Observations and simulations of new snow density in the drifting snow-dominated environment of Antarctica
Owing to drifting snow processes, snow accumulation and surface density in polar environments are variable in space and time. We present new field data of manual measurements, repeat terrestrial laser scanning and snow micro-penetrometry from Dronning Maud Land, Antarctica, showing the density of ne...
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Cambridge University Press
2023
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Online Access: | https://doi.org/10.1017/jog.2022.102 https://doaj.org/article/b984331f2f354fa787fd3d71b1a7127a |
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ftdoajarticles:oai:doaj.org/article:b984331f2f354fa787fd3d71b1a7127a 2023-08-20T04:01:53+02:00 Observations and simulations of new snow density in the drifting snow-dominated environment of Antarctica Nander Wever Eric Keenan Charles Amory Michael Lehning Armin Sigmund Hendrik Huwald Jan T. M. Lenaerts 2023-08-01T00:00:00Z https://doi.org/10.1017/jog.2022.102 https://doaj.org/article/b984331f2f354fa787fd3d71b1a7127a EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143022001022/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2022.102 0022-1430 1727-5652 https://doaj.org/article/b984331f2f354fa787fd3d71b1a7127a Journal of Glaciology, Vol 69, Pp 823-840 (2023) Polar firn snow/ice surface processes wind-blown snow Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2023 ftdoajarticles https://doi.org/10.1017/jog.2022.102 2023-07-30T00:36:44Z Owing to drifting snow processes, snow accumulation and surface density in polar environments are variable in space and time. We present new field data of manual measurements, repeat terrestrial laser scanning and snow micro-penetrometry from Dronning Maud Land, Antarctica, showing the density of new snow accumulations. We combine these data with published drifting snow mass flux observations, to evaluate the performance of the 1-D, detailed, physics-based snow cover model SNOWPACK in representing drifting snow and surface density. For two sites in East Antarctica with multiple years of data, we found a coefficient of determination for the simulated drifting snow of r2 = 0.42 and r2 = 0.50, respectively. The field observations show the existence of low-density snow accumulations during low wind conditions. Successive high wind speed events generally erode these low-density layers while producing spatially variable erosion/deposition patterns with typical length scales of a few metres. We found that a model setup that is able to represent low-density snow accumulating during low wind speed conditions, as well as subsequent snow erosion and redeposition at higher densities during drifting snow events was mostly able to describe the observed temporal variability of surface density in the field. Article in Journal/Newspaper Antarc* Antarctica Dronning Maud Land East Antarctica Journal of Glaciology Directory of Open Access Journals: DOAJ Articles Dronning Maud Land East Antarctica Journal of Glaciology 1 18 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Polar firn snow/ice surface processes wind-blown snow Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Polar firn snow/ice surface processes wind-blown snow Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Nander Wever Eric Keenan Charles Amory Michael Lehning Armin Sigmund Hendrik Huwald Jan T. M. Lenaerts Observations and simulations of new snow density in the drifting snow-dominated environment of Antarctica |
topic_facet |
Polar firn snow/ice surface processes wind-blown snow Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
Owing to drifting snow processes, snow accumulation and surface density in polar environments are variable in space and time. We present new field data of manual measurements, repeat terrestrial laser scanning and snow micro-penetrometry from Dronning Maud Land, Antarctica, showing the density of new snow accumulations. We combine these data with published drifting snow mass flux observations, to evaluate the performance of the 1-D, detailed, physics-based snow cover model SNOWPACK in representing drifting snow and surface density. For two sites in East Antarctica with multiple years of data, we found a coefficient of determination for the simulated drifting snow of r2 = 0.42 and r2 = 0.50, respectively. The field observations show the existence of low-density snow accumulations during low wind conditions. Successive high wind speed events generally erode these low-density layers while producing spatially variable erosion/deposition patterns with typical length scales of a few metres. We found that a model setup that is able to represent low-density snow accumulating during low wind speed conditions, as well as subsequent snow erosion and redeposition at higher densities during drifting snow events was mostly able to describe the observed temporal variability of surface density in the field. |
format |
Article in Journal/Newspaper |
author |
Nander Wever Eric Keenan Charles Amory Michael Lehning Armin Sigmund Hendrik Huwald Jan T. M. Lenaerts |
author_facet |
Nander Wever Eric Keenan Charles Amory Michael Lehning Armin Sigmund Hendrik Huwald Jan T. M. Lenaerts |
author_sort |
Nander Wever |
title |
Observations and simulations of new snow density in the drifting snow-dominated environment of Antarctica |
title_short |
Observations and simulations of new snow density in the drifting snow-dominated environment of Antarctica |
title_full |
Observations and simulations of new snow density in the drifting snow-dominated environment of Antarctica |
title_fullStr |
Observations and simulations of new snow density in the drifting snow-dominated environment of Antarctica |
title_full_unstemmed |
Observations and simulations of new snow density in the drifting snow-dominated environment of Antarctica |
title_sort |
observations and simulations of new snow density in the drifting snow-dominated environment of antarctica |
publisher |
Cambridge University Press |
publishDate |
2023 |
url |
https://doi.org/10.1017/jog.2022.102 https://doaj.org/article/b984331f2f354fa787fd3d71b1a7127a |
geographic |
Dronning Maud Land East Antarctica |
geographic_facet |
Dronning Maud Land East Antarctica |
genre |
Antarc* Antarctica Dronning Maud Land East Antarctica Journal of Glaciology |
genre_facet |
Antarc* Antarctica Dronning Maud Land East Antarctica Journal of Glaciology |
op_source |
Journal of Glaciology, Vol 69, Pp 823-840 (2023) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143022001022/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2022.102 0022-1430 1727-5652 https://doaj.org/article/b984331f2f354fa787fd3d71b1a7127a |
op_doi |
https://doi.org/10.1017/jog.2022.102 |
container_title |
Journal of Glaciology |
container_start_page |
1 |
op_container_end_page |
18 |
_version_ |
1774712267511693312 |