A regression model for the mass-balance distribution of the Vatnajokull ice cap, Iceland
A non-linear regression model describing the mass-balance distribution of the whole Vatnajokull ice cap, Iceland, for the years 1992-2000 is presented. All available data from some 40 locations over this 9 year period were used to determine the parameters of the model. The regression model uses six...
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International Glaciological Society
2003
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ftnerc:oai:nora.nerc.ac.uk:12554 2023-05-15T13:29:37+02:00 A regression model for the mass-balance distribution of the Vatnajokull ice cap, Iceland Adalgeirsdóttir, Gudfinna Gudmundsson, G.Hilmar Björnsson, Helgi 2003 http://nora.nerc.ac.uk/id/eprint/12554/ unknown International Glaciological Society Adalgeirsdóttir, Gudfinna; Gudmundsson, G.Hilmar orcid:0000-0003-4236-5369 Björnsson, Helgi. 2003 A regression model for the mass-balance distribution of the Vatnajokull ice cap, Iceland. Annals of Glaciology, 37. 189-193. https://doi.org/10.3189/172756403781815447 <https://doi.org/10.3189/172756403781815447> Glaciology Publication - Article PeerReviewed 2003 ftnerc https://doi.org/10.3189/172756403781815447 2023-02-04T19:28:04Z A non-linear regression model describing the mass-balance distribution of the whole Vatnajokull ice cap, Iceland, for the years 1992-2000 is presented. All available data from some 40 locations over this 9 year period were used to determine the parameters of the model. The regression model uses six adjustable parameters which all have a clear physical interpretation. They are the slope, direction and the height of the equilibrium-line altitude (ELA) plane, two altitude mass-balance gradients, and a maximum value of the surface mass balance. It is found that the temporal variation of the observed mass-balance distribution can be accurately described through annual shifts of the ELA. Annual shifts in ELA are on the order of 100 m, which is of the same magnitude as the change expected to be caused by the climate variation predicted during the next decades. A slight trend towards a more negative mass balance is detected during this 9 year period. Article in Journal/Newspaper Annals of Glaciology Ice cap Iceland Natural Environment Research Council: NERC Open Research Archive Ela ENVELOPE(9.642,9.642,63.170,63.170) Annals of Glaciology 37 189 193 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Glaciology |
spellingShingle |
Glaciology Adalgeirsdóttir, Gudfinna Gudmundsson, G.Hilmar Björnsson, Helgi A regression model for the mass-balance distribution of the Vatnajokull ice cap, Iceland |
topic_facet |
Glaciology |
description |
A non-linear regression model describing the mass-balance distribution of the whole Vatnajokull ice cap, Iceland, for the years 1992-2000 is presented. All available data from some 40 locations over this 9 year period were used to determine the parameters of the model. The regression model uses six adjustable parameters which all have a clear physical interpretation. They are the slope, direction and the height of the equilibrium-line altitude (ELA) plane, two altitude mass-balance gradients, and a maximum value of the surface mass balance. It is found that the temporal variation of the observed mass-balance distribution can be accurately described through annual shifts of the ELA. Annual shifts in ELA are on the order of 100 m, which is of the same magnitude as the change expected to be caused by the climate variation predicted during the next decades. A slight trend towards a more negative mass balance is detected during this 9 year period. |
format |
Article in Journal/Newspaper |
author |
Adalgeirsdóttir, Gudfinna Gudmundsson, G.Hilmar Björnsson, Helgi |
author_facet |
Adalgeirsdóttir, Gudfinna Gudmundsson, G.Hilmar Björnsson, Helgi |
author_sort |
Adalgeirsdóttir, Gudfinna |
title |
A regression model for the mass-balance distribution of the Vatnajokull ice cap, Iceland |
title_short |
A regression model for the mass-balance distribution of the Vatnajokull ice cap, Iceland |
title_full |
A regression model for the mass-balance distribution of the Vatnajokull ice cap, Iceland |
title_fullStr |
A regression model for the mass-balance distribution of the Vatnajokull ice cap, Iceland |
title_full_unstemmed |
A regression model for the mass-balance distribution of the Vatnajokull ice cap, Iceland |
title_sort |
regression model for the mass-balance distribution of the vatnajokull ice cap, iceland |
publisher |
International Glaciological Society |
publishDate |
2003 |
url |
http://nora.nerc.ac.uk/id/eprint/12554/ |
long_lat |
ENVELOPE(9.642,9.642,63.170,63.170) |
geographic |
Ela |
geographic_facet |
Ela |
genre |
Annals of Glaciology Ice cap Iceland |
genre_facet |
Annals of Glaciology Ice cap Iceland |
op_relation |
Adalgeirsdóttir, Gudfinna; Gudmundsson, G.Hilmar orcid:0000-0003-4236-5369 Björnsson, Helgi. 2003 A regression model for the mass-balance distribution of the Vatnajokull ice cap, Iceland. Annals of Glaciology, 37. 189-193. https://doi.org/10.3189/172756403781815447 <https://doi.org/10.3189/172756403781815447> |
op_doi |
https://doi.org/10.3189/172756403781815447 |
container_title |
Annals of Glaciology |
container_volume |
37 |
container_start_page |
189 |
op_container_end_page |
193 |
_version_ |
1766001533083713536 |