Articles | Volume 18, issue 21
Biogeosciences, 18, 5851–5869, 2021
https://doi.org/10.5194/bg-18-5851-2021
Biogeosciences, 18, 5851–5869, 2021
https://doi.org/10.5194/bg-18-5851-2021

Research article 03 Nov 2021

Research article | 03 Nov 2021

On the influence of erect shrubs on the irradiance profile in snow

Maria Belke-Brea et al.

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Measured and simulated snow irradiance profiles as well as snow SSA and density data measured at shrub and shrub-free sites in the Tasiapik Valley in Umiujaq, Northern Québec, v. 1.0 (2015–2015) M. Belke-Brea, F. Domine, G. Picard, and L. Arnaud https://doi.org/10.5885/45753CEF2A3EB5488B442E3

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Short summary
Expanding shrubs in the Arctic change snowpacks into a mix of snow, impurities and buried branches. Snow is a translucent medium into which light penetrates and gets partly absorbed by branches or impurities. Measurements of light attenuation in snow in Northern Quebec, Canada, showed (1) black-carbon-dominated light attenuation in snowpacks without shrubs and (2) buried branches influence radiation attenuation in snow locally, leading to melting and pockets of large crystals close to branches.
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