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Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: The Penetration of Solar Radiation Into Carbon Dioxide Ice
Author(s): Chinnery, Hannah
Hagermann, Axel
Kaufmann, Erika
Lewis, Stephen R
Keywords: carbon dioxide
polar caps
e‐folding scale
solar irradiation
Issue Date: 30-Apr-2018
Citation: Chinnery H, Hagermann A, Kaufmann E & Lewis SR (2018) The Penetration of Solar Radiation Into Carbon Dioxide Ice, Journal of Geophysical Research: Planets, 123 (4), pp. 864-871.
Abstract: Icy surfaces behave differently to rocky or regolith‐covered surfaces in response to irradiation. A key factor is the ability of visible light to penetrate partially into the subsurface. This results in the solid‐state greenhouse effect, as ices can be transparent or translucent to visible and shorter wavelengths, while opaque in the infrared. This can lead to significant differences in shallow subsurface temperature profiles when compared to rocky surfaces. Of particular significance for modeling the solid‐state greenhouse effect is the e‐folding scale, otherwise known as the absorption scale length, or penetration depth, of the ice. While there have been measurements for water ice and snow, pure and with mixtures, to date, there have been no such measurements published for carbon dioxide ice. After an extensive series of measurements we are able to constrain the e‐folding scale of CO2 ice for the cumulative wavelength range 300 to 1,100 nm, which is a vital parameter in heat transfer models for the Martian surface, enabling us to better understand surface‐atmosphere interactions at Mars' polar caps.
DOI Link: 10.1002/2018JE005539
Rights: ©2018. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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