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

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Cited articles

Abbas, M. R., Bin Rasib, A. W., Abbas, T. R., Ahmad, B. B., and Dutsenwai, H. S.: Assessment of Aerodynamic Roughness Length Using Remotely Sensed Land Cover Features and MODIS, IOP C. Ser. Earth Env., 722, 012015,, 2021. a
Agisoft LLC: Agisoft Metashape, available at:, last access: 27 July 2020. a
Bhardwaj, A., Sam, L., Akanksha, Martín-Torres, F. J., and Kumar, R.: UAVs as remote sensing platform in glaciology: Present applications and future prospects, Remote Sen. Environ., 175, 196–204,, 2016. a, b
Błaszczyk, M., Jania, J. A., and Hagen, J. O.: Tidewater glaciers of Svalbard: Recent changes and estimates of calving fluxes, Pol. Polar Res., 30, 85–142, 2009. a
Brock, B. W., Willis, I. C., Sharp, M. J., and Arnold, N. S.: Modelling seasonal and spatial variations in the surface energy balance of Haut Glacier d'Arolla, Switzerland, Ann. Glaciol., 31, 53–62,, 2000. a
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.