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| Titel |
Arctic Ocean sea ice snow depth evaluation and bias sensitivity in CCSM |
| VerfasserIn |
B. A. Blazey, M. M. Holland, E. C. Hunke |
| 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 ; 7, no. 6 ; Nr. 7, no. 6 (2013-12-13), S.1887-1900 |
| Datensatznummer |
250085191
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| Publikation (Nr.) |
 copernicus.org/tc-7-1887-2013.pdf |
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| Zusammenfassung |
| Sea ice cover in the Arctic Ocean is a continued focus of attention. This
study investigates the impact of the snow overlying the sea ice in the
Arctic Ocean. The impact of snow depth biases in the Community Climate
System Model (CCSM) is shown to impact not only the sea ice, but also the
overall Arctic climate. Following the identification of seasonal biases
produced in CCSM simulations, the thermodynamic transfer through the snow–ice column
is perturbed to determine model sensitivity to these biases. This
study concludes that perturbations on the order of the observed biases
result in modification of the annual mean conductive flux through the snow–ice
column of 0.5 W m2 relative to an unmodified simulation. The
results suggest that the ice has a complex response to snow characteristics,
with ice of different thicknesses producing distinct reactions. Our results
indicate the importance of an accurate simulation of snow on the Arctic sea
ice. Consequently, future work investigating the impact of current
precipitation biases and missing snow processes, such as blowing snow,
densification, and seasonal changes, is warranted. |
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