Changes in snow distribution and surface topography following a snowstorm on Antarctic sea ice
Author Posting. © American Geophysical Union, 2016. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Earth Surface 121 (2016): 2172–2191, doi:10.1002/2016JF003893...
Published in: | Journal of Geophysical Research: Earth Surface |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
John Wiley & Sons
2016
|
Subjects: | |
Online Access: | https://hdl.handle.net/1912/8755 |
id |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/8755 |
---|---|
record_format |
openpolar |
spelling |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/8755 2023-05-15T13:48:30+02:00 Changes in snow distribution and surface topography following a snowstorm on Antarctic sea ice Trujillo, Ernesto Leonard, Katherine Maksym, Ted Lehning, Michael 2016-11-15 https://hdl.handle.net/1912/8755 en_US eng John Wiley & Sons https://doi.org/10.1002/2016JF003893 Journal of Geophysical Research: Earth Surface 121 (2016): 2172–2191 https://hdl.handle.net/1912/8755 doi:10.1002/2016JF003893 Journal of Geophysical Research: Earth Surface 121 (2016): 2172–2191 doi:10.1002/2016JF003893 Lidar Sea ice Snow Snow distribution Blowing snow Article 2016 ftwhoas https://doi.org/10.1002/2016JF003893 2022-05-28T22:59:50Z Author Posting. © American Geophysical Union, 2016. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Earth Surface 121 (2016): 2172–2191, doi:10.1002/2016JF003893. Snow distribution over sea ice is an important control on sea ice physical and biological processes. We combine measurements of the atmospheric boundary layer and blowing snow on an Antarctic sea ice floe with terrestrial laser scanning to characterize a typical storm and its influence on the spatial patterns of snow distribution at resolutions of 1–10 cm over an area of 100 m × 100 m. The pre-storm surface exhibits multidirectional elongated snow dunes formed behind aerodynamic obstacles. Newly deposited dunes are elongated parallel to the predominant wind direction during the storm. Snow erosion and deposition occur over 62% and 38% of the area, respectively. Snow deposition volume is more than twice that of erosion (351 m3 versus 158 m3), resulting in a modest increase of 2 ± 1 cm in mean snow depth, indicating a small net mass gain despite large mass relocation. Despite significant local snow depth changes due to deposition and erosion, the statistical distributions of elevation and the two-dimensional correlation functions remain similar to those of the pre-storm surface. Pre-storm and post-storm surfaces also exhibit spectral power law relationships with little change in spectral exponents. These observations suggest that for sea ice floes with mature snow cover features under conditions similar to those observed in this study, spatial statistics and scaling properties of snow surface morphology may be relatively invariant. Such an observation, if confirmed for other ice types and conditions, may be a useful tool for model parameterizations of the subgrid variability of sea ice surfaces. AAD Science Grant Number: 4073; NSF Grant Numbers: OPP-1142075, EAR-0735156; NASA Grant Number: NNX15AC69G; Swiss ... Article in Journal/Newspaper Antarc* Antarctic Sea ice Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Antarctic Journal of Geophysical Research: Earth Surface 121 11 2172 2191 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Lidar Sea ice Snow Snow distribution Blowing snow |
spellingShingle |
Lidar Sea ice Snow Snow distribution Blowing snow Trujillo, Ernesto Leonard, Katherine Maksym, Ted Lehning, Michael Changes in snow distribution and surface topography following a snowstorm on Antarctic sea ice |
topic_facet |
Lidar Sea ice Snow Snow distribution Blowing snow |
description |
Author Posting. © American Geophysical Union, 2016. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Earth Surface 121 (2016): 2172–2191, doi:10.1002/2016JF003893. Snow distribution over sea ice is an important control on sea ice physical and biological processes. We combine measurements of the atmospheric boundary layer and blowing snow on an Antarctic sea ice floe with terrestrial laser scanning to characterize a typical storm and its influence on the spatial patterns of snow distribution at resolutions of 1–10 cm over an area of 100 m × 100 m. The pre-storm surface exhibits multidirectional elongated snow dunes formed behind aerodynamic obstacles. Newly deposited dunes are elongated parallel to the predominant wind direction during the storm. Snow erosion and deposition occur over 62% and 38% of the area, respectively. Snow deposition volume is more than twice that of erosion (351 m3 versus 158 m3), resulting in a modest increase of 2 ± 1 cm in mean snow depth, indicating a small net mass gain despite large mass relocation. Despite significant local snow depth changes due to deposition and erosion, the statistical distributions of elevation and the two-dimensional correlation functions remain similar to those of the pre-storm surface. Pre-storm and post-storm surfaces also exhibit spectral power law relationships with little change in spectral exponents. These observations suggest that for sea ice floes with mature snow cover features under conditions similar to those observed in this study, spatial statistics and scaling properties of snow surface morphology may be relatively invariant. Such an observation, if confirmed for other ice types and conditions, may be a useful tool for model parameterizations of the subgrid variability of sea ice surfaces. AAD Science Grant Number: 4073; NSF Grant Numbers: OPP-1142075, EAR-0735156; NASA Grant Number: NNX15AC69G; Swiss ... |
format |
Article in Journal/Newspaper |
author |
Trujillo, Ernesto Leonard, Katherine Maksym, Ted Lehning, Michael |
author_facet |
Trujillo, Ernesto Leonard, Katherine Maksym, Ted Lehning, Michael |
author_sort |
Trujillo, Ernesto |
title |
Changes in snow distribution and surface topography following a snowstorm on Antarctic sea ice |
title_short |
Changes in snow distribution and surface topography following a snowstorm on Antarctic sea ice |
title_full |
Changes in snow distribution and surface topography following a snowstorm on Antarctic sea ice |
title_fullStr |
Changes in snow distribution and surface topography following a snowstorm on Antarctic sea ice |
title_full_unstemmed |
Changes in snow distribution and surface topography following a snowstorm on Antarctic sea ice |
title_sort |
changes in snow distribution and surface topography following a snowstorm on antarctic sea ice |
publisher |
John Wiley & Sons |
publishDate |
2016 |
url |
https://hdl.handle.net/1912/8755 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Sea ice |
genre_facet |
Antarc* Antarctic Sea ice |
op_source |
Journal of Geophysical Research: Earth Surface 121 (2016): 2172–2191 doi:10.1002/2016JF003893 |
op_relation |
https://doi.org/10.1002/2016JF003893 Journal of Geophysical Research: Earth Surface 121 (2016): 2172–2191 https://hdl.handle.net/1912/8755 doi:10.1002/2016JF003893 |
op_doi |
https://doi.org/10.1002/2016JF003893 |
container_title |
Journal of Geophysical Research: Earth Surface |
container_volume |
121 |
container_issue |
11 |
container_start_page |
2172 |
op_container_end_page |
2191 |
_version_ |
1766249341555572736 |