Testing and application of a model for snow redistribution (Snow_Blow) in the Ellsworth Mountains, Antarctica
Wind-driven snow redistribution can increase the spatial heterogeneity of snow accumulation on ice caps and ice sheets, and may prove crucial for the initiation and survival of glaciers in areas of marginal glaciation. We present a snowdrift model (Snow_Blow), which extends and improves the model of...
Published in: | Journal of Glaciology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Cambridge University Press
2019
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Online Access: | https://nrl.northumbria.ac.uk/id/eprint/41325/ https://doi.org/10.1017/jog.2019.70 https://nrl.northumbria.ac.uk/id/eprint/41325/8/testing_and_application_of_a_model_for_snow_redistribution_snowblow_in_the_ellsworth_mountains_antarctica.pdf https://nrl.northumbria.ac.uk/id/eprint/41325/1/testing_and_application_of_a_model_for_snow_redistribution_snowblow_in_the_ellsworth_mountains_antarctica.pdf |
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ftunivnorthumb:oai:nrl.northumbria.ac.uk:41325 2023-05-15T13:41:26+02:00 Testing and application of a model for snow redistribution (Snow_Blow) in the Ellsworth Mountains, Antarctica Mills, Stephanie C. Le Brocq, Anne M. Winter, Kate Smith, Michael Hillier, John Ardakova, Ekaterina Boston, Clare M. Sugden, David Woodward, John 2019-12 text https://nrl.northumbria.ac.uk/id/eprint/41325/ https://doi.org/10.1017/jog.2019.70 https://nrl.northumbria.ac.uk/id/eprint/41325/8/testing_and_application_of_a_model_for_snow_redistribution_snowblow_in_the_ellsworth_mountains_antarctica.pdf https://nrl.northumbria.ac.uk/id/eprint/41325/1/testing_and_application_of_a_model_for_snow_redistribution_snowblow_in_the_ellsworth_mountains_antarctica.pdf en eng Cambridge University Press https://nrl.northumbria.ac.uk/id/eprint/41325/8/testing_and_application_of_a_model_for_snow_redistribution_snowblow_in_the_ellsworth_mountains_antarctica.pdf https://nrl.northumbria.ac.uk/id/eprint/41325/1/testing_and_application_of_a_model_for_snow_redistribution_snowblow_in_the_ellsworth_mountains_antarctica.pdf Mills, Stephanie C., Le Brocq, Anne M., Winter, Kate, Smith, Michael, Hillier, John, Ardakova, Ekaterina, Boston, Clare M., Sugden, David and Woodward, John (2019) Testing and application of a model for snow redistribution (Snow_Blow) in the Ellsworth Mountains, Antarctica. Journal of Glaciology, 65 (254). pp. 957-970. ISSN 0022-1430 cc_by_4_0 CC-BY F800 Physical and Terrestrial Geographical and Environmental Sciences Article PeerReviewed 2019 ftunivnorthumb https://doi.org/10.1017/jog.2019.70 2022-09-25T06:10:59Z Wind-driven snow redistribution can increase the spatial heterogeneity of snow accumulation on ice caps and ice sheets, and may prove crucial for the initiation and survival of glaciers in areas of marginal glaciation. We present a snowdrift model (Snow_Blow), which extends and improves the model of Purves, Mackaness and Sugden (1999, Journal of Quaternary Science 14, 313–321). The model calculates spatial variations in relative snow accumulation that result from variations in topography, using a digital elevation model (DEM) and wind direction as inputs. Improvements include snow redistribution using a flux routing algorithm, DEM resolution independence and the addition of a slope curvature component. This paper tests Snow_Blow in Antarctica (a modern environment) and reveals its potential for application in palaeoenvironmental settings, where input meteorological data are unavailable and difficult to estimate. Specifically, Snow_Blow is applied to the Ellsworth Mountains in West Antarctica where ablation is considered to be predominantly related to wind erosion processes. We find that Snow_Blow is able to replicate well the existing distribution of accumulating snow and snow erosion as recorded in and around Blue Ice Areas. Lastly, a variety of model parameters are tested, including depositional distance and erosion vs wind speed, to provide the most likely input parameters for palaeoenvironmental reconstructions. Article in Journal/Newspaper Antarc* Antarctica Antarctica Journal Journal of Glaciology West Antarctica Northumbria University, Newcastle: Northumbria Research Link (NRL) Ellsworth Mountains ENVELOPE(-85.000,-85.000,-78.750,-78.750) West Antarctica Journal of Glaciology 65 254 957 970 |
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 Mills, Stephanie C. Le Brocq, Anne M. Winter, Kate Smith, Michael Hillier, John Ardakova, Ekaterina Boston, Clare M. Sugden, David Woodward, John Testing and application of a model for snow redistribution (Snow_Blow) in the Ellsworth Mountains, Antarctica |
