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| Titel |
Stable water isotopes of precipitation and firn cores from the northern Antarctic Peninsula region as a proxy for climate reconstruction |
| VerfasserIn |
F. Fernandoy, H. Meyer, M. Tonelli |
| 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 ; 6, no. 2 ; Nr. 6, no. 2 (2012-03-22), S.313-330 |
| Datensatznummer |
250003480
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| Publikation (Nr.) |
 copernicus.org/tc-6-313-2012.pdf |
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| Zusammenfassung |
| In order to investigate the climate variability in the northern Antarctic Peninsula region, this paper focuses on the relationship between stable
isotope content of precipitation and firn, and main meteorological variables
(air temperature, relative humidity, sea surface temperature, and sea ice
extent). Between 2008 and 2010, we collected precipitation samples and
retrieved firn cores from several key sites in this region. We conclude that
the deuterium excess oscillation represents a robust indicator of the
meteorological variability on a seasonal to sub-seasonal scale. Low absolute
deuterium excess values and the synchronous variation of both deuterium
excess and air temperature imply that the evaporation of moisture occurs in
the adjacent Southern Ocean. The δ18O-air temperature relationship is
complicated and significant only at a (multi)seasonal scale. Backward
trajectory calculations show that air-parcels arriving at the region during
precipitation events predominantly originate at the South Pacific Ocean and
Bellingshausen Sea. These investigations will be used as a calibration for
ongoing and future research in the area, suggesting that appropriate
locations for future ice core research are located above 600 m a.s.l. We
selected the Plateau Laclavere, Antarctic Peninsula as the most promising
site for a deeper drilling campaign. |
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