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Ice core evidence for a very tight link between North Atlantic and east Asian glacial climate
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2007 (English)In: GEOPHYSICAL RESEARCH LETTERS, Vol. 34, no L03706Article in journal (Refereed) Published
Abstract [en]

Corresponding millennial-scale climate changes have

been reported from the North Atlantic region and from east

Asia for the last glacial period on independent timescales

only. To assess their degree of synchrony we suggest

interpreting Greenland ice core dust parameters as proxies

for the east Asian monsoon systems. This allows comparing

North Atlantic and east Asian climate on the same timescale

in high resolution ice core data without relative dating

uncertainties. We find that during Dansgaard-Oeschger

events North Atlantic region temperature and east Asian

storminess were tightly coupled and changed synchronously

within 5–10 years with no systematic lead or lag, thus

providing instantaneous climatic feedback. The tight link

between North Atlantic and east Asian glacial climate could

have amplified changes in the northern polar cell to larger

scales. We further find evidence for an early onset of a

Younger Dryas-like event in continental Asia, which gives

evidence for heterogeneous climate change within east Asia

during the last deglaciation.

Place, publisher, year, edition, pages
2007. Vol. 34, no L03706
Keyword [en]
climate, ice cores, Greenland
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-14697DOI: doi:10.1029/2006GL027876ISI: 000244201900003OAI: oai:DiVA.org:su-14697DiVA: diva2:181217
Available from: 2008-10-24 Created: 2008-10-24 Last updated: 2011-01-11Bibliographically approved

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Department of Physical Geography and Quaternary Geology
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