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Temperature lapse rates and surface energy balance at Storglaciären, northern Sweden
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Air and Water Science.
2007 (English)In: Glacier Mass Balance Changes and Meltwater Discharge, Wallingford: IAHS , 2007, Vol. 318, 186-194 p.Conference paper, Published paper (Refereed)
Abstract [en]

A detailed meteorological experiment, including the operation of several automatic weather stations on and outside the glacier, was performed on Storglaciären, a valley glacier in Sweden, in summer 2003. On average, near surface air temperature lapse rates derived from several weather stations on the glacier were –6.0 ± 3.5°C km-1, indicating strong temporal variability. We found no correlation with meteorological variables as a base for param-eterization in melt modelling. Surface energy balance computations showed that, on average, net radiation is the largest contributor to melt energy, in agreement with previous studies. Latent heat fluxes were positive throughout the simulation period indicating condensation. It was not possible to constrain roughness lengths within several orders of magnitudes, since the differences in modelled melt for all cases were still within the range of uncertainty pertinent to the melt measurements during the 13-day period of coincident meteorolo-gical and melt measurements.

Place, publisher, year, edition, pages
Wallingford: IAHS , 2007. Vol. 318, 186-194 p.
Series
IAHS publication, ISSN 0144-7815 ; 318
Keyword [en]
ablation, automatic weather stations, glacier, modelling, surface energy balance, temperature lapse rate
Keyword [sv]
glaciologi
National Category
Meteorology and Atmospheric Sciences
Identifiers
URN: urn:nbn:se:uu:diva-14908OAI: oai:DiVA.org:uu-14908DiVA: diva2:42679
Conference
IAHS Assembly, Foz do Iguaçu (Brazil), April 2005
Available from: 2008-05-15 Created: 2008-05-15 Last updated: 2010-02-24Bibliographically approved

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