Articles | Volume 29, issue 19
https://doi.org/10.5194/hess-29-5065-2025
https://doi.org/10.5194/hess-29-5065-2025
Research article
 | 
09 Oct 2025
Research article |  | 09 Oct 2025

Enhancing the performance of 1D–2D flood models using satellite laser altimetry and multi-mission surface water extent maps from Earth observation (EO) data

Theerapol Charoensuk, Claudia Katrine Corvenius Lorentzen, Anne Beukel Bak, Jakob Luchner, Christian Tøttrup, and Peter Bauer-Gottwein

Data sets

Ice, Cloud, and Land Elevation Satellite (ICESat-2) Project Algorithm Theoretical Basis Document (ATBD) for Global Geolocated Photons ATL03, Version 6, ICESat-2 Project T. A. Neumann et al. https://doi.org/10.5067/GA5KCLJT7LOT

Copernicus DEM – Global and European Digital Elevation Model CDSE https://doi.org/10.5270/ESA-c5d3d65

FABDEM V1-2 J. Neal and L. Hawker https://doi.org/10.5523/bris.s5hqmjcdj8yo2ibzi9b4ew3sn

ATLAS/ICESat-2 L2A Global Geolocated Photon Data, ATL03, Version 5 T. A. Neumann et al. https://doi.org/10.5067/ATLAS/ATL03.005

ATLAS/ICESat-2 L3A Land and Vegetation Height ATL08 product A. Neuenschwander et al. https://doi.org/10.5067/ATLAS/ATL08.005

SRTM v3 DEM T. G. Farr et al. https://doi.org/10.1016/j.rse.2018.11.005

ASTER GDEM v3 M. Abrams et al. https://doi.org/10.3390/rs12071156

MERIT DEM D. Yamazaki et al. https://doi.org/10.1016/j.rse.2015.10.014

Model code and software

Enhancing the performance of 1D–2D flood models using satellite laser altimetry and multi-mission surface water extent maps from Earth observation (EO) data Technical University of Denmark https://doi.org/10.5281/zenodo.17070190

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Short summary
The objective of this study is to enhance the performance of 1D–2D flood models using satellite Earth observation data. The main factor influencing a 1D–2D flood model is the accuracy of the digital elevation model (DEM). Two workflows are introduced to improve the 1D–2D flood model: (1) in the DEM analysis workflow, 10 DEM products are evaluated using the ICESat-2 ATL08 benchmark, while (2) in the flood map analysis workflow, flood extent maps derived from multi-mission satellite datasets are compared with simulated flood maps.
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