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Atmospheric drying as the main driver of dramatic glacier wastage in the southern Indian Ocean

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Rinterknecht_2016_SR_GlacierWastage_CC.pdf (1.158Mb)
Date
01/09/2016
Author
Favier, V.
Verfaillie, D.
Berthier, E.
Menegoz, M.
Jomelli, V.
Kay, J. E.
Ducret, L.
Malbéteau, Y.
Brunstein, D.
Gallée, H.
Park, Y. -H.
Rinterknecht, V.
Keywords
GE Environmental Sciences
GB Physical geography
General
3rd-DAS
SDG 13 - Climate Action
Metadata
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Abstract
The ongoing retreat of glaciers at southern sub-polar latitudes is particularly rapid and widespread. Akin to northern sub-polar latitudes, this retreat is generally assumed to be linked to warming. However, no long-term and well-constrained glacier modeling has ever been performed to confirm this hypothesis. Here, we model the Cook Ice Cap mass balance on the Kerguelen Islands (Southern Indian Ocean, 49°S) since the 1850s. We show that glacier wastage during the 2000s in the Kerguelen was among the most dramatic on Earth. We attribute 77% of the increasingly negative mass balance since the 1960s to atmospheric drying associated with a poleward shift of the mid-latitude storm track. Because precipitation modeling is very challenging for the current generation of climate models over the study area, models incorrectly simulate the climate drivers behind the recent glacier wastage in the Kerguelen. This suggests that future glacier wastage projections should be considered cautiously where changes in atmospheric circulation are expected.
Citation
Favier , V , Verfaillie , D , Berthier , E , Menegoz , M , Jomelli , V , Kay , J E , Ducret , L , Malbéteau , Y , Brunstein , D , Gallée , H , Park , Y -H & Rinterknecht , V 2016 , ' Atmospheric drying as the main driver of dramatic glacier wastage in the southern Indian Ocean ' , Scientific Reports , vol. 6 , 32396 . https://doi.org/10.1038/srep32396
Publication
Scientific Reports
Status
Peer reviewed
DOI
https://doi.org/10.1038/srep32396
ISSN
2045-2322
Type
Journal article
Rights
© The Author(s) 2016. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
Description
This study was funded by IPEV-1048 GLACIOCLIM-KESAACO and LEFE-INSU KCRuMBLE programs, and the Agence Nationale de la Recherche through contract ANR-14-CE01-0001-01 (ASUMA).
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/9510

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