Oxygen isotope variability in snow from western Dronning Maud Land, Antarctica and its relation to temperature
This paper presents delta(18)O records from snow pits from four locations in Dronning Maud Land, Antarctica that contain at least four annual cycles. The aim of the study was to analyse in detail these records as well as the prevailing temperatures during accumulation in order to infer to what exten...
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Format: | Article in Journal/Newspaper |
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ftunigroningenpu:oai:pure.rug.nl:publications/c1da51d7-068a-44b7-8cc6-2d2523e7252c 2024-06-02T07:58:28+00:00 Oxygen isotope variability in snow from western Dronning Maud Land, Antarctica and its relation to temperature Helsen, MM Van de Wal, RSW Van den Broeke, MR Van As, D Meijer, HAJ Reijmer, CH 2005-11 application/pdf https://hdl.handle.net/11370/c1da51d7-068a-44b7-8cc6-2d2523e7252c https://research.rug.nl/en/publications/c1da51d7-068a-44b7-8cc6-2d2523e7252c https://doi.org/10.1111/j.1600-0889.2005.00162.x https://pure.rug.nl/ws/files/9827040/2005TellusBHelsen.pdf eng eng https://research.rug.nl/en/publications/c1da51d7-068a-44b7-8cc6-2d2523e7252c info:eu-repo/semantics/openAccess Helsen , MM , Van de Wal , RSW , Van den Broeke , MR , Van As , D , Meijer , HAJ & Reijmer , CH 2005 , ' Oxygen isotope variability in snow from western Dronning Maud Land, Antarctica and its relation to temperature ' , Tellus. Series B: Chemical and Physical Meteorology , vol. 57 , no. 5 , pp. 423-435 . https://doi.org/10.1111/j.1600-0889.2005.00162.x SURFACE MASS-BALANCE ICE-CORE PRECIPITATION ACCUMULATION GREENLAND CLIMATE FIRN RECONSTRUCTION AMUNDSENISEN SEASONALITY article 2005 ftunigroningenpu https://doi.org/10.1111/j.1600-0889.2005.00162.x 2024-05-07T17:51:13Z This paper presents delta(18)O records from snow pits from four locations in Dronning Maud Land, Antarctica that contain at least four annual cycles. The aim of the study was to analyse in detail these records as well as the prevailing temperatures during accumulation in order to infer to what extent isotopic composition in this area can be interpreted as temperature information. The original seasonal amplitudes of the isotope records were reconstructed by use of a simple back-diffusion model. Automatic weather station data were used to describe the accumulation history and the near-surface temperatures; the temperatures at the atmospheric level of snow formation were inferred from a regional climate model. The results show that the strongly intermittent nature of the accumulation in this area can result in the exclusion of entire seasons from the isotope records. The temperature records also reveal that the oxygen isotope records in these snow pits are biased towards higher temperatures, since snowfall conditions are associated with higher temperatures. This effect is greatest at low temperatures. A comparison between the seasonal extreme isotopic and temperature values points out that on timescales of seasons to several years, isotopic variability cannot be interpreted with confidence as temperature changes at the accumulation sites. Article in Journal/Newspaper Antarc* Antarctica Dronning Maud Land Greenland ice core University of Groningen research database Amundsenisen ENVELOPE(15.571,15.571,77.286,77.286) Dronning Maud Land Greenland Tellus B 57 5 423 435 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
SURFACE MASS-BALANCE ICE-CORE PRECIPITATION ACCUMULATION GREENLAND CLIMATE FIRN RECONSTRUCTION AMUNDSENISEN SEASONALITY |
spellingShingle |
SURFACE MASS-BALANCE ICE-CORE PRECIPITATION ACCUMULATION GREENLAND CLIMATE FIRN RECONSTRUCTION AMUNDSENISEN SEASONALITY Helsen, MM Van de Wal, RSW Van den Broeke, MR Van As, D Meijer, HAJ Reijmer, CH Oxygen isotope variability in snow from western Dronning Maud Land, Antarctica and its relation to temperature |
