ARIA-SG Flood Proxy Map: Japan, Typhoon Hagibis, Tokyo, 12 Oct 2019, v0.5

This preliminary map shows areas that are likely flooded (shown by light blue pixels of 30 m in size) in central Japan due to heavy rains brought by Typhoon Hagibis. It is validated using aerial images from the Geospatial Information Authority of Japan (GSI). The map extents are indicated by the white polygon. This map should be used as a guidance to identify areas that are likely flooded, and is less reliable over urban and vegetated areas. Derived from synthetic aperture radar data acquired by the Copernicus Sentinel-1 satellites operated by the European Space Agency (ESA) before (24 Sep) and during (12 Oct) the event. Analysed by the ARIA-SG team at the Earth Observatory of Singapore (EOS) in collaboration with NASA-JPL and Caltech. Data processing used an AWS Open Dataset of Copernicus Sentinel-1 data for the Asia region (https://registry.opendata.aws/sentinel1-slc-seasia-pds).