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Annual variability of mean July air temperature: was the variability higher during warmer periods of the past?

English title Annual variability of mean July air temperature: was the variability higher during warmer periods of the past?
Applicant Larocque Isabelle
Number 131177
Funding scheme Marie Heim-Voegtlin grants
Research institution Oeschger-Zentrum für Klimaforschung Universität Bern
Institution of higher education University of Berne - BE
Main discipline Palaeontology
Start/End 01.05.2010 - 31.07.2010
Approved amount 16'814.00
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All Disciplines (2)

Discipline
Palaeontology
Hydrology, Limnology, Glaciology

Keywords (4)

variability; chironomids; paleolimnology; temperature reconstruction

Lay Summary (English)

Lead
Lay summary
Chironomids (non-biting midges) preserved in the sediment of Seebergsee (46°37°N, 7°28°E) will be used to infer past mean July air temperatures for the past 150 years. Two models of calibration will be used: a spatial calibration using 101 lakes in Switzerland (see Larocque et al. 2009) and a calibration in time based on instrumental data. The three months of funding will allow the validation of the technique and publication of two papers. However, the larger goal of this project would be to reconstruct temperature over the last millennium, at high temporal resolution, and determine if, as models predict, the climate variability was higher during warmer periods of the past.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Employees

Associated projects

Number Title Start Funding scheme
118600 Interannual variability in summer temperature through the last 3300 years as recorded by chironomids (non-biting midges) in the varved sediment of Lake Silvaplana 01.05.2008 Marie Heim-Voegtlin grants
118600 Interannual variability in summer temperature through the last 3300 years as recorded by chironomids (non-biting midges) in the varved sediment of Lake Silvaplana 01.05.2008 Marie Heim-Voegtlin grants

Abstract

To better understand climate variability during warmer and colder of the past, chironomids (non-biting midges) preserved in the sediment of lake Seebergsee will be used to infer mean July air temperature. This project will validate the climate models by determining if the annual variability was higher during warmer periods of the past.
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