topic_facet |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
description |
Wind-driven snow redistribution can increase the spatial heterogeneity of snow accumulation on ice caps and ice sheets, and may prove crucial for the initiation and survival of glaciers in areas of marginal glaciation. We present a snowdrift model (Snow_Blow), which extends and improves the model of Purves, Mackaness and Sugden (1999, Journal of Quaternary Science 14, 313–321). The model calculates spatial variations in relative snow accumulation that result from variations in topography, using a digital elevation model (DEM) and wind direction as inputs. Improvements include snow redistribution using a flux routing algorithm, DEM resolution independence and the addition of a slope curvature component. This paper tests Snow_Blow in Antarctica (a modern environment) and reveals its potential for application in palaeoenvironmental settings, where input meteorological data are unavailable and difficult to estimate. Specifically, Snow_Blow is applied to the Ellsworth Mountains in West Antarctica where ablation is considered to be predominantly related to wind erosion processes. We find that Snow_Blow is able to replicate well the existing distribution of accumulating snow and snow erosion as recorded in and around Blue Ice Areas. Lastly, a variety of model parameters are tested, including depositional distance and erosion vs wind speed, to provide the most likely input parameters for palaeoenvironmental reconstructions. |
format |
Article in Journal/Newspaper |
author |
Mills, Stephanie C. Le Brocq, Anne M. Winter, Kate Smith, Michael Hillier, John Ardakova, Ekaterina Boston, Clare M. Sugden, David Woodward, John |
author_facet |
Mills, Stephanie C. Le Brocq, Anne M. Winter, Kate Smith, Michael Hillier, John Ardakova, Ekaterina Boston, Clare M. Sugden, David Woodward, John |
author_sort |
Mills, Stephanie C. |
title |
Testing and application of a model for snow redistribution (Snow_Blow) in the Ellsworth Mountains, Antarctica |
title_short |
Testing and application of a model for snow redistribution (Snow_Blow) in the Ellsworth Mountains, Antarctica |
title_full |
Testing and application of a model for snow redistribution (Snow_Blow) in the Ellsworth Mountains, Antarctica |
title_fullStr |
Testing and application of a model for snow redistribution (Snow_Blow) in the Ellsworth Mountains, Antarctica |
title_full_unstemmed |
Testing and application of a model for snow redistribution (Snow_Blow) in the Ellsworth Mountains, Antarctica |
title_sort |
testing and application of a model for snow redistribution (snow_blow) in the ellsworth mountains, antarctica |
publisher |
Cambridge University Press |
publishDate |
2019 |
url |
https://nrl.northumbria.ac.uk/id/eprint/41325/ https://doi.org/10.1017/jog.2019.70 https://nrl.northumbria.ac.uk/id/eprint/41325/8/testing_and_application_of_a_model_for_snow_redistribution_snowblow_in_the_ellsworth_mountains_antarctica.pdf https://nrl.northumbria.ac.uk/id/eprint/41325/1/testing_and_application_of_a_model_for_snow_redistribution_snowblow_in_the_ellsworth_mountains_antarctica.pdf |
long_lat |
ENVELOPE(-85.000,-85.000,-78.750,-78.750) |
geographic |
Ellsworth Mountains West Antarctica |
geographic_facet |
Ellsworth Mountains West Antarctica |
genre |
Antarc* Antarctica Antarctica Journal Journal of Glaciology West Antarctica |
genre_facet |
Antarc* Antarctica Antarctica Journal Journal of Glaciology West Antarctica |
op_relation |
https://nrl.northumbria.ac.uk/id/eprint/41325/8/testing_and_application_of_a_model_for_snow_redistribution_snowblow_in_the_ellsworth_mountains_antarctica.pdf https://nrl.northumbria.ac.uk/id/eprint/41325/1/testing_and_application_of_a_model_for_snow_redistribution_snowblow_in_the_ellsworth_mountains_antarctica.pdf Mills, Stephanie C., Le Brocq, Anne M., Winter, Kate, Smith, Michael, Hillier, John, Ardakova, Ekaterina, Boston, Clare M., Sugden, David and Woodward, John (2019) Testing and application of a model for snow redistribution (Snow_Blow) in the Ellsworth Mountains, Antarctica. Journal of Glaciology, 65 (254). pp. 957-970. ISSN 0022-1430 |
op_rights |
cc_by_4_0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1017/jog.2019.70 |
container_title |
Journal of Glaciology |
container_volume |
65 |
container_issue |
254 |
container_start_page |
957 |
op_container_end_page |
970 |
_version_ |
1766150811753119744 |