A Snapshot on the Buildup of the Stable Water Isotopic Signal in the Upper Snowpack at EastGRIP on the Greenland Ice Sheet
The stable water isotopic composition in firn and ice cores provides valuable information on past climatic conditions. Because of uneven accumulation and post-depositional modifications on local spatial scales up to hundreds of meters, time series derived from adjacent cores differ significantly and...
Published in: | Journal of Geophysical Research: Earth Surface |
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American Geophysical Union (AGU)
2023
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Online Access: | https://epic.awi.de/id/eprint/58703/ https://epic.awi.de/id/eprint/58703/1/JGR%20Earth%20Surface%20-%202023%20-%20Zuhr%20-%20A%20Snapshot%20on%20the%20Buildup%20of%20the%20Stable%20Water%20Isotopic%20Signal%20in%20the%20Upper%20Snowpack%20at.pdf https://doi.org/10.1029/2022jf006767 https://hdl.handle.net/10013/epic.3ef059ad-2c15-445d-8947-7e2b94c55ebf |
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ftawi:oai:epic.awi.de:58703 2024-05-19T07:39:37+00:00 A Snapshot on the Buildup of the Stable Water Isotopic Signal in the Upper Snowpack at EastGRIP on the Greenland Ice Sheet Zuhr, Alexandra M Wahl, Sonja Steen‐Larsen, Hans Christian Hörhold, Maria Meyer, Hanno Laepple, Thomas 2023-02 application/pdf https://epic.awi.de/id/eprint/58703/ https://epic.awi.de/id/eprint/58703/1/JGR%20Earth%20Surface%20-%202023%20-%20Zuhr%20-%20A%20Snapshot%20on%20the%20Buildup%20of%20the%20Stable%20Water%20Isotopic%20Signal%20in%20the%20Upper%20Snowpack%20at.pdf https://doi.org/10.1029/2022jf006767 https://hdl.handle.net/10013/epic.3ef059ad-2c15-445d-8947-7e2b94c55ebf unknown American Geophysical Union (AGU) https://epic.awi.de/id/eprint/58703/1/JGR%20Earth%20Surface%20-%202023%20-%20Zuhr%20-%20A%20Snapshot%20on%20the%20Buildup%20of%20the%20Stable%20Water%20Isotopic%20Signal%20in%20the%20Upper%20Snowpack%20at.pdf Zuhr, A. M. orcid:0000-0002-3861-365X , Wahl, S. , Steen‐Larsen, H. C. , Hörhold, M. orcid:0000-0002-9110-0909 , Meyer, H. orcid:0000-0003-4129-4706 and Laepple, T. orcid:0000-0001-8108-7520 (2023) A Snapshot on the Buildup of the Stable Water Isotopic Signal in the Upper Snowpack at EastGRIP on the Greenland Ice Sheet , Journal of Geophysical Research Earth Surface, 128 (2) . doi:10.1029/2022jf006767 <https://doi.org/10.1029/2022jf006767> , hdl:10013/epic.3ef059ad-2c15-445d-8947-7e2b94c55ebf EPIC3Journal of Geophysical Research Earth Surface, American Geophysical Union (AGU), 128(2), ISSN: 2169-9003 Article isiRev 2023 ftawi https://doi.org/10.1029/2022jf006767 2024-04-30T23:35:56Z The stable water isotopic composition in firn and ice cores provides valuable information on past climatic conditions. Because of uneven accumulation and post-depositional modifications on local spatial scales up to hundreds of meters, time series derived from adjacent cores differ significantly and do not directly reflect the temporal evolution of the precipitated snow isotopic signal. Hence, a characterization of how the isotopic profile in the snow develops is needed to reliably interpret the isotopic variability in firn and ice cores. By combining digital elevation models of the snow surface and repeated high-resolution snow sampling for stable water isotope measurements of a transect at the East Greenland Ice-core Project campsite on the Greenland Ice Sheet, we are able to visualize the buildup and post-depositional changes of the upper snowpack across one summer season. To this end, 30 cm deep snow profiles were sampled on six dates at 20 adjacent locations along a 40 m transect. Near-daily photogrammetry provided snow height information for the same transect. Our data shows that erosion and redeposition of the original snowfall lead to a complex stratification in the δ18O signature. Post-depositional processes through vapor-snow exchange affect the near surface snow with d-excess showing a decrease in surface and near-surface layers. Our data suggests that the interplay of stratigraphic noise, accumulation intermittency, and local post-depositional processes form the proxy signal in the upper snowpack. Article in Journal/Newspaper East Greenland East Greenland Ice-core Project Greenland Greenland ice core Greenland Ice core Project ice core Ice Sheet Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Journal of Geophysical Research: Earth Surface 128 2 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The stable water isotopic composition in firn and ice cores provides valuable information on past