CO2 deposition over the multi-year ice of the western Weddell Sea

peer reviewed Field measurements by eddy correlation (EC) indicate an average uptake of 0.6 g CO2 m(-2) d(-1) by the ice-covered western Weddell Sea in December 2004. At the same time, snow that covers ice floes of the western Weddell Sea becomes undersaturated with CO2 relative to the atmosphere du...

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Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Zemmelink, H. J., Delille, Bruno, Tison, Jean-Louis, Hintsa, E. J., Houghton, L., Dacey, J. W. H.
Format: Article in Journal/Newspaper
Language:English
Published: Amer Geophysical Union 2006
Subjects:
Physical
chemical
mathematical & earth Sciences
Physique
chimie
mathématiques & sciences de la terre
Weddell Sea
Online Access:https://orbi.uliege.be/handle/2268/2138
https://doi.org/10.1029/2006GL026320
Description
Summary:peer reviewed Field measurements by eddy correlation (EC) indicate an average uptake of 0.6 g CO2 m(-2) d(-1) by the ice-covered western Weddell Sea in December 2004. At the same time, snow that covers ice floes of the western Weddell Sea becomes undersaturated with CO2 relative to the atmosphere during early summer. Gradients of CO2 from the ice to the atmosphere do not support significant diffusive fluxes and are not strong enough to explain the observed CO2 deposition. We hypothesize that the transport of air through the snow pack is controlled by turbulence and that undersaturation of CO2 is caused by biological productivity at the ice-snow and snow-atmosphere interface. The total carbon uptake by the multi-year ice zone of the western Weddell Sea in December could have been as high as 6.6 Tg C y(-1). Belcanto

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