Sensitivity of the Arctic Sea Ice Cover to the Summer Surface Scattering Layer

Smith, Madison M.; Light, Bonnie; Macfarlane, Amy R.; Perovich, Don K.; Holland, Marika M.; Shupe, Matthew D.

doi:10.1029/2022GL098349

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Sensitivity of the Arctic Sea Ice Cover to the Summer Surface Scattering Layer

2022
By Smith, Madison M. ; Light, Bonnie ; Macfarlane, Amy R. ; ...
Source: Geophysical Research Letters, 49, e2022GL098349

[PDF-1.91 MB]

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Details:

Journal Title:

Geophysical Research Letters
Personal Author:

Smith, Madison M. ; Light, Bonnie ; Macfarlane, Amy R. ; Perovich, Don K. ; Holland, Marika M. ; ... More +

Smith, Madison M. ; Light, Bonnie ; Macfarlane, Amy R. ; Perovich, Don K. ; Holland, Marika M. ; Shupe, Matthew D. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; PSL (Physical Sciences Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences)

OAR (Oceanic and Atmospheric Research) ; PSL (Physical Sciences Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences) Less -
Description:

The “surface scattering layer” (SSL) is the highly-scattering, coarse-grained ice layer that forms on the surface of melting, drained sea ice during spring and summer. Ice of sufficient thickness with an SSL has an observed persistent broadband albedo of ∼0.65, resulting in a strong influence on the regional solar partitioning. Experiments during the Multidisciplinary drifting Observatory for the Study of the Arctic Climate expedition showed that the SSL re-forms in approximately 1 day following manual removal. Coincident spectral albedo measurements provide insight into the SSL evolution, where albedo increased on sunny days with higher solar insolation. Comparison with experiments in radiative transfer and global climate models show that the sea ice albedo is greatly impacted by the SSL thickness. The presence of SSL is a significant component of the ice-albedo feedback, with an albedo impact of the same order as melt ponds. Changes in SSL and implications for Arctic sea ice within a warming climate are uncertain.
Keywords:

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Meltwater Sea Ice
Source:

Geophysical Research Letters, 49, e2022GL098349
DOI:

https://doi.org/10.1029/2022GL098349
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Journal Article
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urn:sha256:74955465f7d6d8a88d8d2bd9f8fe59253ab09af09745efc00f12f3962131564a
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https://repository.library.noaa.gov/view/noaa/45159/noaa_45159_DS1.pdf
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