Earth Surface Dynamics
Earth Surface Dynamics
ESurf
Articles | Volume 7, issue 2
Articles | Volume 7, issue 2
https://doi.org/10.5194/esurf-7-475-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-7-475-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 7, issue 2
Research article
 | 
29 May 2019
Research article |  | 29 May 2019

Determining the optimal grid resolution for topographic analysis on an airborne lidar dataset

Taylor Smith, Aljoscha Rheinwalt, and Bodo Bookhagen

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Short summary
Representing the surface of the Earth on an equally spaced grid leads to errors and uncertainties in derived slope and aspect. Using synthetic data, we develop a quality metric that can be used to compare the uncertainties in different datasets. We then apply this method to a real-world lidar dataset, and find that 1 m data have larger error bounds than lower-resolution data. The highest data resolution is not always the best choice – it is important to consider the quality of the data.
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