Articles | Volume 13, issue 3
Research article
02 Apr 2019
Research article |  | 02 Apr 2019

A multi-season investigation of glacier surface roughness lengths through in situ and remote observation

Noel Fitzpatrick, Valentina Radić, and Brian Menounos

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Cited articles

Anderson, B., Mackintosh, A., Stumm, D., and Fitzsimons, S. J.: Climate sensitivity of a high-precipitation glacier in New Zealand, J. Glaciol., 56, 114–128,, 2010. 
Andreas, E. L.: A Theory for the Scalar Roughness and the Scalar Transfer Coefficients over Snow and Sea Ice, Bound.-Lay. Meteorol., 38, 159–184,, 1987. 
Andreas, E. L., Persson, P. O. G., Jordan, R. E., Horst, T. W., Guest, P. S., Grachev, A. A., and Fairall, C. W.: Parameterizing Turbulent Exchange over Sea Ice in Winter, J. Hydrometeorol., 11, 87–104,, 2010. 
Arnold, N. S. and Rees, G.: Self-similarity in glacier surface characteristics, J. Glaciol., 49, 547–554,, 2003. 
Aubinet, M.: Eddy covariance CO2 flux measurements in nocturnal conditions: an analysis of the problem, Ecol. Appl., 18, 1368–1378,, 2008. 
Short summary
Measurements of surface roughness are rare on glaciers, despite being an important control for heat exchange with the atmosphere and surface melt. In this study, roughness values were determined through measurements at multiple locations and seasons and found to vary across glacier surfaces and to differ from commonly assumed values in melt models. Two new methods that remotely determine roughness from digital elevation models returned good performance and may facilitate improved melt modelling.