Physics
Scientific paper
Aug 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30oclm2p&link_type=abstract
Geophysical Research Letters, Volume 30, Issue 15, pp. CLM 2-1, CiteID 1787, DOI 10.1029/2003GL017589
Physics
15
Global Change: Climate Dynamics (3309), Meteorology And Atmospheric Dynamics: Paleoclimatology, Oceanography: General: Climate And Interannual Variability (3309)
Scientific paper
We evaluate the importance of high-resolution proxies for boreal winter (October to March) and summer (April to September) European and North Atlantic temperature reconstructions. Multiple regression, backward elimination and cross-validation techniques are used to achieve this goal. The analysis considers natural proxies and synthetic ``pseudo-documentary indices''. The results suggest that the most valuable predictors for European winter temperature are documentary-based indices, while tree-rings performed best for the warm season. It was also shown that the temperature signal in a speleothem from Scotland may be used for further winter and summer temperature reconstructions over parts of the Atlantic Ocean. This study represents a step towards the optimal selection of proxies which will improve temperature reconstructions.
Luterbacher Juerg
Pauling A.
Wanner Heinz
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