Climate sensitivity and mass-balance evolution of Gran Campo Nevado ice cap, southwest Patagonia
ABSTRACT. A degree-day model extended for surface mass-balance calculations has been applied to derive the sensitivity of Gran Campo Nevado ice cap (GCN), southwest Patagonia, to climate change. Seasonal sensitivity characteristics were computed using automatic weather station data gathered in the p...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.430.3363 2023-05-15T16:38:10+02:00 Climate sensitivity and mass-balance evolution of Gran Campo Nevado ice cap, southwest Patagonia Marco Möller Christoph Schneider The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.430.3363 http://www.igsoc.org/annals/48/A48a022.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.430.3363 http://www.igsoc.org/annals/48/A48a022.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.igsoc.org/annals/48/A48a022.pdf text ftciteseerx 2016-01-08T04:37:38Z ABSTRACT. A degree-day model extended for surface mass-balance calculations has been applied to derive the sensitivity of Gran Campo Nevado ice cap (GCN), southwest Patagonia, to climate change. Seasonal sensitivity characteristics were computed using automatic weather station data gathered in the period 2000–05. Results indicate pronounced mass-balance sensitivity to temperature during the summer, with monthly values of –0.27 � � 0.01 m w.e. K –1. Monthly sensitivity to a 10 % precipitation perturbation fluctuates around þ0.03 m w.e. The sensitivity characteristics obtained were used to model the surface mass-balance evolution of GCN during the 20th and 21st centuries based on monthly means of air temperature and precipitation derived from bias-corrected weather station data and statistically downscaled re-analysis and general climate model data. Surface mass balance shows a persistently negative trend ranging from around þ1 m w.e. a –1 at the beginning of the 20th century down to almost –1.5 m w.e. a –1 during the first years of the 21st century, with only a few positive years occurring occasionally during the second half of the 20th century. The scenario for the end of the 21st century totals approximately –4.5 m w.e. a –1, i.e. an estimated ice volume loss for GCN of 59 km 3 during 1900–2099. Text Ice cap Unknown Patagonia |
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English |
description |
ABSTRACT. A degree-day model extended for surface mass-balance calculations has been applied to derive the sensitivity of Gran Campo Nevado ice cap (GCN), southwest Patagonia, to climate change. Seasonal sensitivity characteristics were computed using automatic weather station data gathered in the period 2000–05. Results indicate pronounced mass-balance sensitivity to temperature during the summer, with monthly values of –0.27 � � 0.01 m w.e. K –1. Monthly sensitivity to a 10 % precipitation perturbation fluctuates around þ0.03 m w.e. The sensitivity characteristics obtained were used to model the surface mass-balance evolution of GCN during the 20th and 21st centuries based on monthly means of air temperature and precipitation derived from bias-corrected weather station data and statistically downscaled re-analysis and general climate model data. Surface mass balance shows a persistently negative trend ranging from around þ1 m w.e. a –1 at the beginning of the 20th century down to almost –1.5 m w.e. a –1 during the first years of the 21st century, with only a few positive years occurring occasionally during the second half of the 20th century. The scenario for the end of the 21st century totals approximately –4.5 m w.e. a –1, i.e. an estimated ice volume loss for GCN of 59 km 3 during 1900–2099. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Marco Möller Christoph Schneider |
spellingShingle |
Marco Möller Christoph Schneider Climate sensitivity and mass-balance evolution of Gran Campo Nevado ice cap, southwest Patagonia |
author_facet |
Marco Möller Christoph Schneider |
author_sort |
Marco Möller |
title |
Climate sensitivity and mass-balance evolution of Gran Campo Nevado ice cap, southwest Patagonia |
title_short |
Climate sensitivity and mass-balance evolution of Gran Campo Nevado ice cap, southwest Patagonia |
title_full |
Climate sensitivity and mass-balance evolution of Gran Campo Nevado ice cap, southwest Patagonia |
title_fullStr |
Climate sensitivity and mass-balance evolution of Gran Campo Nevado ice cap, southwest Patagonia |
title_full_unstemmed |
Climate sensitivity and mass-balance evolution of Gran Campo Nevado ice cap, southwest Patagonia |
title_sort |
climate sensitivity and mass-balance evolution of gran campo nevado ice cap, southwest patagonia |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.430.3363 http://www.igsoc.org/annals/48/A48a022.pdf |
geographic |
Patagonia |
geographic_facet |
Patagonia |
genre |
Ice cap |
genre_facet |
Ice cap |
op_source |
http://www.igsoc.org/annals/48/A48a022.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.430.3363 http://www.igsoc.org/annals/48/A48a022.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766028453455331328 |