Linear response of the Greenland ice sheet's tidewater glacier terminus positions to climate
<jats:title>Abstract</jats:title><jats:p>Gaining knowledge of tidewater glacier (TWG) margin evolution, solid ice flux and their responses to climate over large spatio-temporal scales provides valuable context for the projection of future Greenland ice sheet (GrIS) change. Although...
Published in: | Journal of Glaciology |
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Cambridge University Press (CUP)
2021
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ftunivliverpool:oai:livrepository.liverpool.ac.uk:3117650 2023-05-15T16:21:14+02:00 Linear response of the Greenland ice sheet's tidewater glacier terminus positions to climate Fahrner, Dominik Lea, James M Brough, Stephen Mair, Douglas WF Abermann, Jakob 2021 text http://livrepository.liverpool.ac.uk/3117650/ https://doi.org/10.1017/jog.2021.13 http://livrepository.liverpool.ac.uk/3117650/6/fahrner-et-al-2021-linear-response-of-the-greenland-ice-sheets-tidewater-glacier-terminus-positions-to-climate.pdf en eng Cambridge University Press (CUP) http://livrepository.liverpool.ac.uk/3117650/6/fahrner-et-al-2021-linear-response-of-the-greenland-ice-sheets-tidewater-glacier-terminus-positions-to-climate.pdf Fahrner, Dominik orcid:0000-0002-7895-1557 , Lea, James M orcid:0000-0003-1885-0858 , Brough, Stephen orcid:0000-0002-6581-6081 , Mair, Douglas WF orcid:0000-0001-7009-5461 and Abermann, Jakob (2021) Linear response of the Greenland ice sheet's tidewater glacier terminus positions to climate. JOURNAL OF GLACIOLOGY, 67 (262). pp. 193-203. Article NonPeerReviewed 2021 ftunivliverpool https://doi.org/10.1017/jog.2021.13 2023-01-20T00:03:03Z <jats:title>Abstract</jats:title><jats:p>Gaining knowledge of tidewater glacier (TWG) margin evolution, solid ice flux and their responses to climate over large spatio-temporal scales provides valuable context for the projection of future Greenland ice sheet (GrIS) change. Although studies of sector-wide responses of TWGs exist, studies at an ice-sheet-wide scale have only just become feasible. Here, we present a dataset of 224 annual TWG margins for 1984–2017 (<jats:italic>n</jats:italic>= 3801), showing that averaged over regional scales, normalised terminus change is linear. Regionally linear retreat trends were identified across most sectors of the GrIS starting in the mid-1990s, although in contrast to previous studies, the northeastern sector is shown to have experienced sustained retreat since the mid-1980s. Through cointegration analyses, individual glaciers are shown to have differing sensitivities to potential climate drivers, though on a sector-wide scale the northwest and southeast are shown to be especially sensitive to annual sea surface temperature and June–July–August air temperature, respectively. Although 92% of the analysed glaciers experience retreat across the GrIS, observed increases in absolute flux for the entire ice sheet can be explained by changes in just 11 of these TWGs.</jats:p> Article in Journal/Newspaper glacier Greenland Ice Sheet Journal of Glaciology Tidewater The University of Liverpool Repository Greenland Journal of Glaciology 67 262 193 203 |
institution |
Open Polar |
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The University of Liverpool Repository |
op_collection_id |
ftunivliverpool |
language |
English |
description |
<jats:title>Abstract</jats:title><jats:p>Gaining knowledge of tidewater glacier (TWG) margin evolution, solid ice flux and their responses to climate over large spatio-temporal scales provides valuable context for the projection of future Greenland ice sheet (GrIS) change. Although studies of sector-wide responses of TWGs exist, studies at an ice-sheet-wide scale have only just become feasible. Here, we present a dataset of 224 annual TWG margins for 1984–2017 (<jats:italic>n</jats:italic>= 3801), showing that averaged over regional scales, normalised terminus change is linear. Regionally linear retreat trends were identified across most sectors of the GrIS starting in the mid-1990s, although in contrast to previous studies, the northeastern sector is shown to have experienced sustained retreat since the mid-1980s. Through cointegration analyses, individual glaciers are shown to have differing sensitivities to potential climate drivers, though on a sector-wide scale the northwest and southeast are shown to be especially sensitive to annual sea surface temperature and June–July–August air temperature, respectively. Although 92% of the analysed glaciers experience retreat across the GrIS, observed increases in absolute flux for the entire ice sheet can be explained by changes in just 11 of these TWGs.</jats:p> |
format |
Article in Journal/Newspaper |
author |
Fahrner, Dominik Lea, James M Brough, Stephen Mair, Douglas WF Abermann, Jakob |
spellingShingle |
Fahrner, Dominik Lea, James M Brough, Stephen Mair, Douglas WF Abermann, Jakob Linear response of the Greenland ice sheet's tidewater glacier terminus positions to climate |
author_facet |
Fahrner, Dominik Lea, James M Brough, Stephen Mair, Douglas WF Abermann, Jakob |
author_sort |
Fahrner, Dominik |
title |
Linear response of the Greenland ice sheet's tidewater glacier terminus positions to climate |
title_short |
Linear response of the Greenland ice sheet's tidewater glacier terminus positions to climate |
title_full |
Linear response of the Greenland ice sheet's tidewater glacier terminus positions to climate |
title_fullStr |
Linear response of the Greenland ice sheet's tidewater glacier terminus positions to climate |
title_full_unstemmed |
Linear response of the Greenland ice sheet's tidewater glacier terminus positions to climate |
title_sort |
linear response of the greenland ice sheet's tidewater glacier terminus positions to climate |
publisher |
Cambridge University Press (CUP) |
publishDate |
2021 |
url |
http://livrepository.liverpool.ac.uk/3117650/ https://doi.org/10.1017/jog.2021.13 http://livrepository.liverpool.ac.uk/3117650/6/fahrner-et-al-2021-linear-response-of-the-greenland-ice-sheets-tidewater-glacier-terminus-positions-to-climate.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Ice Sheet Journal of Glaciology Tidewater |
genre_facet |
glacier Greenland Ice Sheet Journal of Glaciology Tidewater |
op_relation |
http://livrepository.liverpool.ac.uk/3117650/6/fahrner-et-al-2021-linear-response-of-the-greenland-ice-sheets-tidewater-glacier-terminus-positions-to-climate.pdf Fahrner, Dominik orcid:0000-0002-7895-1557 , Lea, James M orcid:0000-0003-1885-0858 , Brough, Stephen orcid:0000-0002-6581-6081 , Mair, Douglas WF orcid:0000-0001-7009-5461 and Abermann, Jakob (2021) Linear response of the Greenland ice sheet's tidewater glacier terminus positions to climate. JOURNAL OF GLACIOLOGY, 67 (262). pp. 193-203. |
op_doi |
https://doi.org/10.1017/jog.2021.13 |
container_title |
Journal of Glaciology |
container_volume |
67 |
container_issue |
262 |
container_start_page |
193 |
op_container_end_page |
203 |
_version_ |
1766009246276648960 |