Potential Of Sentinel-1 SAR Observations To Monitor Floods In The North Vietnam

As one of the countries affected the most by global warming and climate change, the frequency and intensity of extreme weather events occurring recently in Vietnam are increasing. Floods, among others, are one of the most damage disasters in Vietnam. In this paper, we illustrate how satellite data (especially free SAR data from the Sentinel-1 satellite) can be used to monitor floods, at 30 m spatial resolution, in the North Vietnam where the cloud cover is very high. Although there is no reference inundated map at the same spatial and temporal resolutions for comparison, SAR-derived permanent surface water map is in good agreement with free-cloud Landsat-derived surface water map. This study shows strong potential of SAR satellite observations for monitoring and forecasting applications over highly cloud-covered environments like the tropical regions.

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