Now showing items 1-4 of 4
Causes of variability in light absorption by particles in snow at sites in Idaho and Utah.
The data presented are from samples of snow gathered approx. every few days at three sites in central Idaho from 27 January to 24 March 2014. In most cases samples were gathered at intervals throughout the snowpack depth. In a few cases we only sampled newly-fallen surface snow. Samples were also collected from a site to the ...
Parameterizations for narrowband and broadband albedo of pure snow, and snow containing mineral dust and black carbon
(Journal of Geophysical Research, 2015-04)
The reduction of snow spectral albedo by black carbon (BC) and mineral dust, both alone and in combination, is computed using radiative-transfer modeling. Broadband albedo is shown for mass fractions covering the full range from pure snow to pure BC and pure dust, and for snow grain radii from 5 μm to 2500 μm, to cover the ...
Measurements of light-absorbing particles in snow across the Arctic, North America, and China: effects on surface albedo
(Journal of Geophysical Research [in revision], 2017)
Using field observation, we perform radiative transfer calculations on snowpacks in the Arctic, China, and North America to quantify the impact of light-absorbing particles (LAPs) on snow albedo and its sensitivity to different factors. For new snow, the regional-averaged albedo reductions caused by all LAPs in the Arctic, ...
Effect of snow grain shape on snow albedo
(Journal of the Atmospheric Sciences, 2016-06)
Radiative transfer models of snow albedo have usually assumed a spherical shape for the snow grains, using Mie theory to compute single-scattering properties. The scattering by more realistic, nonspherical snow grains is less in the forward direction and more to the sides, resulting in a smaller asymmetry factor g (the mean ...