Empirical glacier mass-balance models for South America
We investigate relationships between synoptic-scale atmospheric variability and the mass-balance of 13 Andean glaciers (located 16–55° S) using Pearson correlation coefficients (PCCs) and multiple regressions. We then train empirical glacier mass-balance models (EGMs) in a cross-validated multiple r...
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ftuglasgow:oai:eprints.gla.ac.uk:309292 2023-12-24T10:11:01+01:00 Empirical glacier mass-balance models for South America Mutz, Sebastian G. Aschauer, Johannes 2022-02-18 text https://eprints.gla.ac.uk/309292/ https://eprints.gla.ac.uk/309292/1/309292.pdf en eng Cambridge University Press (CUP) https://eprints.gla.ac.uk/309292/1/309292.pdf Mutz, S. G. <http://eprints.gla.ac.uk/view/author/75407.html> and Aschauer, J. (2022) Empirical glacier mass-balance models for South America. Journal of Glaciology <https://eprints.gla.ac.uk/view/journal_volume/Journal_of_Glaciology.html>, 68(271), pp. 912-926. (doi:10.1017/jog.2022.6 <https://doi.org/10.1017/jog.2022.6>) cc_by_4 Articles PeerReviewed 2022 ftuglasgow https://doi.org/10.1017/jog.2022.6 2023-11-30T23:09:25Z We investigate relationships between synoptic-scale atmospheric variability and the mass-balance of 13 Andean glaciers (located 16–55° S) using Pearson correlation coefficients (PCCs) and multiple regressions. We then train empirical glacier mass-balance models (EGMs) in a cross-validated multiple regression procedure for each glacier. We find four distinct glaciological zones with regard to their climatic controls: (1) The mass-balance of the Outer Tropics glaciers is linked to temperature and the El Niño-Southern Oscillation (PCC ⩽ 0.6), (2) glaciers of the Desert Andes are mainly controlled by zonal wind intensity (PCC ⩽ 0.9) and the Antarctic Oscillation (PCC ⩽0.6), (3) the mass-balance of the Central Andes glaciers is primarily correlated with precipitation anomalies (PCC ⩽ 0.8), and (4) the glacier of the Fuegian Andes is controlled by winter precipitation (PCC ≈ 0.7) and summer temperature (PCC ≈ −0.9). Mass-balance data in the Lakes District and Patagonian Andes zones, where most glaciers are located, are too sparse for a robust detection of synoptic-scale climatic controls. The EGMs yield R2 values of ~ 0.45 on average and ⩽ 0.74 for the glaciers of the Desert Andes. The EGMs presented here do not consider glacier dynamics or geometry and are therefore only suitable for short-term predictions. Article in Journal/Newspaper Antarc* Antarctic Journal of Glaciology University of Glasgow: Enlighten - Publications Antarctic The Antarctic Journal of Glaciology 1 15 |
institution |
Open Polar |
collection |
University of Glasgow: Enlighten - Publications |
op_collection_id |
ftuglasgow |
language |
English |
description |
We investigate relationships between synoptic-scale atmospheric variability and the mass-balance of 13 Andean glaciers (located 16–55° S) using Pearson correlation coefficients (PCCs) and multiple regressions. We then train empirical glacier mass-balance models (EGMs) in a cross-validated multiple regression procedure for each glacier. We find four distinct glaciological zones with regard to their climatic controls: (1) The mass-balance of the Outer Tropics glaciers is linked to temperature and the El Niño-Southern Oscillation (PCC ⩽ 0.6), (2) glaciers of the Desert Andes are mainly controlled by zonal wind intensity (PCC ⩽ 0.9) and the Antarctic Oscillation (PCC ⩽0.6), (3) the mass-balance of the Central Andes glaciers is primarily correlated with precipitation anomalies (PCC ⩽ 0.8), and (4) the glacier of the Fuegian Andes is controlled by winter precipitation (PCC ≈ 0.7) and summer temperature (PCC ≈ −0.9). Mass-balance data in the Lakes District and Patagonian Andes zones, where most glaciers are located, are too sparse for a robust detection of synoptic-scale climatic controls. The EGMs yield R2 values of ~ 0.45 on average and ⩽ 0.74 for the glaciers of the Desert Andes. The EGMs presented here do not consider glacier dynamics or geometry and are therefore only suitable for short-term predictions. |
format |
Article in Journal/Newspaper |
author |
Mutz, Sebastian G. Aschauer, Johannes |
spellingShingle |
Mutz, Sebastian G. Aschauer, Johannes Empirical glacier mass-balance models for South America |
author_facet |
Mutz, Sebastian G. Aschauer, Johannes |
author_sort |
Mutz, Sebastian G. |
title |
Empirical glacier mass-balance models for South America |
title_short |
Empirical glacier mass-balance models for South America |
title_full |
Empirical glacier mass-balance models for South America |
title_fullStr |
Empirical glacier mass-balance models for South America |
title_full_unstemmed |
Empirical glacier mass-balance models for South America |
title_sort |
empirical glacier mass-balance models for south america |
publisher |
Cambridge University Press (CUP) |
publishDate |
2022 |
url |
https://eprints.gla.ac.uk/309292/ https://eprints.gla.ac.uk/309292/1/309292.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Journal of Glaciology |
genre_facet |
Antarc* Antarctic Journal of Glaciology |
op_relation |
https://eprints.gla.ac.uk/309292/1/309292.pdf Mutz, S. G. <http://eprints.gla.ac.uk/view/author/75407.html> and Aschauer, J. (2022) Empirical glacier mass-balance models for South America. Journal of Glaciology <https://eprints.gla.ac.uk/view/journal_volume/Journal_of_Glaciology.html>, 68(271), pp. 912-926. (doi:10.1017/jog.2022.6 <https://doi.org/10.1017/jog.2022.6>) |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1017/jog.2022.6 |
container_title |
Journal of Glaciology |
container_start_page |
1 |
op_container_end_page |
15 |
_version_ |
1786159552637435904 |