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Little Ice Age Climate Reconstruction from Ensemble Reanalysis of Alpine Glacier Fluctuations : Volume 7, Issue 5 (22/10/2013)

By Lüthi, M. P.

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Book Id: WPLBN0004022930
Format Type: PDF Article :
File Size: Pages 29
Reproduction Date: 2015

Title: Little Ice Age Climate Reconstruction from Ensemble Reanalysis of Alpine Glacier Fluctuations : Volume 7, Issue 5 (22/10/2013)  
Author: Lüthi, M. P.
Volume: Vol. 7, Issue 5
Language: English
Subject: Science, Cryosphere, Discussions
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Lüthi, M. P. (2013). Little Ice Age Climate Reconstruction from Ensemble Reanalysis of Alpine Glacier Fluctuations : Volume 7, Issue 5 (22/10/2013). Retrieved from http://nook-library.net/


Description
Description: VAW Glaciology, ETH Zürich, 8093 Zürich, Switzerland. Mountain glaciers sample a combination of climate parameters – temperature, precipitation and radiation – by their rate of volume accumulation and loss. Flow dynamics acts as transfer function which maps volume changes to a length response of the glacier terminus. Long histories of terminus positions have been assembled for several glaciers in the Alps. Here I analyze terminus position histories from an ensemble of seven glaciers in the Alps with a macroscopic model of glacier dynamics to derive a history of glacier equilibrium line altitude (ELA) for the time span 400–2010 C.E. The resulting climatic reconstruction depends only on records of glacier variations. The reconstructed ELA history is similar to recent reconstructions of Alpine summer temperature and Atlantic Meridional Oscillation (AMO) index. Most reconstructed low-ELA periods coincide with large explosive volcano eruptions, hinting to mass balance reduction by volcanic radiative cooling. The glacier advances during the LIA, and the retreat after 1860 are thus explained by temperature and volcanic cooling alone.

Summary
Little Ice Age climate reconstruction from ensemble reanalysis of Alpine glacier fluctuations

Excerpt
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