Surface ablation and its drivers along a west–east transect of the Southern Patagonia Icefield
Glaciers in the Southern Patagonia Icefield (SPI) have been shrinking in recent decades, but due to a lack of field observations, understanding of the drivers of ablation is limited. We present a distributed surface energy balance model, forced with meteorological observations from a west–east trans...
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Cambridge University Press
2022
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Online Access: | https://doi.org/10.1017/jog.2021.92 https://doaj.org/article/9023900a1d5e4604ae5b09df63fa6d69 |
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ftdoajarticles:oai:doaj.org/article:9023900a1d5e4604ae5b09df63fa6d69 2023-05-15T16:57:36+02:00 Surface ablation and its drivers along a west–east transect of the Southern Patagonia Icefield Claudio Bravo Andrew N. Ross Duncan J. Quincey Sebastián Cisternas Andrés Rivera 2022-04-01T00:00:00Z https://doi.org/10.1017/jog.2021.92 https://doaj.org/article/9023900a1d5e4604ae5b09df63fa6d69 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143021000927/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2021.92 0022-1430 1727-5652 https://doaj.org/article/9023900a1d5e4604ae5b09df63fa6d69 Journal of Glaciology, Vol 68, Pp 305-318 (2022) Energy balance glacier modelling melt–surface Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2022 ftdoajarticles https://doi.org/10.1017/jog.2021.92 2023-03-12T01:30:54Z Glaciers in the Southern Patagonia Icefield (SPI) have been shrinking in recent decades, but due to a lack of field observations, understanding of the drivers of ablation is limited. We present a distributed surface energy balance model, forced with meteorological observations from a west–east transect located in the north of the SPI. Between October 2015 and June 2016, humid and warm on-glacier conditions prevailed on the western side compared to dry and cold conditions on the eastern side. Controls of ablation differ along the transect, although at glacier-wide scale sensible heat (mean of 72 W m−2 to the west and 51 W m−2 to the east) and net shortwave radiation (mean of 54 W m−2 to the west and 52 W m−2 to the east) provided the main energy sources. Net longwave radiation was an energy sink, while latent heat was the most spatially variable flux, being an energy sink in the east (−4 W m−2) and a source in the west (20 W m−2). Ablation was high, but at comparable elevations, it was greater to the west. These results provide new insights into the spatial variability of energy-balance fluxes and their control over the ablation of Patagonian glaciers. Article in Journal/Newspaper Journal of Glaciology Directory of Open Access Journals: DOAJ Articles Patagonia Journal of Glaciology 68 268 305 318 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Energy balance glacier modelling melt–surface Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Energy balance glacier modelling melt–surface Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Claudio Bravo Andrew N. Ross Duncan J. Quincey Sebastián Cisternas Andrés Rivera Surface ablation and its drivers along a west–east transect of the Southern Patagonia Icefield |
topic_facet |
Energy balance glacier modelling melt–surface Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
Glaciers in the Southern Patagonia Icefield (SPI) have been shrinking in recent decades, but due to a lack of field observations, understanding of the drivers of ablation is limited. We present a distributed surface energy balance model, forced with meteorological observations from a west–east transect located in the north of the SPI. Between October 2015 and June 2016, humid and warm on-glacier conditions prevailed on the western side compared to dry and cold conditions on the eastern side. Controls of ablation differ along the transect, although at glacier-wide scale sensible heat (mean of 72 W m−2 to the west and 51 W m−2 to the east) and net shortwave radiation (mean of 54 W m−2 to the west and 52 W m−2 to the east) provided the main energy sources. Net longwave radiation was an energy sink, while latent heat was the most spatially variable flux, being an energy sink in the east (−4 W m−2) and a source in the west (20 W m−2). Ablation was high, but at comparable elevations, it was greater to the west. These results provide new insights into the spatial variability of energy-balance fluxes and their control over the ablation of Patagonian glaciers. |
format |
Article in Journal/Newspaper |
author |
Claudio Bravo Andrew N. Ross Duncan J. Quincey Sebastián Cisternas Andrés Rivera |
author_facet |
Claudio Bravo Andrew N. Ross Duncan J. Quincey Sebastián Cisternas Andrés Rivera |
author_sort |
Claudio Bravo |
title |
Surface ablation and its drivers along a west–east transect of the Southern Patagonia Icefield |
title_short |
Surface ablation and its drivers along a west–east transect of the Southern Patagonia Icefield |
title_full |
Surface ablation and its drivers along a west–east transect of the Southern Patagonia Icefield |
title_fullStr |
Surface ablation and its drivers along a west–east transect of the Southern Patagonia Icefield |
title_full_unstemmed |
Surface ablation and its drivers along a west–east transect of the Southern Patagonia Icefield |
title_sort |
surface ablation and its drivers along a west–east transect of the southern patagonia icefield |
publisher |
Cambridge University Press |
publishDate |
2022 |
url |
https://doi.org/10.1017/jog.2021.92 https://doaj.org/article/9023900a1d5e4604ae5b09df63fa6d69 |
geographic |
Patagonia |
geographic_facet |
Patagonia |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology, Vol 68, Pp 305-318 (2022) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143021000927/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2021.92 0022-1430 1727-5652 https://doaj.org/article/9023900a1d5e4604ae5b09df63fa6d69 |
op_doi |
https://doi.org/10.1017/jog.2021.92 |
container_title |
Journal of Glaciology |
container_volume |
68 |
container_issue |
268 |
container_start_page |
305 |
op_container_end_page |
318 |
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1766049169261199360 |