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From Bright Windows to Dark Spots: Snow Cover Controls Melt Pond Optical Properties During Refreezing
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2021 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 48, no 23Article in journal (Refereed) Published
Abstract [en]

Melt ponds have a strong impact on the Arctic surface energy balance and the ice-associated ecosystem because they transmit more solar radiation compared to bare ice. In the existing literature, melt ponds are considered as bright windows to the ocean, even during freeze-up in autumn. In the central Arctic during the summer-autumn transition in 2018, we encountered a situation where more snow accumulated on refrozen melt ponds compared to the adjacent bare ice, leading to a reduction in light transmittance of the ponds even below that of bare ice. Results from a radiative transfer model support this finding. This situation has not been described in the literature before, but has potentially strong implications for example on autumn ecosystem activity, oceanic heat budget, and thermodynamic ice growth.

Place, publisher, year, edition, pages
John Wiley & Sons, Ltd , 2021. Vol. 48, no 23
Keywords [en]
sea ice, Arctic, ponded ice, puddles, transmittance, remotely operated vehicle
National Category
Natural Sciences
Research subject
SWEDARCTIC 2018, Arctic Ocean 2018
Identifiers
URN: urn:nbn:se:polar:diva-8856DOI: 10.1029/2021GL095369OAI: oai:DiVA.org:polar-8856DiVA, id: diva2:1628939
Available from: 2022-01-17 Created: 2022-01-17 Last updated: 2022-01-17Bibliographically approved

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