Conversion of surface water coverage to water volume using satellite data

Misako Hatono, Keigo Noda, Hyungjun Kim, Somchai Baimoung, Kei Yoshimura, Kazuo Oki, Taikan Oki
Released: January 21, 2014

Conversion of surface water coverage to water volume using satellite data

Misako Hatono1), Keigo Noda2), Hyungjun Kim2), Somchai Baimoung3), Kei Yoshimura4), Kazuo Oki2), Taikan Oki2)

1) School of Engineering, The University of Tokyo
2) Institute of Industrial Science, The University of Tokyo
3) Ministry of Information and Communication Technology, Thailand
4) Atmosphere and Ocean Research Institute, The University of Tokyo

This study analyzed the relationship between inundated area and actual water volume using data from satellites, including the Moderate Resolution Imaging Spectroradiometer (MODIS) and Gravity Recovery and Climate Experiment (GRACE) satellite systems. The results showed that using relatively simple assumptions for the flow of water, a clear relationship could be demonstrated between inundation ratio and water volume. In the Chao Phraya River basin, the spatial average of the converted data from MODIS showed good correlation with the water volume measured by GRACE. Since the method used in this study does not rely heavily on the characteristics of a specific region, it is expected the approach would be applicable on a global scale if the necessary data were available.

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Copyright © 2014 Japan Society of Hydrology and Water Resources

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