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LONG-TERM SUMMER TEMPERATURE VARIATIONS IN THE PYRENEES FROM DETRENDED STABLE CARBON ISOTOPES
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
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Number of Authors: 6
2015 (English)In: Geochronometria, ISSN 1733-8387, E-ISSN 1897-1695, Vol. 42, no 1, 53-59 p.Article in journal (Refereed) Published
Abstract [en]

Substantial effort has recently been put into the development of climate reconstructions from tree-ring stable carbon isotopes, though the interpretation of long-term trends retained in such timeseries remains challenging. Here we use detrended delta C-13 measurements in Pinus uncinata tree-rings, from the Spanish Pyrenees, to reconstruct decadal variations in summer temperature back to the 13th century. The June-August temperature signal of this reconstruction is attributed using decadally as well as annually resolved, 20th century delta C-13 data. Results indicate that late 20th century warming has not been unique within the context of the past 750 years. Our reconstruction contains greater amplitude than previous reconstructions derived from traditional tree-ring density data, and describes particularly cool conditions during the late 19th century. Some of these differences, including early warm periods in the 14th and 17th centuries, have been retained via d13C timeseries detrending - a novel approach in tree-ring stable isotope chronology development. The overall reduced variance in earlier studies points to an underestimation of pre-instrumental summer temperature variability derived from traditional tree-ring parameters.

Place, publisher, year, edition, pages
2015. Vol. 42, no 1, 53-59 p.
Keyword [en]
Climate change, paleoclimatology, stable isotope geochemistry, tree-rings, Europe
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-119033DOI: 10.1515/geochr-2015-0006ISI: 000355584200005OAI: oai:DiVA.org:su-119033DiVA: diva2:843036
Available from: 2015-07-24 Created: 2015-07-24 Last updated: 2017-12-04Bibliographically approved

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Krusic, Paul J.Holzkämper, Steffen
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CiteExportLink to record
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