Articles | Volume 23, issue 1
https://doi.org/10.5194/nhess-23-375-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-23-375-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
01 Feb 2023
Research article |
| 01 Feb 2023
| 01 Feb 2023
Bare-earth DEM generation from ArcticDEM and its use in flood simulation
School of Geographical Sciences, University of Bristol, Bristol, UK
Paul D. Bates
School of Geographical Sciences, University of Bristol, Bristol, UK
Jeffery C. Neal
School of Geographical Sciences, University of Bristol, Bristol, UK
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Short summary
In this paper, we test two approaches for removing buildings and other above-ground objects from a state-of-the-art satellite photogrammetry topography product, ArcticDEM. Our best technique gives a 70 % reduction in vertical error, with an average difference of 1.02 m from a benchmark lidar for the city of Helsinki, Finland. When used in a simulation of rainfall-driven flooding, the bare-earth version of ArcticDEM yields a significant improvement in predicted inundation extent and water depth.
In this paper, we test two approaches for removing buildings and other above-ground objects from...
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