Open Access
The climate of North America during the past 2,000 years reconstructed from pollen data
TLDR
In this article, the temperature of the warmest month was reconstructed for the past 2000 years using 748 pollen sites from the North American Pollen Database using the Modern Analog Technique.Abstract:
Abstract The temperature of the warmest month was reconstructed for the past 2000 years using 748 pollen sites from the North American Pollen Database. The Modern Analog Technique was used to quantify paleoclimate conditions using a modern pollen database with calibration sites from across North America. Across North America, both the Medieval Warm Period (MWP) and Little Ice Age (LIA) were cooler than the present (AD 1961–1990). The MWP was warmer than the LIA over at least the boreal and eastern portions of the continent and perhaps across the continent. These reconstructed anomalies during the MWP and LIA are significant anomalies from the long-term neoglacial cooling. The atmospheric circulation was likely dominated by a poleward shift of the summer Subtropical High Pressure system in the North Atlantic during the MWP.read more
Citations
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Climate in Medieval time
TL;DR: In this article, the authors reviewed the evidence and concluded that although the High Medieval (1100 to 1200 A.D.) was warmer than subsequent centuries, it was not warmer than the late 20th century, and the warmest Medieval temperatures were not synchronous around the globe.
AMO-like Variations of Holocene Sea Surface Temperatures in the North Atlantic Ocean
TL;DR: In this paper, the long-term and centennial variations of Holocene SST in the North Atlantic demonstrate a basinwide mode that clearly resembles the AMO signal recorded during the recent instrumental period.
Développement de séries isotopiques et reconstitution de la température estivale du dernier millénaire à partir de tiges subfossiles du nord québécois.
TL;DR: In Section I. as mentioned in this paper, the authors present a Table of Tableaux, Table of Figures and Table of Abstractions, Section II. SYNTHÈSE......................................................................................................... 19 CHAPITRE
Dissertation
Mid- to Late Holocene environmental dynamics on the Yukon Coastal Plain and Herschel Island (Canada) – evidence from polygonal peatlands and lake sediment
TL;DR: In this article, the authors investigated the environmental impacts of moderate climatic oscillations during the mid- to late Holocene on the Yukon Coastal Plain, which is geographically and topographically isolated from the rest of the western Canadian Arctic.
Dissertation
Reconstitution des paléotempératures holocènes de la forêt boréale coniférienne de l'ouest du Québec basée sur une approche multi-indicateurs
TL;DR: In this article, the authors present an approach based on a multidisciplinary approach to the analysis of Chironomidae and pollen in the sediments of lacs retenus de l’ouest du Quebec.
References
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Climate Change 2013: The Physical Science Basis
Reinhard F. Stocker,Dahe Qin,Gian-Kasper Plattner,Melinda Tignor,S. D. Allen,J. Boschung,T Stocker,Gian-Kasper Plattner,Simon K. Allen,Alexander Nauels,Yu Xia,V. Bex,Pauline M. Midgley,Matthew Collins,Reto Knutti,Julie M. Arblaster,Jean-Louis Dufresne,Thierry Fichefet,Pierre Friedlingstein,Michael Wehner,Thomas F. Stocker,S. James Allen,P. M. Midgley,F. M. Midgley,TF Stocker,Stefan Allen,SG Allen +26 more
TL;DR: In this paper, a summary of issues to assist policymakers, a technical summary, and a list of frequently-asked questions are presented, with an emphasis on physical science issues.
Book
An Introduction to Applied Geostatistics
TL;DR: In this paper, Krigeage and continuite spatiale were used for interpolation of a variogramme with anisotropic interpolation reference record created on 2005-06-20, modified on 2011-09-01.
Journal ArticleDOI
IntCal04 terrestrial radiocarbon age calibration, 0-26 cal kyr BP
Paula J. Reimer,Michael Baillie,Edouard Bard,Alex Bayliss,J. Warren Beck,Chanda J H Bertrand,Paul G. Blackwell,Caitlin E. Buck,George S. Burr,K. B. Cutler,Paul E. Damon,R. Lawrence Edwards,Richard G. Fairbanks,Michael Friedrich,Thomas P. Guilderson,Alan G. Hogg,Konrad A Hughen,Bernd Kromer,Gerry McCormac,Sturt W. Manning,Christopher Bronk Ramsey,Ron W Reimer,Sabine Remmele,John Southon,Minze Stuiver,Sahra Talamo,Frederick W. Taylor,Johannes van der Plicht,Constanze E. Weyhenmeyer +28 more
TL;DR: In this paper, a new calibration curve for the conversion of radiocarbon ages to calibrated (cal) ages has been constructed and internationally ratified to replace IntCal98, which extended from 0-24 cal kyr BP (Before Present, 0 cal BP = AD 1950).
Journal ArticleDOI
Persistent Solar Influence on North Atlantic Climate During the Holocene
Gerard C. Bond,Bernd Kromer,Juerg Beer,Raimund Muscheler,Michael N. Evans,William J. Showers,Sharon Hoffmann,Rusty Lotti-Bond,Irka Hajdas,Georges Bonani +9 more
TL;DR: A solar forcing mechanism therefore may underlie at least the Holocene segment of the North Atlantic's “1500-year” cycle, potentially providing an additional mechanism for amplifying the solar signals and transmitting them globally.
Journal ArticleDOI
Causes of Climate Change Over the Past 1000 Years
TL;DR: A 21st-century global warming projection far exceeds the natural variability of the past 1000 years and is greater than the best estimate of global temperature change for the last interglacial.