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Air-sea ice gases exchange: update of recent findings, outcomes from sea ice models, caveats and open questions
Delille, Bruno; Zhou, Jiayun; Kotovitch, Marie et al.
2015SOOS/WRCP/ESA Workshop on Southern Ocean Air-sea fluxes
 

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Abstract :
[en] There are growing evidences that sea ice exchanges climate gases with the atmosphere. We will rapidly present a state of the art of current large scale assessment of spring and summer uptake of atmospheric CO2. We will challenge these assessments with 1) new evidence of significant winter CO2 release for winter experiments 2) new finding of the role of bubbles formation and transport within sea ice and 3) impurities expulsion derived from combined artificial ice experiment and modelling. Finally, comparison of air-ice fluxes derived from automated chamber and micrometeorological method and, mechanistic and box models show significant discrepancies that suggest that the contribution of sea ice to the air-ocean fluxes of CO2 remain an open question. We will also highlight that sea ice contribute to the fluxes of other gases as CH4 ,N2O and DMS
Disciplines :
Earth sciences & physical geography
Author, co-author :
Delille, Bruno  ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique
Zhou, Jiayun
Kotovitch, Marie ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique
Heinesch, Bernard  ;  Université de Liège > Ingénierie des biosystèmes (Biose) > Echanges Ecosystèmes - Atmosphère
Van Der Linden, Fanny ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique
Crabeck, O.
Moreau, S.
Vancoppenolle, M.
Tison, J.-L.
Language :
English
Title :
Air-sea ice gases exchange: update of recent findings, outcomes from sea ice models, caveats and open questions
Publication date :
21 September 2015
Event name :
SOOS/WRCP/ESA Workshop on Southern Ocean Air-sea fluxes
Event place :
Frascati, Italy
Event date :
21-23 September 2015
Audience :
International
Available on ORBi :
since 12 October 2015

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