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| Titel |
Parameterization of atmosphere–surface exchange of CO2 over sea ice |
| VerfasserIn |
L. L. Sørensen, B. Jensen, R. N. Glud, D. F. McGinnis, M. K. Sejr, J. Sievers, D. H. Søgaard, J.-L. Tison, S. Rysgaard |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1994-0416
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| Digitales Dokument |
URL |
| Erschienen |
In: The Cryosphere ; 8, no. 3 ; Nr. 8, no. 3 (2014-05-12), S.853-866 |
| Datensatznummer |
250116151
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| Publikation (Nr.) |
 copernicus.org/tc-8-853-2014.pdf |
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| Zusammenfassung |
| We suggest the application of a flux parameterization commonly used over
terrestrial areas for calculation of CO2 fluxes over sea ice surfaces.
The parameterization is based on resistance analogy. We present a concept
for parameterization of the CO2 fluxes over sea ice suggesting to use
properties of the atmosphere and sea ice surface that can be measured or
calculated on a routine basis. Parameters, which can be used in the
conceptual model, are analysed based on data sampled from a seasonal fast-ice area,
and the different variables influencing the exchange of CO2
between the atmosphere and ice are discussed. We found the flux to be small
during the late winter with fluxes in both directions. Not surprisingly we
find that the resistance across the surface controls the fluxes and detailed
knowledge of the brine volume and carbon chemistry within the brines as well
as knowledge of snow cover and carbon chemistry in the ice are essential to
estimate the partial pressure of pCO2 and CO2 flux. Further
investigations of surface structure and snow cover and driving parameters
such as heat flux, radiation, ice temperature and brine processes are
required to adequately parameterize the surface resistance. |
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