at ground stations and sub-sampled GAC (Global Area Coverage) recorded on board the sensor, to derive 10-day and monthly global products on a two-kilometre resolution geographical grid. The algorithm merges the two types of data giving priority to LAC whenever possible, since GAC imagery is only a sub-sampling of the actual full resolution pixels of the original LAC data. When only GAC data are available, repeating overpasses are used to obtain an almost geographically complete full resolution map. Examples of regional and global applications are shown in order to demonstrate the potential of the proposed scheme
Keywords :
vegetation mapping; OrbView-2; Sea-viewing Wide Field-of-view Sensor; SeaWiFS data; algorithm; fraction of absorbed photosynthetically active radiation; global area coverage; global biosphere applications; land cover; land surface applications; local area coverage imagery; monthly global products; repeating overpasses; vegetated surfaces; Atmosphere; Biosphere; Image resolution; Land surface; Lighting; Los Angeles Council; Monitoring; Sea surface; Spatial resolution; Vegetation mapping;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-7031-7
DOI :
10.1109/IGARSS.2001.977961
