Physics
Scientific paper
Jul 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3413707c&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 13, CiteID L13707
Physics
10
Global Change: Climate Variability (1635, 3305, 3309, 4215, 4513), Paleoceanography: Interhemispheric Phasing, Paleoceanography: Sea Surface Temperature
Scientific paper
Comparison of ice cores from Greenland and Antarctica shows an asynchronous two-step warming at these high latitudes during the Last Termination. However, the question whether this asynchrony extends to lower latitudes is unclear mainly due to the scarcity of paleorecords from the Southern Hemisphere. New data from a marine core collected off South Australia (~36°S) allows a detailed reconstruction of sea-surface temperatures over the Last Termination. This confirms the existence of an Antarctic-type deglacial pattern and shows no indication of cooling associated with the Northern Hemisphere YD event. The SST record also provides a new comparison with the more extensive paleoclimatic data available from continental Australia. This shows a strong climatic link between onshore and offshore records for Australia and to Southern Hemisphere paleorecords. We also show a progressive SST drop over the last ~6.5 kyr not seen before for the Australian region.
Calvo Eva
de Deckker Patrick
Logan Graham A.
Pelejero Carles
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