Dust and sea salt variability in central East Antarctica (Dome C) over the last 45 kyrs and its implications for southern high-latitude climate

Details Dust and sea salt variability in central East Antarctica (Dome C) over the last 45 kyrs and its implications for southern high-latitude climate Dust and sea salt variability in central East Antarctica (Dome C) over the last 45 kyrs and its implications for southern high-latitude climate

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29t..24r&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 20, pp. 24-1, CiteID 1963, DOI 10.1029/2002GL015186

Physics

23

Meteorology And Atmospheric Dynamics: Paleoclimatology, Global Change: Climate Dynamics (3309), Information Related To Geographic Region: Antarctica, Atmospheric Composition And Structure: Troposphere-Constituent Transport And Chemistry

Scientific paper

A detailed record of non-sea-salt calcium, a proxy for dust, and sea-salt sodium, a proxy for sea salt, covering the last 45 kyr is presented. It shows that in the first part of the transition from the last glacial period to the Holocene (18-15 kyr BP), the changes in dust flux mainly reflect changes at the dust source, namely vegetation cover and local climate. The changes in the later part of the transition (12-11 kyr BP) are similar in extent to the changes seen in sea salt and most likely reflect a reorganization of the atmospheric circulation. During the last glacial period, considerable variation of dust but not of sea salt is observed, pointing to climatic changes in Patagonia, the main dust source for Dome C. A comparison of the glacial records from Dome C and Taylor Dome suggests that similar influences controlled aerosol input at both sites during this period.

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