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Shrubs shed light on 20th century Greenland Ice Sheet melting

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dc.title Shrubs shed light on 20th century Greenland Ice Sheet melting en
dc.contributor.author Buras, Allan
dc.contributor.author Lehejček, Jiří
dc.contributor.author Michalová, Zuzana
dc.contributor.author Morrissey, Robert C.
dc.contributor.author Svoboda, Miroslav
dc.contributor.author Wilmking, Martin
dc.relation.ispartof Boreas
dc.identifier.issn 0300-9483 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2017
utb.relation.volume 46
utb.relation.issue 4
dc.citation.spage 667
dc.citation.epage 677
dc.type article
dc.language.iso en
dc.publisher Blackwell Publishing Inc.
dc.identifier.doi 10.1111/bor.12244
dc.relation.uri http://onlinelibrary.wiley.com/doi/10.1111/bor.12244/full
dc.description.abstract The Greenland Ice Sheet (GrIS) is a key element of the global climate system and thus knowledge about its melting in the past is desirable. However, GrIS-melt records only date back until 1979 and climate data based reconstructions covering the 20th century differ with respect to absolute values. To extend our knowledge about the Greenland Ice Sheet we examined the potential of shrub ring-widths and wood-anatomy as proxies for GrIS-melt. We found significant correlations between shrub cell-wall thickness and regional melt derived from passive microwave satellite brightness for 7% of the total GrIS area. A respective transfer function calibrated over the period 1979 to 2007 successfully passed model calibration-verification tests and explained 42% of GrIS-melt variability. Consequently, the first GrIS-melt reconstruction based on shrub wood-anatomy covering the period 1909 to 2012 is presented and compared against two temperature-based reconstructions. For the period prior to 1930 the new reconstruction contrasts with existing literature but generally confirms that most recent record melt rates are amongst the highest since the early 20th century. We discuss the sensitivity of shrubs to several influencing factors besides summer temperature as possible reason for the observed differences and highlight the potential of using shrubs as multi-parameter proxies within a network to increase our knowledge about 20th century Greenland Ice Sheet dynamics. © 2017 Collegium Boreas. Published by John Wiley & Sons Ltd en
utb.faculty Faculty of Logistics and Crisis Management
dc.identifier.uri http://hdl.handle.net/10563/1007545
utb.identifier.obdid 43876827
utb.identifier.scopus 2-s2.0-85017389242
utb.identifier.wok 000412097800005
utb.source j-scopus
dc.date.accessioned 2018-01-15T16:31:25Z
dc.date.available 2018-01-15T16:31:25Z
dc.description.sponsorship 20154304, CZU, Česká Zemědělská Univerzita v Praze
dc.description.sponsorship Virtual Institute of Integrated Climate and Landscape Evolution Analysis - ICLEA - of the Helmholtz Association [VH-VI-415]; Internal Grant Agency of Czech University of Life Sciences Prague [20154304]; INTERACT under the European Community's Seventh Framework Programme [262693]
utb.contributor.internalauthor Lehejček, Jiří
utb.fulltext.affiliation ALLAN BURAS, JIŘÍ LEHEJČEK, ZUZANA MICHALOVÁ, ROBERT C. MORRISSEY, MIROSLAV SVOBODA AND MARTIN WILMKING Allan Buras* (allan@buras.eu) and Martin Wilmking, Landscape Ecology and Ecosystem Dynamics, Institute for Botany and Landscape Ecology, University of Greifswald, Soldmannstraße 15, Greifswald 17487, Germany, *Present address: Ecoclimatology, Technische Universit€ at M€ unchen, Hans-Carl-von-Carlowitz-Platz 2, Freising 85354, Germany; Jiří Lehejček**, Zuzana Michalová, Robert C. Morrissey and Miroslav Svoboda, Department of Forest Ecology, Faculty of Forestry and Wood Science, Czech University of Life Sciences in Prague, Kamýcká 1176, Prague 6 – Suchdol, the Czech Republic, **Present address: Department of Environmental Security, Faculty of Logistics and Crisis Management, Tomas Bata University in Zlín, nám T.G. Masaryka 5555, 760 01 Zlín, the Czech Republic
utb.fulltext.dates received 27th October 2016, accepted 22nd February 2017
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utb.fulltext.sponsorship This study is a contribution to the Virtual Institute of Integrated Climate and Landscape Evolution Analysis – ICLEA – of the Helmholtz Association, grant number VH-VI-415. We would like to thank the Internal Grant Agency of Czech University of Life Sciences Prague, Project No. 20154304 for its material support of the study. The research also received support (logistics and access to the Kobbefjord research station) from INTERACT (grant agreement No. 262693), under the European Community’s Seventh Framework Programme. We thank station manager Katrine Randrup as well as Daniel Nývlt and Petra Polická a for their help with fieldwork. We are grateful for valuable advice from Elisabeth Martinez, Jan A. Piotrowski and two anonymous reviewers on how to improve the manuscript.
utb.scopus.affiliation Landscape Ecology and Ecosystem Dynamics, Institute for Botany and Landscape Ecology, University of Greifswald, Soldmannstraße 15, Greifswald, Germany; Department of Forest Ecology, Faculty of Forestry and Wood Science, Czech University of Life Sciences in Prague, Kamýcká 1176, Prague 6 – Suchdol, Czech Republic; Ecoclimatology, Technische Universität München, Hans-Carl-von-Carlowitz-Platz 2, Freising, Germany; Department of Environmental Security, Faculty of Logistics and Crisis Management, Tomas Bata University in Zlín, nám T.G. Masaryka 5555, Zlín, Czech Republic
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