A decade (2008–2017) of water stable-isotope composition of precipitation at Concordia Station, East Antarctica
A ten-year record of oxygen and hydrogen isotopic composition of precipitation is here presented: from 2008 to 2017, 1483 daily precipitation samples were collected all-year round on a raised platform at Concordia Station, East Antarctica. Weather data were retrieved from the Italian Antarctic Meteo...
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ftcopernicus:oai:publications.copernicus.org:egusphere116222 2024-09-15T17:44:41+00:00 A decade (2008–2017) of water stable-isotope composition of precipitation at Concordia Station, East Antarctica Dreossi, Giuliano Masiol, Mauro Stenni, Barbara Zannoni, Daniele Scarchilli, Claudio Ciardini, Virginia Casado, Mathieu Landais, Amaëlle Werner, Martin Cauquoin, Alexandre Casasanta, Giampietro Guasta, Massimo Posocco, Vittoria Barbante, Carlo 2023-12-08 application/pdf https://doi.org/10.5194/egusphere-2023-2813 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-2813/ eng eng doi:10.5194/egusphere-2023-2813 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-2813/ eISSN: Text 2023 ftcopernicus https://doi.org/10.5194/egusphere-2023-2813 2024-08-28T05:24:15Z A ten-year record of oxygen and hydrogen isotopic composition of precipitation is here presented: from 2008 to 2017, 1483 daily precipitation samples were collected all-year round on a raised platform at Concordia Station, East Antarctica. Weather data were retrieved from the Italian Antarctic Meteo-Climatological Observatory AWS, while ERA5 was used to estimate total precipitation. The δ-temperature relationships were moderately high for daily data (r 2 =0.63 and 0.64 for δ 18 O and δ 2 H, respectively) and stronger using monthly data (r 2 =0.82 for both δ 18 O and δ 2 H), with a slope of about 0.5 ‰/°C for δ 18 O/T AWS (3.5 ‰/°C for δ 18 O/T AWS ), which remains consistent also using annual averages. The isotopic composition of precipitation is the input signal of the snow/ice system and this dataset will be useful to improve the interpretation of paleoclimate records and promote a better understanding of the post-depositional processes affecting the isotopic signal in ice cores. Isotope-enabled GCM ECHAM6-wiso output for the isotopic composition of precipitation was also compared to experimental data, showing moderately good relationships for δ 18 O and δ 2 H, but not for d-excess, nonetheless marking a substantial improvement from the previous release of the model. Text Antarc* Antarctic Antarctica East Antarctica Copernicus Publications: E-Journals |
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Copernicus Publications: E-Journals |
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ftcopernicus |
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English |
description |
A ten-year record of oxygen and hydrogen isotopic composition of precipitation is here presented: from 2008 to 2017, 1483 daily precipitation samples were collected all-year round on a raised platform at Concordia Station, East Antarctica. Weather data were retrieved from the Italian Antarctic Meteo-Climatological Observatory AWS, while ERA5 was used to estimate total precipitation. The δ-temperature relationships were moderately high for daily data (r 2 =0.63 and 0.64 for δ 18 O and δ 2 H, respectively) and stronger using monthly data (r 2 =0.82 for both δ 18 O and δ 2 H), with a slope of about 0.5 ‰/°C for δ 18 O/T AWS (3.5 ‰/°C for δ 18 O/T AWS ), which remains consistent also using annual averages. The isotopic composition of precipitation is the input signal of the snow/ice system and this dataset will be useful to improve the interpretation of paleoclimate records and promote a better understanding of the post-depositional processes affecting the isotopic signal in ice cores. Isotope-enabled GCM ECHAM6-wiso output for the isotopic composition of precipitation was also compared to experimental data, showing moderately good relationships for δ 18 O and δ 2 H, but not for d-excess, nonetheless marking a substantial improvement from the previous release of the model. |
format |
Text |
author |
Dreossi, Giuliano Masiol, Mauro Stenni, Barbara Zannoni, Daniele Scarchilli, Claudio Ciardini, Virginia Casado, Mathieu Landais, Amaëlle Werner, Martin Cauquoin, Alexandre Casasanta, Giampietro Guasta, Massimo Posocco, Vittoria Barbante, Carlo |
spellingShingle |
Dreossi, Giuliano Masiol, Mauro Stenni, Barbara Zannoni, Daniele Scarchilli, Claudio Ciardini, Virginia Casado, Mathieu Landais, Amaëlle Werner, Martin Cauquoin, Alexandre Casasanta, Giampietro Guasta, Massimo Posocco, Vittoria Barbante, Carlo A decade (2008–2017) of water stable-isotope composition of precipitation at Concordia Station, East Antarctica |
author_facet |
Dreossi, Giuliano Masiol, Mauro Stenni, Barbara Zannoni, Daniele Scarchilli, Claudio Ciardini, Virginia Casado, Mathieu Landais, Amaëlle Werner, Martin Cauquoin, Alexandre Casasanta, Giampietro Guasta, Massimo Posocco, Vittoria Barbante, Carlo |
author_sort |
Dreossi, Giuliano |
title |
A decade (2008–2017) of water stable-isotope composition of precipitation at Concordia Station, East Antarctica |
title_short |
A decade (2008–2017) of water stable-isotope composition of precipitation at Concordia Station, East Antarctica |
title_full |
A decade (2008–2017) of water stable-isotope composition of precipitation at Concordia Station, East Antarctica |
title_fullStr |
A decade (2008–2017) of water stable-isotope composition of precipitation at Concordia Station, East Antarctica |
title_full_unstemmed |
A decade (2008–2017) of water stable-isotope composition of precipitation at Concordia Station, East Antarctica |
title_sort |
decade (2008–2017) of water stable-isotope composition of precipitation at concordia station, east antarctica |
publishDate |
2023 |
url |
https://doi.org/10.5194/egusphere-2023-2813 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-2813/ |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_source |
eISSN: |
op_relation |
doi:10.5194/egusphere-2023-2813 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-2813/ |
op_doi |
https://doi.org/10.5194/egusphere-2023-2813 |
_version_ |
1810492343526096896 |