Title In-situ monitoring of the time evolution of the effective thermal conductivity of snow
Author Morin, S.; Domine, F.; Arnaud, L.; Picard, G.
Author Affil Morin, S., CNRS-Université Joseph Fourier-Grenoble I, Saint Martin d'Heres, France. Other: Meteo-France, France
Source Cold Regions Science and Technology, 64(2), p.73-80, ; International snow science workshop 2009, Davos, Switzerland, Sept. 27- Oct. 2, 2009, edited by J. Schweizer. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0165-232X
Publication Date Nov. 2010
Notes In English. Based on Publisher- supplied data GeoRef Acc. No: 309832
Index Terms instruments; measuring instruments; measurement; probes; snow; snow cover; snow stratigraphy; temperature; thermal conductivity
Abstract We report on a 3-month long time series of in-situ measurements of the effective thermal conductivity (keff) of snow at 6 heights in an Alpine snowpack in the Mont-Blanc mountain range, France, at an altitude of 2400 m. Measurements were carried out automatically every 2 days using heated- needle probes embedded in the snowpack. The experimental procedure used is presented in detail and demonstrates the applicability of single heated-needle probes for the evaluation of keff in snow, both for long- term measurements within the snowpack and occasional use in the field. Results based on 139 automatically collected data show keff values ranging between 0.04 and 0.35 W m-1 K- 1, and a consistent pattern of effective thermal conductivity increase throughout the measurements campaign. The temporal rate of change of keff varies up to 0.01 W m-1 K-1 day-1, with maximum values just after snowfall.
URL http://hdl.handle.net/10.1016/j.coldregions.2010.02.008
Publication Type conference paper or compendium article
Record ID 65006933