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Evaporation of intercepted snow: measurement and modelling
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
Institute of Hydrology, Wallingford.
Institute of Hydrology, Wallingford.
1998 (English)In: Journal of Hydrology, ISSN 0022-1694, E-ISSN 1879-2707, Vol. 206, no 3-4, p. 151-163Article in journal (Refereed) Published
Abstract [en]

Snow storage on a coniferous forest canopy was measured using γ-ray attenuation and tree weighing systems, along with measurements of throughfall, using two plastic sheet net rainfall gauges. Meteorological parameters were measured with an automatic weather station. Estimates of evaporation of intercepted snow show an average rate of 0.24 mm h-1 and a maximum cumulative total of 3.9 mm in 7 h. Comparison with evaporation determined by a combination method with two different estimates of aerodynamic resistance (the "standard" rain aerodynamic resistance raL and a snow aerodynamic resistance raS-an order of magnitude larger than raL) showed that raL overestimated the evaporation by a factor of 2.6, whereas raS gave fair agreement with the measured evaporation. A multilayer model may be needed to take into account the variations of latent heat source area. Using the long-term measurements of the weight of snow on a single tree the total interception evaporation was estimated to be of the order 200 mm year-1.

Place, publisher, year, edition, pages
1998. Vol. 206, no 3-4, p. 151-163
National Category
Geochemistry
Research subject
Applied Geology
Identifiers
URN: urn:nbn:se:ltu:diva-7307DOI: 10.1016/S0022-1694(97)00016-4ISI: 000074304100001Scopus ID: 2-s2.0-0032078925Local ID: 5a72ebd0-e75c-11db-8a98-000ea68e967bOAI: oai:DiVA.org:ltu-7307DiVA, id: diva2:980196
Note
Godkänd; 1998; 20070410 (pafi)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Lundberg, Angela

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