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| Titel |
Stable climate and surface mass balance in Svalbard over 1979-2013 despite the Arctic warming |
| VerfasserIn |
C. Lang, X. Fettweis, M. Erpicum |
| 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. 1 ; Nr. 9, no. 1 (2015-01-08), S.83-101 |
| Datensatznummer |
250116738
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| Publikation (Nr.) |
 copernicus.org/tc-9-83-2015.pdf |
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| Zusammenfassung |
| With the help of the regional climate model MAR (Modèle Atmosphérique
Régional) forced by the ERA-Interim reanalysis (MARERA) and the MIROC5
(Model for Interdisciplinary Research on Climate) global
model (MARMIROC5) from the CMIP5 (Coupled Model Intercomparison Project) database, we have
modelled the climate and surface mass balance of Svalbard at
a 10 km resolution over 1979–2013. The integrated total surface mass balance
(SMB)
over Svalbard modelled by MARERA is negative
(−1.6 Gt yr−1) with a large interannual variability
(7.1 Gt) but, unlike over Greenland, there has been no acceleration of
the surface melt over the past 35 years because of the recent
change in atmospheric circulation bringing northwesterly flows in summer
over Svalbard, contrasting the recent observed Arctic
warming. However, in 2013, the atmospheric circulation changed to
a south–southwesterly flow over Svalbard causing record melt, SMB
(−20.4 Gt yr−1) and summer temperature. MIROC5 is
significantly colder than ERA-Interim over 1980–2005 but
MARMIROC5 is able to improve the near-surface MIROC5
results by simulating not significant SMB differences
with MARERA over 1980–2005. On the other hand, MIROC5 does not
represent the recent atmospheric circulation shift in summer and
induces in MARMIROC5 a significant trend of decreasing
SMB (−0.6 Gt yr−2) over 1980–2005. |
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