Synergistic Use of Multimodal Data for Vegetation Status Monitoring.
Charou, Eleni¹; Stefouli, Marianthi²; Poirazidis, Konstantinos³; Martinis, Aristotelis^3
1NCSR DEMOKRITOS, GREECE; ²National Center of Sustainable Development, GREECE; ³TEI of Ionian Islands - Department of Environmental Technology and Ecology, GREECE

The objective of this paper is to assess the vegetation status by using multi-temporal and multimodal data, namely, ENVISAT MERIS, Landsat (MSS, TM, ETM+) and EO1-ALI data of the Ionian islands, Greece. MERIS images were collocated with available Landsat or EO1-ALI data resulting in images that preserve the MERIS final spectral resolution (15 bands) and the Landsat or EO1-ALI spatial resolution (30m or 10m respectively). This enables us to use Vegetation Indices specifically designed to monitor vegetation status using MERIS data such as MERIS Terrestrial Chlorophyll index (MTCI) which is linked to canopy chlorophyll content, Leaf Area Index (LAI), fraction of Absorbed Photosynthetically Active Radiation (fAPAR) and Fraction of Vegetation Cover (fCover) . Results are a evaluated and limitations are discussed