Statistical EOF analysis of spatiotemporal glacier mass-balance variability:a case study of Mittivakkat Gletscher, SE Greenland
An Empirical Orthogonal Function (EOF) variance analysis was performed to map in detail the spatiotemporal variability in individual stake mass-balances (ba) on Mittivakkat Gletscher (MG) – in a region where at present five out of ~20.000 glaciers have mass-balance observations. The EOF analysis sug...
Published in: | Geografisk Tidsskrift-Danish Journal of Geography |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/48c79666-1ccc-46aa-b324-7e150fa0a8b8 2023-08-27T04:03:41+02:00 Statistical EOF analysis of spatiotemporal glacier mass-balance variability:a case study of Mittivakkat Gletscher, SE Greenland Mernild, Sebastian H. Beckerman, Andrew P. Knudsen, Niels Tvis Hasholt, Bent Yde, Jacob C. 2018 https://pure.au.dk/portal/da/publications/statistical-eof-analysis-of-spatiotemporal-glacier-massbalance-variability(48c79666-1ccc-46aa-b324-7e150fa0a8b8).html https://doi.org/10.1080/00167223.2017.1386581 eng eng info:eu-repo/semantics/restrictedAccess Mernild , S H , Beckerman , A P , Knudsen , N T , Hasholt , B & Yde , J C 2018 , ' Statistical EOF analysis of spatiotemporal glacier mass-balance variability : a case study of Mittivakkat Gletscher, SE Greenland ' , Geografisk Tidsskrift - Danish Journal of Geography , vol. 118 , no. 1 , pp. 1-16 . https://doi.org/10.1080/00167223.2017.1386581 Empirical Orthogonal Function analysis Greenland mass-balance stakes Mittivakkat Gletscher observations article 2018 ftuniaarhuspubl https://doi.org/10.1080/00167223.2017.1386581 2023-08-09T22:57:56Z An Empirical Orthogonal Function (EOF) variance analysis was performed to map in detail the spatiotemporal variability in individual stake mass-balances (ba) on Mittivakkat Gletscher (MG) – in a region where at present five out of ~20.000 glaciers have mass-balance observations. The EOF analysis suggested that observed ba was summarized by two modes: EOF1 and EOF2 represented 80% (significant) and 6% (insignificant) of the explained variance, respectively. EOF1 captured a decline in ba that was uniformly distributed in space at all stakes. The decline was correlated with albedo observations and air temperature observations from nearby stations. EOF2, however, described variations in ba that were heterogeneously distributed among stakes and associated with local slope and aspect. Low elevation stakes (~<400 m a.s.l.) showed relatively negative (out of phase) correlation and higher elevated stakes relatively positive (in phase) eigenvector correlation values with EOF2. Such relatively negative and positive eigenvector correlation values were present where the constituted of exposed glacier ice or snow cover, respectively. The results from this study show how EOF analyses can provide information on spatiotemporal patterns of glacier mass-balance. Understanding such detailed variabilities in mass-balance on a Greenlandic glacier is of interest because a fifth of the Arctic contribution from glaciers and ice caps to sea-level rise originates from Greenland. Article in Journal/Newspaper albedo Arctic glacier Greenland greenlandic Aarhus University: Research Arctic Greenland Geografisk Tidsskrift-Danish Journal of Geography 118 1 1 16 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Empirical Orthogonal Function analysis Greenland mass-balance stakes Mittivakkat Gletscher observations |
spellingShingle |
Empirical Orthogonal Function analysis Greenland mass-balance stakes Mittivakkat Gletscher observations Mernild, Sebastian H. Beckerman, Andrew P. Knudsen, Niels Tvis Hasholt, Bent Yde, Jacob C. Statistical EOF analysis of spatiotemporal glacier mass-balance variability:a case study of Mittivakkat Gletscher, SE Greenland |
topic_facet |
Empirical Orthogonal Function analysis Greenland mass-balance stakes Mittivakkat Gletscher observations |
description |
An Empirical Orthogonal Function (EOF) variance analysis was performed to map in detail the spatiotemporal variability in individual stake mass-balances (ba) on Mittivakkat Gletscher (MG) – in a region where at present five out of ~20.000 glaciers have mass-balance observations. The EOF analysis suggested that observed ba was summarized by two modes: EOF1 and EOF2 represented 80% (significant) and 6% (insignificant) of the explained variance, respectively. EOF1 captured a decline in ba that was uniformly distributed in space at all stakes. The decline was correlated with albedo observations and air temperature observations from nearby stations. EOF2, however, described variations in ba that were heterogeneously distributed among stakes and associated with local slope and aspect. Low elevation stakes (~<400 m a.s.l.) showed relatively negative (out of phase) correlation and higher elevated stakes relatively positive (in phase) eigenvector correlation values with EOF2. Such relatively negative and positive eigenvector correlation values were present where the constituted of exposed glacier ice or snow cover, respectively. The results from this study show how EOF analyses can provide information on spatiotemporal patterns of glacier mass-balance. Understanding such detailed variabilities in mass-balance on a Greenlandic glacier is of interest because a fifth of the Arctic contribution from glaciers and ice caps to sea-level rise originates from Greenland. |
format |
Article in Journal/Newspaper |
author |
Mernild, Sebastian H. Beckerman, Andrew P. Knudsen, Niels Tvis Hasholt, Bent Yde, Jacob C. |
author_facet |
Mernild, Sebastian H. Beckerman, Andrew P. Knudsen, Niels Tvis Hasholt, Bent Yde, Jacob C. |
author_sort |
Mernild, Sebastian H. |
title |
Statistical EOF analysis of spatiotemporal glacier mass-balance variability:a case study of Mittivakkat Gletscher, SE Greenland |
title_short |
Statistical EOF analysis of spatiotemporal glacier mass-balance variability:a case study of Mittivakkat Gletscher, SE Greenland |
title_full |
Statistical EOF analysis of spatiotemporal glacier mass-balance variability:a case study of Mittivakkat Gletscher, SE Greenland |
title_fullStr |
Statistical EOF analysis of spatiotemporal glacier mass-balance variability:a case study of Mittivakkat Gletscher, SE Greenland |
title_full_unstemmed |
Statistical EOF analysis of spatiotemporal glacier mass-balance variability:a case study of Mittivakkat Gletscher, SE Greenland |
title_sort |
statistical eof analysis of spatiotemporal glacier mass-balance variability:a case study of mittivakkat gletscher, se greenland |
publishDate |
2018 |
url |
https://pure.au.dk/portal/da/publications/statistical-eof-analysis-of-spatiotemporal-glacier-massbalance-variability(48c79666-1ccc-46aa-b324-7e150fa0a8b8).html https://doi.org/10.1080/00167223.2017.1386581 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
albedo Arctic glacier Greenland greenlandic |
genre_facet |
albedo Arctic glacier Greenland greenlandic |
op_source |
Mernild , S H , Beckerman , A P , Knudsen , N T , Hasholt , B & Yde , J C 2018 , ' Statistical EOF analysis of spatiotemporal glacier mass-balance variability : a case study of Mittivakkat Gletscher, SE Greenland ' , Geografisk Tidsskrift - Danish Journal of Geography , vol. 118 , no. 1 , pp. 1-16 . https://doi.org/10.1080/00167223.2017.1386581 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1080/00167223.2017.1386581 |
container_title |
Geografisk Tidsskrift-Danish Journal of Geography |
container_volume |
118 |
container_issue |
1 |
container_start_page |
1 |
op_container_end_page |
16 |
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1775357233680351232 |