Water Isotopic Signature of Surface Snow Metamorphism in Antarctica
Water isotope ratios of ice cores are a key source of information on past temperatures. Through fractionation within the hydrological cycle, temperature is imprinted in the water isotopic composition of snowfalls. However, this signal of climatic interest is modified after deposition when snow remai...
Published in: | Geophysical Research Letters |
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Online Access: | http://hdl.handle.net/10278/3743000 https://doi.org/10.1029/2021GL093382 |
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ftuniveneziairis:oai:iris.unive.it:10278/3743000 2024-04-14T08:04:24+00:00 Water Isotopic Signature of Surface Snow Metamorphism in Antarctica Casado, Mathieu Landais, Amaelle Picard, Ghislain Arnaud, Laurent Dreossi, Giuliano Stenni, Barbara Prié, Frederic Casado, Mathieu Landais, Amaelle Picard, Ghislain Arnaud, Laurent Dreossi, Giuliano Stenni, Barbara Prié, Frederic 2021 http://hdl.handle.net/10278/3743000 https://doi.org/10.1029/2021GL093382 unknown info:eu-repo/semantics/altIdentifier/wos/WOS:000694653200029 volume:48 issue:17 journal:GEOPHYSICAL RESEARCH LETTERS http://hdl.handle.net/10278/3743000 doi:10.1029/2021GL093382 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85114747480 info:eu-repo/semantics/openAccess exce Ice core metamorhism Paleoclimate water isotope Settore GEO/08 - Geochimica e Vulcanologia info:eu-repo/semantics/article 2021 ftuniveneziairis https://doi.org/10.1029/2021GL093382 2024-03-21T18:18:29Z Water isotope ratios of ice cores are a key source of information on past temperatures. Through fractionation within the hydrological cycle, temperature is imprinted in the water isotopic composition of snowfalls. However, this signal of climatic interest is modified after deposition when snow remains at the surface exposed to the atmosphere. Comparing time series of surface snow isotopic composition at Dome C with satellite observations of surface snow metamorphism, we found that long summer periods without precipitation favor surface snow metamorphism altering the surface snow isotopic composition. Using excess parameters (combining D,17O, and 18O fractions) allow the identification of this alteration caused by sublimation and condensation of surface hoar. The combined measurement of all three isotopic compositions could help identifying ice core sections influenced by snow metamorphism in sites with very low snow accumulation. Article in Journal/Newspaper Antarc* Antarctica ice core Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Geophysical Research Letters 48 17 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
unknown |
topic |
exce Ice core metamorhism Paleoclimate water isotope Settore GEO/08 - Geochimica e Vulcanologia |
spellingShingle |
exce Ice core metamorhism Paleoclimate water isotope Settore GEO/08 - Geochimica e Vulcanologia Casado, Mathieu Landais, Amaelle Picard, Ghislain Arnaud, Laurent Dreossi, Giuliano Stenni, Barbara Prié, Frederic Water Isotopic Signature of Surface Snow Metamorphism in Antarctica |
topic_facet |
exce Ice core metamorhism Paleoclimate water isotope Settore GEO/08 - Geochimica e Vulcanologia |
description |
Water isotope ratios of ice cores are a key source of information on past temperatures. Through fractionation within the hydrological cycle, temperature is imprinted in the water isotopic composition of snowfalls. However, this signal of climatic interest is modified after deposition when snow remains at the surface exposed to the atmosphere. Comparing time series of surface snow isotopic composition at Dome C with satellite observations of surface snow metamorphism, we found that long summer periods without precipitation favor surface snow metamorphism altering the surface snow isotopic composition. Using excess parameters (combining D,17O, and 18O fractions) allow the identification of this alteration caused by sublimation and condensation of surface hoar. The combined measurement of all three isotopic compositions could help identifying ice core sections influenced by snow metamorphism in sites with very low snow accumulation. |
author2 |
Casado, Mathieu Landais, Amaelle Picard, Ghislain Arnaud, Laurent Dreossi, Giuliano Stenni, Barbara Prié, Frederic |
format |
Article in Journal/Newspaper |
author |
Casado, Mathieu Landais, Amaelle Picard, Ghislain Arnaud, Laurent Dreossi, Giuliano Stenni, Barbara Prié, Frederic |
author_facet |
Casado, Mathieu Landais, Amaelle Picard, Ghislain Arnaud, Laurent Dreossi, Giuliano Stenni, Barbara Prié, Frederic |
author_sort |
Casado, Mathieu |
title |
Water Isotopic Signature of Surface Snow Metamorphism in Antarctica |
title_short |
Water Isotopic Signature of Surface Snow Metamorphism in Antarctica |
title_full |
Water Isotopic Signature of Surface Snow Metamorphism in Antarctica |
title_fullStr |
Water Isotopic Signature of Surface Snow Metamorphism in Antarctica |
title_full_unstemmed |
Water Isotopic Signature of Surface Snow Metamorphism in Antarctica |
title_sort |
water isotopic signature of surface snow metamorphism in antarctica |
publishDate |
2021 |
url |
http://hdl.handle.net/10278/3743000 https://doi.org/10.1029/2021GL093382 |
genre |
Antarc* Antarctica ice core |
genre_facet |
Antarc* Antarctica ice core |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000694653200029 volume:48 issue:17 journal:GEOPHYSICAL RESEARCH LETTERS http://hdl.handle.net/10278/3743000 doi:10.1029/2021GL093382 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85114747480 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2021GL093382 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
17 |
_version_ |
1796300899672391680 |