climatic conditions. Because of uneven accumulation and post-depositional modifications on local spatial scales up to hundreds of meters, time series derived from adjacent cores differ significantly and do not directly reflect the temporal evolution of the precipitated snow isotopic signal. Hence, a characterization of how the isotopic profile in the snow develops is needed to reliably interpret the isotopic variability in firn and ice cores. By combining digital elevation models of the snow surface and repeated high-resolution snow sampling for stable water isotope measurements of a transect at the East Greenland Ice-core Project campsite on the Greenland Ice Sheet, we are able to visualize the buildup and post-depositional changes of the upper snowpack across one summer season. To this end, 30 cm deep snow profiles were sampled on six dates at 20 adjacent locations along a 40 m transect. Near-daily photogrammetry provided snow height information for the same transect. Our data shows that erosion and redeposition of the original snowfall lead to a complex stratification in the δ18O signature. Post-depositional processes through vapor-snow exchange affect the near surface snow with d-excess showing a decrease in surface and near-surface layers. Our data suggests that the interplay of stratigraphic noise, accumulation intermittency, and local post-depositional processes form the proxy signal in the upper snowpack. |
format |
Article in Journal/Newspaper |
author |
Zuhr, Alexandra M Wahl, Sonja Steen‐Larsen, Hans Christian Hörhold, Maria Meyer, Hanno Laepple, Thomas |
spellingShingle |
Zuhr, Alexandra M Wahl, Sonja Steen‐Larsen, Hans Christian Hörhold, Maria Meyer, Hanno Laepple, Thomas A Snapshot on the Buildup of the Stable Water Isotopic Signal in the Upper Snowpack at EastGRIP on the Greenland Ice Sheet |
author_facet |
Zuhr, Alexandra M Wahl, Sonja Steen‐Larsen, Hans Christian Hörhold, Maria Meyer, Hanno Laepple, Thomas |
author_sort |
Zuhr, Alexandra M |
title |
A Snapshot on the Buildup of the Stable Water Isotopic Signal in the Upper Snowpack at EastGRIP on the Greenland Ice Sheet |
title_short |
A Snapshot on the Buildup of the Stable Water Isotopic Signal in the Upper Snowpack at EastGRIP on the Greenland Ice Sheet |
title_full |
A Snapshot on the Buildup of the Stable Water Isotopic Signal in the Upper Snowpack at EastGRIP on the Greenland Ice Sheet |
title_fullStr |
A Snapshot on the Buildup of the Stable Water Isotopic Signal in the Upper Snowpack at EastGRIP on the Greenland Ice Sheet |
title_full_unstemmed |
A Snapshot on the Buildup of the Stable Water Isotopic Signal in the Upper Snowpack at EastGRIP on the Greenland Ice Sheet |
title_sort |
snapshot on the buildup of the stable water isotopic signal in the upper snowpack at eastgrip on the greenland ice sheet |
publisher |
American Geophysical Union (AGU) |
publishDate |
2023 |
url |
https://epic.awi.de/id/eprint/58703/ https://epic.awi.de/id/eprint/58703/1/JGR%20Earth%20Surface%20-%202023%20-%20Zuhr%20-%20A%20Snapshot%20on%20the%20Buildup%20of%20the%20Stable%20Water%20Isotopic%20Signal%20in%20the%20Upper%20Snowpack%20at.pdf https://doi.org/10.1029/2022jf006767 https://hdl.handle.net/10013/epic.3ef059ad-2c15-445d-8947-7e2b94c55ebf |
genre |
East Greenland East Greenland Ice-core Project Greenland Greenland ice core Greenland Ice core Project ice core Ice Sheet |
genre_facet |
East Greenland East Greenland Ice-core Project Greenland Greenland ice core Greenland Ice core Project ice core Ice Sheet |
op_source |
EPIC3Journal of Geophysical Research Earth Surface, American Geophysical Union (AGU), 128(2), ISSN: 2169-9003 |
op_relation |
https://epic.awi.de/id/eprint/58703/1/JGR%20Earth%20Surface%20-%202023%20-%20Zuhr%20-%20A%20Snapshot%20on%20the%20Buildup%20of%20the%20Stable%20Water%20Isotopic%20Signal%20in%20the%20Upper%20Snowpack%20at.pdf Zuhr, A. M. orcid:0000-0002-3861-365X , Wahl, S. , Steen‐Larsen, H. C. , Hörhold, M. orcid:0000-0002-9110-0909 , Meyer, H. orcid:0000-0003-4129-4706 and Laepple, T. orcid:0000-0001-8108-7520 (2023) A Snapshot on the Buildup of the Stable Water Isotopic Signal in the Upper Snowpack at EastGRIP on the Greenland Ice Sheet , Journal of Geophysical Research Earth Surface, 128 (2) . doi:10.1029/2022jf006767 <https://doi.org/10.1029/2022jf006767> , hdl:10013/epic.3ef059ad-2c15-445d-8947-7e2b94c55ebf |
op_doi |
https://doi.org/10.1029/2022jf006767 |
container_title |
Journal of Geophysical Research: Earth Surface |
container_volume |
128 |
container_issue |
2 |
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1799479191116185600 |