The energy and mass balance of Peruvian glaciers
Peruvian glaciers are important contributors to dry season runoff for agriculture and hydropower, but they are at risk of disappearing due to climate change. We applied a physically-based, energy balance melt model at five on-glacier sites within the Peruvian Cordilleras Blanca and Vilcanota. Net sh...
Published in: | Journal of Geophysical Research: Atmospheres |
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Format: | Article in Journal/Newspaper |
Language: | English |
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American Geophysical Union
2021
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Online Access: | https://nrl.northumbria.ac.uk/id/eprint/47758/ https://doi.org/10.1029/2021JD034911 https://nrl.northumbria.ac.uk/id/eprint/47758/19/2021JD034911.pdf https://nrl.northumbria.ac.uk/id/eprint/47758/2/2021_08_23_Supplementary_material_after_reviews.pdf https://nrl.northumbria.ac.uk/id/eprint/47758/1/2021_08_13_Peru_energy_balance_paper_after_reviews.pdf |
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ftunivnorthumb:oai:nrl.northumbria.ac.uk:47758 2023-05-15T16:38:11+02:00 The energy and mass balance of Peruvian glaciers Fyffe, Catriona Potter, Emily Fugger, Stefan Orr, Andrew Fatichi, Simone Loarte, Edwin Medina, Katy Hellstrom, Robert A. Bernat, Maud Aubry-Wake, Caroline WolGurgiser, Wolfgang Baker Perry, L. Suarez, Wilsonrez Quincey, Duncan J. Pellicciotti, Francesca 2021-12-16 text https://nrl.northumbria.ac.uk/id/eprint/47758/ https://doi.org/10.1029/2021JD034911 https://nrl.northumbria.ac.uk/id/eprint/47758/19/2021JD034911.pdf https://nrl.northumbria.ac.uk/id/eprint/47758/2/2021_08_23_Supplementary_material_after_reviews.pdf https://nrl.northumbria.ac.uk/id/eprint/47758/1/2021_08_13_Peru_energy_balance_paper_after_reviews.pdf en eng American Geophysical Union https://nrl.northumbria.ac.uk/id/eprint/47758/19/2021JD034911.pdf https://nrl.northumbria.ac.uk/id/eprint/47758/2/2021_08_23_Supplementary_material_after_reviews.pdf https://nrl.northumbria.ac.uk/id/eprint/47758/1/2021_08_13_Peru_energy_balance_paper_after_reviews.pdf Fyffe, Catriona, Potter, Emily, Fugger, Stefan, Orr, Andrew, Fatichi, Simone, Loarte, Edwin, Medina, Katy, Hellstrom, Robert A., Bernat, Maud, Aubry-Wake, Caroline, WolGurgiser, Wolfgang, Baker Perry, L., Suarez, Wilsonrez, Quincey, Duncan J. and Pellicciotti, Francesca (2021) The energy and mass balance of Peruvian glaciers. Journal of Geophysical Research - Atmospheres, 126 (23). e2021JD034911. ISSN 2169-8996 cc_by_4_0 CC-BY F800 Physical and Terrestrial Geographical and Environmental Sciences Article PeerReviewed 2021 ftunivnorthumb https://doi.org/10.1029/2021JD034911 2022-09-25T06:14:45Z Peruvian glaciers are important contributors to dry season runoff for agriculture and hydropower, but they are at risk of disappearing due to climate change. We applied a physically-based, energy balance melt model at five on-glacier sites within the Peruvian Cordilleras Blanca and Vilcanota. Net shortwave radiation dominates the energy balance, and despite this flux being higher in the dry season, melt rates are lower due to losses from net longwave radiation and the latent heat flux. The sensible heat flux is a relatively small contributor to melt energy. At three of the sites the wet season snowpack was discontinuous, forming and melting within a daily to weekly timescale, and resulting in highly variable melt rates closely related to precipitation dynamics. Cold air temperatures due to a strong La Niña year at Shallap Glacier (Cordillera Blanca) resulted in a continuous wet season snowpack, significantly reducing wet season ablation. Sublimation was most important at the highest site in the accumulation zone of the Quelccaya Ice Cap (Cordillera Vilcanota), accounting for 81 of ablation, compared to 2-4 for the other sites. Air temperature and precipitation inputs were perturbed to investigate the climate sensitivity of the five glaciers. At the lower sites warmer air temperatures resulted in a switch from snowfall to rain, so that ablation was increased via the decrease in albedo and increase in net shortwave radiation. At the top of Quelccaya Ice Cap warming caused melting to replace sublimation so that ablation increased non-linearly with air temperature. Article in Journal/Newspaper Ice cap Northumbria University, Newcastle: Northumbria Research Link (NRL) Journal of Geophysical Research: Atmospheres 126 23 |
institution |
Open Polar |
collection |
Northumbria University, Newcastle: Northumbria Research Link (NRL) |
