Change search
ReferencesLink to record
Permanent link

Direct link
Decadal-scale autumn temperature reconstruction back to AD 1580 inferred from the varved sediments of Lake Silvaplana (southeastern Swiss Alps)
Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
2007 (English)In: Quaternary Research, ISSN 0033-5894, Vol. 68, no 2, 184-195 p.Article in journal (Refereed) Published
Abstract [en]

A quantitative high-resolution autumn (September-November) temperature reconstruction for the southeastern Swiss Alps back to AD 1580 is presented here. We used the annually resolved biogenic silica (diatoms) flux derived from the accurately dated and annually sampled sediments of Lake Silvaplana (46°27'N, 9°48'E, 1800 m a.s.1.). The biogenic silica flux smoothed by means of a 9-yr running mean was calibrated (r=0.70, p<0.01) against local instrumental temperature data (AD 1864-1949). The resulting reconstruction (±2 standard errors=±0.7 °C) indicates that autumns during the late Little Ice Age were generally cooler than they were during the 20th century. During the cold anomaly around AD 1600 and during the Maunder Minimum, however, the reconstructed autumn temperatures did not experience strong negative departures from the 20th-century mean. The warmest autumns prior to 1900 occurred around AD 1770 and 1820 (0.75 °C above the 20th-century mean). Our data agree closely with two other autumn temperature reconstructions for the Alps and for Europe that are based on documentary evidence and are completely unrelated to our data, revealing a very consistent picture over the centuries.

Place, publisher, year, edition, pages
2007. Vol. 68, no 2, 184-195 p.
URN: urn:nbn:se:umu:diva-20336OAI: diva2:208432
Available from: 2009-03-18 Created: 2009-03-18

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Bigler, Christian
By organisation
Ecology and Environmental Science
In the same journal
Quaternary Research

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 71 hits
ReferencesLink to record
Permanent link

Direct link