Articles | Volume 15, issue 4
The Cryosphere, 15, 1931–1953, 2021
https://doi.org/10.5194/tc-15-1931-2021
The Cryosphere, 15, 1931–1953, 2021
https://doi.org/10.5194/tc-15-1931-2021

Research article 21 Apr 2021

Research article | 21 Apr 2021

Spectral attenuation coefficients from measurements of light transmission in bare ice on the Greenland Ice Sheet

Matthew G. Cooper et al.

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to revisions (further review by editor and referees) (30 Dec 2020) by Mark Flanner
AR by Matthew Cooper on behalf of the Authors (26 Feb 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (01 Mar 2021) by Mark Flanner
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Short summary
We measured sunlight transmitted into glacier ice to improve models of glacier ice melt and satellite measurements of glacier ice surfaces. We found that very small concentrations of impurities inside the ice increase absorption of sunlight, but the amount was small enough to enable an estimate of ice absorptivity. We confirmed earlier results that the absorption minimum is near 390 nm. We also found that a layer of highly reflective granular "white ice" near the surface reduces transmittance.