Aerodynamic roughness length of crevassed  tidewater glaciers from UAV mapping

Dachauer, Armin; Hann, Richard; Hodson, Andrew J.

doi:https://doi.org/10.5194/tc-15-5513-2021

Articles | Volume 15, issue 12

https://doi.org/10.5194/tc-15-5513-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/tc-15-5513-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 12

Research article

|

09 Dec 2021

Research article |

| 09 Dec 2021

Aerodynamic roughness length of crevassed tidewater glaciers from UAV mapping

Armin Dachauer, Richard Hann, and Andrew J. Hodson

Data sets

z0 of crevassed tidewater glaciers A. Dachauer, R. Hann, and A. Hodson https://doi.org/10.18710/JMWF3E

Model code and software

ArminDach/z0_UAVs: (Version v1) A. Dachauer https://doi.org/10.5281/zenodo.5752212

Short summary

This study investigated the aerodynamic roughness length (z₀) – an important parameter to determine the surface roughness – of crevassed tidewater glaciers on Svalbard using drone data. The results point out that the range of z₀ values across a crevassed glacier is large but in general significantly higher compared to non-crevassed glacier surfaces. The UAV approach proved to be an ideal tool to provide distributed z₀ estimates of crevassed glaciers which can be used to model turbulent fluxes.