Biogeosciences
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Articles | Volume 12, issue 14
Articles | Volume 12, issue 14
https://doi.org/10.5194/bg-12-4195-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Special issue:
https://doi.org/10.5194/bg-12-4195-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 12, issue 14
Research article
 | 
16 Jul 2015
Research article |  | 16 Jul 2015

Transmissivity of solar radiation within a Picea sitchensis stand under various sky conditions

S. Dengel, J. Grace, and A. MacArthur

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Short summary
We tested the hypothesis that diffuse radiation from cloudy and overcast skies penetrates the canopy more effectively than direct radiation from clear skies. We compared the flux density and spectral properties of direct and diffuse radiation above, within and below a forest stand under sunny, cloudy and overcast conditions in a thinned Sitka spruce forest. We recorded vertical (1m resolution) and horizontal (2.5m resolution) profiles of radiation penetration at 1nm resolution.
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