topic_facet |
SURFACE MASS-BALANCE ICE-CORE PRECIPITATION ACCUMULATION GREENLAND CLIMATE FIRN RECONSTRUCTION AMUNDSENISEN SEASONALITY |
description |
This paper presents delta(18)O records from snow pits from four locations in Dronning Maud Land, Antarctica that contain at least four annual cycles. The aim of the study was to analyse in detail these records as well as the prevailing temperatures during accumulation in order to infer to what extent isotopic composition in this area can be interpreted as temperature information. The original seasonal amplitudes of the isotope records were reconstructed by use of a simple back-diffusion model. Automatic weather station data were used to describe the accumulation history and the near-surface temperatures; the temperatures at the atmospheric level of snow formation were inferred from a regional climate model. The results show that the strongly intermittent nature of the accumulation in this area can result in the exclusion of entire seasons from the isotope records. The temperature records also reveal that the oxygen isotope records in these snow pits are biased towards higher temperatures, since snowfall conditions are associated with higher temperatures. This effect is greatest at low temperatures. A comparison between the seasonal extreme isotopic and temperature values points out that on timescales of seasons to several years, isotopic variability cannot be interpreted with confidence as temperature changes at the accumulation sites. |
format |
Article in Journal/Newspaper |
author |
Helsen, MM Van de Wal, RSW Van den Broeke, MR Van As, D Meijer, HAJ Reijmer, CH |
author_facet |
Helsen, MM Van de Wal, RSW Van den Broeke, MR Van As, D Meijer, HAJ Reijmer, CH |
author_sort |
Helsen, MM |
title |
Oxygen isotope variability in snow from western Dronning Maud Land, Antarctica and its relation to temperature |
title_short |
Oxygen isotope variability in snow from western Dronning Maud Land, Antarctica and its relation to temperature |
title_full |
Oxygen isotope variability in snow from western Dronning Maud Land, Antarctica and its relation to temperature |
title_fullStr |
Oxygen isotope variability in snow from western Dronning Maud Land, Antarctica and its relation to temperature |
title_full_unstemmed |
Oxygen isotope variability in snow from western Dronning Maud Land, Antarctica and its relation to temperature |
title_sort |
oxygen isotope variability in snow from western dronning maud land, antarctica and its relation to temperature |
publishDate |
2005 |
url |
https://hdl.handle.net/11370/c1da51d7-068a-44b7-8cc6-2d2523e7252c https://research.rug.nl/en/publications/c1da51d7-068a-44b7-8cc6-2d2523e7252c https://doi.org/10.1111/j.1600-0889.2005.00162.x https://pure.rug.nl/ws/files/9827040/2005TellusBHelsen.pdf |
long_lat |
ENVELOPE(15.571,15.571,77.286,77.286) |
geographic |
Amundsenisen Dronning Maud Land Greenland |
geographic_facet |
Amundsenisen Dronning Maud Land Greenland |
genre |
Antarc* Antarctica Dronning Maud Land Greenland ice core |
genre_facet |
Antarc* Antarctica Dronning Maud Land Greenland ice core |
op_source |
Helsen , MM , Van de Wal , RSW , Van den Broeke , MR , Van As , D , Meijer , HAJ & Reijmer , CH 2005 , ' Oxygen isotope variability in snow from western Dronning Maud Land, Antarctica and its relation to temperature ' , Tellus. Series B: Chemical and Physical Meteorology , vol. 57 , no. 5 , pp. 423-435 . https://doi.org/10.1111/j.1600-0889.2005.00162.x |
op_relation |
https://research.rug.nl/en/publications/c1da51d7-068a-44b7-8cc6-2d2523e7252c |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1111/j.1600-0889.2005.00162.x |
container_title |
Tellus B |
container_volume |
57 |
container_issue |
5 |
container_start_page |
423 |
op_container_end_page |
435 |
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1800741828107960320 |