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Record #197904:
Evaluating the diffuse attenuation coefficient of dry snow using an artificial light source / Kai Rasmus, Olli Huttunen.
Title: | Evaluating the diffuse attenuation coefficient of dry snow using an artificial light source / Kai Rasmus, Olli Huttunen. |
Author(s): | Rasmus, Kai. Huttunen, Olli. |
Date: | 2009. |
In: | Boreal Environment Research. (2009.), Vol. 14(6) (2009) |
Abstract: | Proposes non-destructive method for measuring diffuse attenuation coefficient (Kd) of snow, based on measurement of backscattered upwelling light from artificial source above snow cover (method helps to solve problem of snow cover disturbance during measurement). Describes Monte Carlo model of measurement system. Model runs made for different sized grains show that method produces higher values of (Kd) than methods using vertical profiles of downwelling irradiance. Coincidence is better for larger grains. Describes pilot study in Kilpisjärvi, northern Finland, in which attenuation coefficients obtained for dry snow show at visible wavelengths agreed reasonably with those from more traditional methods, but were much lower in infrared. |
Notes: | Boreal Environment Research. Vol. 14(6) :971-980 (2009). |
Keywords: | 551.32 -- Glaciology. 551.321.7 -- Snow cover, measurement of properties. 551.578.46 -- Snow cover and snow patches. 53 -- Physics. 551.322 -- Ice and snow. 535 -- Optics, light. 535.34 -- Ice, absorption of light. 519.673 -- Modelling. E3 -- Glaciology: instruments and methods. (*3) -- Arctic regions. (*56) -- Finland. (*561) -- Finnish Lapland. |
SPRI record no.: | 197904 |
LDR 01933naa#a2200000#a#4500 001 SPRI-197904 005 20240319013448.0 007 ta 008 240319s2009####xx#a##|##|###|0||#0|eng#d 035 ## ‡aSPRI-197904 040 ## ‡aUkCU-P‡beng‡eaacr 100 1# ‡aRasmus, Kai. 245 10 ‡aEvaluating the diffuse attenuation coefficient of dry snow using an artificial light source /‡cKai Rasmus, Olli Huttunen. 260 ## ‡a[S.l.] :‡b[s.n.],‡c2009. 300 ## ‡ap. 971-980 :‡bill., diags. 500 ## ‡aBoreal Environment Research. Vol. 14(6) :971-980 (2009). 520 3# ‡aProposes non-destructive method for measuring diffuse attenuation coefficient (Kd) of snow, based on measurement of backscattered upwelling light from artificial source above snow cover (method helps to solve problem of snow cover disturbance during measurement). Describes Monte Carlo model of measurement system. Model runs made for different sized grains show that method produces higher values of (Kd) than methods using vertical profiles of downwelling irradiance. Coincidence is better for larger grains. Describes pilot study in Kilpisjärvi, northern Finland, in which attenuation coefficients obtained for dry snow show at visible wavelengths agreed reasonably with those from more traditional methods, but were much lower in infrared. 650 07 ‡a551.32 -- Glaciology.‡2udc 650 07 ‡a551.321.7 -- Snow cover, measurement of properties.‡2udc 650 07 ‡a551.578.46 -- Snow cover and snow patches.‡2udc 650 07 ‡a53 -- Physics.‡2udc 650 07 ‡a551.322 -- Ice and snow.‡2udc 650 07 ‡a535 -- Optics, light.‡2udc 650 07 ‡a535.34 -- Ice, absorption of light.‡2udc 650 07 ‡a519.673 -- Modelling.‡2udc 650 07 ‡aE3 -- Glaciology: instruments and methods.‡2local 651 #7 ‡a(*3) -- Arctic regions.‡2udc 651 #7 ‡a(*56) -- Finland.‡2udc 651 #7 ‡a(*561) -- Finnish Lapland.‡2udc 700 1# ‡aHuttunen, Olli. 773 0# ‡7nnas ‡tBoreal Environment Research. ‡gVol. 14(6) (2009) ‡wSPRI-140857 916 ## ‡a2011/10/12 -- RF 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20240319 ‡bRF