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| Titel |
Siple Dome shallow ice cores: a study in coastal dome microclimatology |
| VerfasserIn |
T. R. Jones  , J. W. C. White, T. Popp |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1814-9324
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| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 10, no. 3 ; Nr. 10, no. 3 (2014-06-26), S.1253-1267 |
| Datensatznummer |
250116990
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| Publikation (Nr.) |
 copernicus.org/cp-10-1253-2014.pdf |
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| Zusammenfassung |
| Ice cores at Siple Dome, West Antarctica, receive the majority of their
precipitation from Pacific Ocean moisture sources. Pacific climate patterns,
particularly the El Niño–Southern Oscillation (ENSO) and the Southern
Annular Mode (SAM), affect local temperature, atmospheric circulation, snow
accumulation, and water isotope signals at Siple Dome. We examine borehole
temperatures, accumulation, and water isotopes from a number of shallow ice
cores recovered from a 60 km north–south transect of the dome. The data
reveal spatial gradients partly explained by orographic uplift, as well as
microclimate effects that are expressed differently on the Pacific and inland
flanks. Our analyses suggest that while an ENSO and SAM signal are evident at
Siple Dome, differences in microclimate and possible postdepositional
movement of snow makes climate reconstruction problematic, a conclusion which
should be considered at other West Antarctic coastal dome locations. |
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