Airborne Snow Radar Reveals High Spatial Variability in Snow Accumulation Over West Antarctica
Accumulation explains a substantial portion of surface height changes and drives rates of firn compaction across the Antarctic Ice Sheet. Accumulation rates vary strongly over small (<25 km) distances, thereby affecting the representativeness of point measurements (such as ice cores) and complica...
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ftunicolboulder:oai:scholar.colorado.edu:atoc_gradetds-1089 2023-05-15T13:49:37+02:00 Airborne Snow Radar Reveals High Spatial Variability in Snow Accumulation Over West Antarctica Dattler, Marissa Eileen 2019-01-01T08:00:00Z application/pdf https://scholar.colorado.edu/atoc_gradetds/89 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1089&context=atoc_gradetds unknown CU Scholar https://scholar.colorado.edu/atoc_gradetds/89 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1089&context=atoc_gradetds Atmospheric & Oceanic Sciences Graduate Theses & Dissertations airborne radar antarctic ice sheet near-surface winds snow accumulation Geophysics and Seismology Remote Sensing text 2019 ftunicolboulder 2019-07-12T23:29:36Z Accumulation explains a substantial portion of surface height changes and drives rates of firn compaction across the Antarctic Ice Sheet. Accumulation rates vary strongly over small (<25 km) distances, thereby affecting the representativeness of point measurements (such as ice cores) and complicating the derivation of mass changes from observed height changes of the ice sheet. Current atmospheric reanalyses, however, have grid spacings that are too coarse to resolve those variations, resulting in errors in mass change calculations. In this study, we use airborne snow radar observations to construct a new snow accumulation product across large portions of West Antarctica and the Antarctic Peninsula, guided by large-scale reanalysis accumulation. This radar-derived product reveals significant variability in accumulation. Variability in slope in mean wind direction tends to be coincident with variability in accumulation. The relationship between accumulation, topography, and wind confirms that subgrid-scale accumulation variability is driven by snow redistribution by wind. Text Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet West Antarctica University of Colorado, Boulder: CU Scholar Antarctic Antarctic Peninsula The Antarctic West Antarctica |
institution |
Open Polar |
collection |
University of Colorado, Boulder: CU Scholar |
op_collection_id |
ftunicolboulder |
language |
unknown |
topic |
airborne radar antarctic ice sheet near-surface winds snow accumulation Geophysics and Seismology Remote Sensing |
spellingShingle |
airborne radar antarctic ice sheet near-surface winds snow accumulation Geophysics and Seismology Remote Sensing Dattler, Marissa Eileen Airborne Snow Radar Reveals High Spatial Variability in Snow Accumulation Over West Antarctica |
topic_facet |
airborne radar antarctic ice sheet near-surface winds snow accumulation Geophysics and Seismology Remote Sensing |
description |
Accumulation explains a substantial portion of surface height changes and drives rates of firn compaction across the Antarctic Ice Sheet. Accumulation rates vary strongly over small (<25 km) distances, thereby affecting the representativeness of point measurements (such as ice cores) and complicating the derivation of mass changes from observed height changes of the ice sheet. Current atmospheric reanalyses, however, have grid spacings that are too coarse to resolve those variations, resulting in errors in mass change calculations. In this study, we use airborne snow radar observations to construct a new snow accumulation product across large portions of West Antarctica and the Antarctic Peninsula, guided by large-scale reanalysis accumulation. This radar-derived product reveals significant variability in accumulation. Variability in slope in mean wind direction tends to be coincident with variability in accumulation. The relationship between accumulation, topography, and wind confirms that subgrid-scale accumulation variability is driven by snow redistribution by wind. |
format |
Text |
author |
Dattler, Marissa Eileen |
author_facet |
Dattler, Marissa Eileen |
author_sort |
Dattler, Marissa Eileen |
title |
Airborne Snow Radar Reveals High Spatial Variability in Snow Accumulation Over West Antarctica |
title_short |
Airborne Snow Radar Reveals High Spatial Variability in Snow Accumulation Over West Antarctica |
title_full |
Airborne Snow Radar Reveals High Spatial Variability in Snow Accumulation Over West Antarctica |
title_fullStr |
Airborne Snow Radar Reveals High Spatial Variability in Snow Accumulation Over West Antarctica |
title_full_unstemmed |
Airborne Snow Radar Reveals High Spatial Variability in Snow Accumulation Over West Antarctica |
title_sort |
airborne snow radar reveals high spatial variability in snow accumulation over west antarctica |
publisher |
CU Scholar |
publishDate |
2019 |
url |
https://scholar.colorado.edu/atoc_gradetds/89 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1089&context=atoc_gradetds |
geographic |
Antarctic Antarctic Peninsula The Antarctic West Antarctica |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic West Antarctica |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet West Antarctica |
op_source |
Atmospheric & Oceanic Sciences Graduate Theses & Dissertations |
op_relation |
https://scholar.colorado.edu/atoc_gradetds/89 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1089&context=atoc_gradetds |
_version_ |
1766251886831206400 |