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Persistent Positive North Atlantic Oscillation Mode Dominated the Medieval Climate Anomaly
A 947-year-long multidecadal North Atlantic Oscillation reconstruction is presented and a persistent positive NAO is found during the Medieval Climate Anomaly to indicate a clear shift to weaker NAO conditions into the Little Ice Age (LIA). Expand
Low-Frequency Signals in Long Tree-Ring Chronologies for Reconstructing Past Temperature Variability
It is demonstrated that carefully selected tree-ring chronologies from 14 sites in the Northern Hemisphere (NH) extratropics can preserve such coherent large-scale, multicentennial temperature trends if proper methods of analysis are used. Expand
Temperature and precipitation variability in the European Alps since 1500
High-resolution temperature and precipitation variations and their seasonal extremes since 1500 are presented for the European Alps (43.25–48.25 °N and 4.25–16.25 °E). The spatial resolution of theExpand
Summer temperature variations in the European Alps, A.D. 755-2004
Abstract Annually resolved summer temperatures for the European Alps are described. The reconstruction covers the a.d. 755–2004 period and is based on 180 recent and historic larch [Larix deciduaExpand
The twentieth century was the wettest period in northern Pakistan over the past millennium
An annually resolved oxygen isotope record from tree-rings is presented, providing a millennial-scale reconstruction of precipitation variability in the high mountains of northern Pakistan, where the climatic signal originates mainly from winter precipitation, and is robust over ecologically different sites. Expand
2500 Years of European Climate Variability and Human Susceptibility
Reconstruction of tree ring–based reconstructions of central European summer precipitation and temperature variability over the past 2500 years may provide a basis for counteracting the recent political and fiscal reluctance to mitigate projected climate change. Expand
Ensemble reconstruction constraints on the global carbon cycle sensitivity to climate
The coupling of a probabilistic approach with an ensemble of proxy-based temperature reconstructions and pre-industrial CO2 data from three ice cores provides robust constraints for γ on the policy-relevant multi-decadal to centennial timescales, and quantification of γ is not only improved, but also likelihoods can be assigned, thereby providing a benchmark for future model simulations. Expand
Continental-scale temperature variability during the past two millennia
Past global climate changes had strong regional expression. To elucidate their spatio-temporal pattern, we reconstructed past temperatures for seven continental-scale regions during the past one toExpand
Tests of the RCS Method for Preserving Low-Frequency Variability in Long Tree-Ring Chronologies
To preserve multicentennial length variability in annual tree -ring chronologies, the Regional Curve Standardization (RCS) method calculates anomalies from a regionally common, non -climatic ageExpand
Orbital forcing of tree-ring data
Based on an analysis of maximum latewood density data from northern Scandinavia, along with published dendrochronological records, this study finds evidence that previous tree-ring-reliantExpand