Satellite observations and in-situ measurements to monitor Maldivian atolls over time

The Maldives, whose land elevation is approximately 1 m above mean sea level, are often associated with the threat of rising sea levels. To evidence the flood exposure of small atolls belonging to the Maldivian archipelago, we analysed satellite measurements and in-situ environmental data. A comparison between the emerged land area, obtained from synthetic aperture radar imagery at a time span of about 41 months is performed, showing that very high resolution and long-term images stack is needed to appreciate significant coastal changes. These preliminary results are discussed analysing the local sea wave and the sea level to evidence possible temporal trends and correlations.