Surface accumulation in Northern Central Greenland during the last 300 years
The internal stratigraphy of snow and ice as imaged by ground-penetrating radar may serve as a source of information on past accumulation. This study presents results from two ground-based radar surveys conducted in Greenland in 2007 and 2015, respectively. The first survey was conducted during the...
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ftawi:oai:epic.awi.de:52914 2023-05-15T13:29:48+02:00 Surface accumulation in Northern Central Greenland during the last 300 years Karlsson, Nanna B. Razik, Sebastian Hörhold, Maria Winter, Anna Steinhage, Daniel Binder, Tobias Eisen, Olaf 2020 application/pdf https://epic.awi.de/id/eprint/52914/ https://epic.awi.de/id/eprint/52914/1/surface_accumulation_in_northern_central_greenland_during_the_last_300_years.pdf https://hdl.handle.net/10013/epic.0fd2328e-1588-4320-9946-53a51625ea01 https://hdl.handle.net/ unknown https://epic.awi.de/id/eprint/52914/1/surface_accumulation_in_northern_central_greenland_during_the_last_300_years.pdf https://hdl.handle.net/ Karlsson, N. B. , Razik, S. , Hörhold, M. orcid:0000-0002-9110-0909 , Winter, A. , Steinhage, D. orcid:0000-0003-4737-9751 , Binder, T. and Eisen, O. orcid:0000-0002-6380-962X (2020) Surface accumulation in Northern Central Greenland during the last 300 years , Annals of Glaciology, 61 (81), pp. 214-224 . doi:10.1017/aog.2020.30 <https://doi.org/10.1017/aog.2020.30> , hdl:10013/epic.0fd2328e-1588-4320-9946-53a51625ea01 EPIC3Annals of Glaciology, 61(81), pp. 214-224, ISSN: 0260-3055 Article isiRev 2020 ftawi https://doi.org/10.1017/aog.2020.30 2021-12-24T15:45:53Z The internal stratigraphy of snow and ice as imaged by ground-penetrating radar may serve as a source of information on past accumulation. This study presents results from two ground-based radar surveys conducted in Greenland in 2007 and 2015, respectively. The first survey was conducted during the traverse from the ice-core station NGRIP (North Greenland Ice Core Project) to the ice-core station NEEM (North Greenland Eemian Ice Drilling). The second survey was carried out during the traverse from NEEM to the ice-core station EGRIP (East Greenland Ice Core Project) and then onwards to Summit Station. The total length of the radar profiles is 1427 km. From the radar data, we retrieve the large-scale spatial variation of the accumulation rates in the interior of the ice sheet. The accumulation rates range from 0.11 to 0.26 m a−1 ice equivalent with the lowest values found in the northeastern sector towards EGRIP. We find no evidence of temporal or spatial changes in accumulation rates when comparing the 150-year average accumulation rates with the 321-year average accumulation rates. Comparisons with regional climate models reveal that the models underestimate accumulation rates by up to 35% in northeastern Greenland. Our results serve as a robust baseline to detect present changes in either surface accumulation rates or patterns. Article in Journal/Newspaper Annals of Glaciology East Greenland East Greenland Ice-core Project Greenland Greenland ice core Greenland Ice core Project ice core Ice Sheet NGRIP North Greenland North Greenland Ice Core Project Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Greenland Annals of Glaciology 61 81 214 224 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The internal stratigraphy of snow and ice as imaged by ground-penetrating radar may serve as a source of information on past accumulation. This study presents results from two ground-based radar surveys conducted in Greenland in 2007 and 2015, respectively. The first survey was conducted during the traverse from the ice-core station NGRIP (North Greenland Ice Core Project) to the ice-core station NEEM (North Greenland Eemian Ice Drilling). The second survey was carried out during the traverse from NEEM to the ice-core station EGRIP (East Greenland Ice Core Project) and then onwards to Summit Station. The total length of the radar profiles is 1427 km. From the radar data, we retrieve the large-scale spatial variation of the accumulation rates in the interior of the ice sheet. The accumulation rates range from 0.11 to 0.26 m a−1 ice equivalent with the lowest values found in the northeastern sector towards EGRIP. We find no evidence of temporal or spatial changes in accumulation rates when comparing the 150-year average accumulation rates with the 321-year average accumulation rates. Comparisons with regional climate models reveal that the models underestimate accumulation rates by up to 35% in northeastern Greenland. Our results serve as a robust baseline to detect present changes in either surface accumulation rates or patterns. |
format |
Article in Journal/Newspaper |
author |
Karlsson, Nanna B. Razik, Sebastian Hörhold, Maria Winter, Anna Steinhage, Daniel Binder, Tobias Eisen, Olaf |
spellingShingle |
Karlsson, Nanna B. Razik, Sebastian Hörhold, Maria Winter, Anna Steinhage, Daniel Binder, Tobias Eisen, Olaf Surface accumulation in Northern Central Greenland during the last 300 years |
author_facet |
Karlsson, Nanna B. Razik, Sebastian Hörhold, Maria Winter, Anna Steinhage, Daniel Binder, Tobias Eisen, Olaf |
author_sort |
Karlsson, Nanna B. |
title |
Surface accumulation in Northern Central Greenland during the last 300 years |
title_short |
Surface accumulation in Northern Central Greenland during the last 300 years |
title_full |
Surface accumulation in Northern Central Greenland during the last 300 years |
title_fullStr |
Surface accumulation in Northern Central Greenland during the last 300 years |
title_full_unstemmed |
Surface accumulation in Northern Central Greenland during the last 300 years |
title_sort |
surface accumulation in northern central greenland during the last 300 years |
publishDate |
2020 |
url |
https://epic.awi.de/id/eprint/52914/ https://epic.awi.de/id/eprint/52914/1/surface_accumulation_in_northern_central_greenland_during_the_last_300_years.pdf https://hdl.handle.net/10013/epic.0fd2328e-1588-4320-9946-53a51625ea01 https://hdl.handle.net/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Annals of Glaciology East Greenland East Greenland Ice-core Project Greenland Greenland ice core Greenland Ice core Project ice core Ice Sheet NGRIP North Greenland North Greenland Ice Core Project |
genre_facet |
Annals of Glaciology East Greenland East Greenland Ice-core Project Greenland Greenland ice core Greenland Ice core Project ice core Ice Sheet NGRIP North Greenland North Greenland Ice Core Project |
op_source |
EPIC3Annals of Glaciology, 61(81), pp. 214-224, ISSN: 0260-3055 |
op_relation |
https://epic.awi.de/id/eprint/52914/1/surface_accumulation_in_northern_central_greenland_during_the_last_300_years.pdf https://hdl.handle.net/ Karlsson, N. B. , Razik, S. , Hörhold, M. orcid:0000-0002-9110-0909 , Winter, A. , Steinhage, D. orcid:0000-0003-4737-9751 , Binder, T. and Eisen, O. orcid:0000-0002-6380-962X (2020) Surface accumulation in Northern Central Greenland during the last 300 years , Annals of Glaciology, 61 (81), pp. 214-224 . doi:10.1017/aog.2020.30 <https://doi.org/10.1017/aog.2020.30> , hdl:10013/epic.0fd2328e-1588-4320-9946-53a51625ea01 |
op_doi |
https://doi.org/10.1017/aog.2020.30 |
container_title |
Annals of Glaciology |
container_volume |
61 |
container_issue |
81 |
container_start_page |
214 |
op_container_end_page |
224 |
_version_ |
1766003210451943424 |