op_collection_id |
ftunivnorthumb |
language |
English |
topic |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
spellingShingle |
F800 Physical and Terrestrial Geographical and Environmental Sciences Fyffe, Catriona Potter, Emily Fugger, Stefan Orr, Andrew Fatichi, Simone Loarte, Edwin Medina, Katy Hellstrom, Robert A. Bernat, Maud Aubry-Wake, Caroline WolGurgiser, Wolfgang Baker Perry, L. Suarez, Wilsonrez Quincey, Duncan J. Pellicciotti, Francesca The energy and mass balance of Peruvian glaciers |
topic_facet |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
description |
Peruvian glaciers are important contributors to dry season runoff for agriculture and hydropower, but they are at risk of disappearing due to climate change. We applied a physically-based, energy balance melt model at five on-glacier sites within the Peruvian Cordilleras Blanca and Vilcanota. Net shortwave radiation dominates the energy balance, and despite this flux being higher in the dry season, melt rates are lower due to losses from net longwave radiation and the latent heat flux. The sensible heat flux is a relatively small contributor to melt energy. At three of the sites the wet season snowpack was discontinuous, forming and melting within a daily to weekly timescale, and resulting in highly variable melt rates closely related to precipitation dynamics. Cold air temperatures due to a strong La Niña year at Shallap Glacier (Cordillera Blanca) resulted in a continuous wet season snowpack, significantly reducing wet season ablation. Sublimation was most important at the highest site in the accumulation zone of the Quelccaya Ice Cap (Cordillera Vilcanota), accounting for 81 of ablation, compared to 2-4 for the other sites. Air temperature and precipitation inputs were perturbed to investigate the climate sensitivity of the five glaciers. At the lower sites warmer air temperatures resulted in a switch from snowfall to rain, so that ablation was increased via the decrease in albedo and increase in net shortwave radiation. At the top of Quelccaya Ice Cap warming caused melting to replace sublimation so that ablation increased non-linearly with air temperature. |
format |
Article in Journal/Newspaper |
author |
Fyffe, Catriona Potter, Emily Fugger, Stefan Orr, Andrew Fatichi, Simone Loarte, Edwin Medina, Katy Hellstrom, Robert A. Bernat, Maud Aubry-Wake, Caroline WolGurgiser, Wolfgang Baker Perry, L. Suarez, Wilsonrez Quincey, Duncan J. Pellicciotti, Francesca |
author_facet |
Fyffe, Catriona Potter, Emily Fugger, Stefan Orr, Andrew Fatichi, Simone Loarte, Edwin Medina, Katy Hellstrom, Robert A. Bernat, Maud Aubry-Wake, Caroline WolGurgiser, Wolfgang Baker Perry, L. Suarez, Wilsonrez Quincey, Duncan J. Pellicciotti, Francesca |
author_sort |
Fyffe, Catriona |
title |
The energy and mass balance of Peruvian glaciers |
title_short |
The energy and mass balance of Peruvian glaciers |
title_full |
The energy and mass balance of Peruvian glaciers |
title_fullStr |
The energy and mass balance of Peruvian glaciers |
title_full_unstemmed |
The energy and mass balance of Peruvian glaciers |
title_sort |
energy and mass balance of peruvian glaciers |
publisher |
American Geophysical Union |
publishDate |
2021 |
url |
https://nrl.northumbria.ac.uk/id/eprint/47758/ https://doi.org/10.1029/2021JD034911 https://nrl.northumbria.ac.uk/id/eprint/47758/19/2021JD034911.pdf https://nrl.northumbria.ac.uk/id/eprint/47758/2/2021_08_23_Supplementary_material_after_reviews.pdf https://nrl.northumbria.ac.uk/id/eprint/47758/1/2021_08_13_Peru_energy_balance_paper_after_reviews.pdf |
genre |
Ice cap |
genre_facet |
Ice cap |
op_relation |
https://nrl.northumbria.ac.uk/id/eprint/47758/19/2021JD034911.pdf https://nrl.northumbria.ac.uk/id/eprint/47758/2/2021_08_23_Supplementary_material_after_reviews.pdf https://nrl.northumbria.ac.uk/id/eprint/47758/1/2021_08_13_Peru_energy_balance_paper_after_reviews.pdf Fyffe, Catriona, Potter, Emily, Fugger, Stefan, Orr, Andrew, Fatichi, Simone, Loarte, Edwin, Medina, Katy, Hellstrom, Robert A., Bernat, Maud, Aubry-Wake, Caroline, WolGurgiser, Wolfgang, Baker Perry, L., Suarez, Wilsonrez, Quincey, Duncan J. and Pellicciotti, Francesca (2021) The energy and mass balance of Peruvian glaciers. Journal of Geophysical Research - Atmospheres, 126 (23). e2021JD034911. ISSN 2169-8996 |
op_rights |
cc_by_4_0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2021JD034911 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
126 |
container_issue |
23 |
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1766028469996617728 |