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| Titel |
A prognostic model of the sea-ice floe size and thickness distribution |
| VerfasserIn |
C. Horvat, E. Tziperman |
| 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 ; 9, no. 6 ; Nr. 9, no. 6 (2015-11-18), S.2119-2134 |
| Datensatznummer |
250116870
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| Publikation (Nr.) |
 copernicus.org/tc-9-2119-2015.pdf |
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| Zusammenfassung |
| Sea ice exhibits considerable seasonal and longer-term variations in extent,
concentration, thickness, and age, and is characterized by a complex and
continuously changing distribution of floe sizes and thicknesses,
particularly in the marginal ice zone (MIZ). Models of sea ice used in
current climate models keep track of its concentration and of the
distribution of ice thicknesses, but do not account for the floe size
distribution and its potential effects on air–sea exchange and sea-ice
evolution. Accurately capturing sea-ice variability in climate models may
require a better understanding and representation of the distribution of floe
sizes and thicknesses. We develop and demonstrate a model for the evolution
of the joint sea-ice floe size and thickness distribution that depends on
atmospheric and oceanic forcing fields. The model accounts for effects due to
multiple processes that are active in the MIZ and seasonal ice zones:
freezing and melting along the lateral side and base of floes, mechanical
interactions due to floe collisions (ridging and rafting), and sea-ice
fracture due to wave propagation in the MIZ. The model is then examined and
demonstrated in a series of idealized test cases. |
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