Long-term summer temperature variations in the Pyrenees from detrended stable carbon isotopes

Esper, Jan; Konter, Oliver; Krusic, Paul J.; Saurer, Matthias; Holzkämper, Steffen; Büntgen, Ulf (2015). Long-term summer temperature variations in the Pyrenees from detrended stable carbon isotopes. Geochronometria, 42(1), pp. 53-59. Institute of Physics. Silesian University of Technology 10.1515/geochr-2015-0006

[img]
Preview
Text
Esper_2015_Geochron.pdf - Published Version
Available under License Creative Commons: Attribution-Noncommercial-No Derivative Works (CC-BY-NC-ND).

Download (889kB) | Preview

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 δ13C 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 δ13C data. Results indicate that late 20th century warming has not been unique within the context of the past 750 years. Our reconstruction contains greater am-plitude 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 δ13C 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 de-rived from traditional tree-ring parameters.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)
08 Faculty of Science > Other Institutions > Teaching Staff, Faculty of Science

UniBE Contributor:

Büntgen, Ulf

Subjects:

500 Science > 530 Physics
500 Science > 550 Earth sciences & geology

ISSN:

1733-8387

Publisher:

Institute of Physics. Silesian University of Technology

Language:

English

Submitter:

Monika Wälti-Stampfli

Date Deposited:

29 Jul 2015 17:07

Last Modified:

29 Jul 2015 17:07

Publisher DOI:

10.1515/geochr-2015-0006

BORIS DOI:

10.7892/boris.70593

URI:

https://boris.unibe.ch/id/eprint/70593

Actions (login required)

Edit item Edit item
Provide Feedback