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	<journal>
		<journal_title>Climate of the Past</journal_title>
		<journal_url>www.clim-past.net</journal_url>
		<issn>1814-9324</issn>
		<eissn>1814-9332</eissn>
		<volume_number>6</volume_number>
		<issue_number>3</issue_number>
		<publication_year>2010</publication_year>
	</journal>
	<doi>10.5194/cp-6-295-2010</doi>
	<article_url>http://www.clim-past.net/6/295/2010/</article_url>
	<abstract_html>http://www.clim-past.net/6/295/2010/cp-6-295-2010.html</abstract_html>
	<fulltext_pdf>http://www.clim-past.net/6/295/2010/cp-6-295-2010.pdf</fulltext_pdf>
	<start_page>295</start_page>
	<end_page>303</end_page>
	<publication_date>2010-05-05</publication_date>
	<article_title content_type="html">Patterns of millennial variability over the last 500 ka</article_title>
	<authors>
		<author numeration="1" affiliations="1">
			<name>M. Siddall</name>
		</author>
		<author numeration="2" affiliations="2">
			<name>E. J. Rohling</name>
		</author>
		<author numeration="3" affiliations="3">
			<name>T. Blunier</name>
		</author>
		<author numeration="4" affiliations="4">
			<name>R. Spahni</name>
		</author>
	</authors>
	<affiliations>
		<affiliation numeration="1" content_type="html">Department of Earth Science, University of Bristol, Bristol, UK</affiliation>
		<affiliation numeration="2" content_type="html">National Oceanography Centre, Southampton, Southampton, UK</affiliation>
		<affiliation numeration="3" content_type="html">Centre for Ice &amp; Climate, Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark</affiliation>
		<affiliation numeration="4" content_type="html">Climate and Environmental Physics and Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland</affiliation>
	</affiliations>
	<abstract content_type="html">Millennial variability is a robust feature of many paleoclimate records, at
least throughout the last several glacial cycles. Here we use the mean
signal from Antarctic climate events 1 to 4 to probe the EPICA Dome C
temperature proxy reconstruction through the last 500 ka for similar
millennial-scale events. We find that clusters of millennial events occurred
in a regular fashion over half of the time during this with a mean
recurrence interval of 21 kyr. We find that there is no consistent link
between ice-rafted debris deposition and millennial variability. Instead we
speculate that changes in the zonality of atmospheric circulation over the
North Atlantic form a viable alternative to freshwater release from icebergs
as a trigger for millennial variability. We suggest that millennial changes
in the zonality of atmospheric circulation over the North Atlantic are
linked to precession via sea-ice feedbacks and that this relationship is
modified by the presence of the large, Northern Hemisphere ice sheets during
glacial periods.</abstract>
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</article>

