Three-year monitoring of stable isotopes of precipitation at ConcordiaStation, East Antarctica
Past temperature reconstructions from Antarctic ice cores require a good quantification and understanding of the relationship between snow isotopic composition and 2 m air or inversion (condensation) temperature. Here, we focus on the French–Italian Concordia Station, central East Antarctic plateau,...
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ftsubgoettingen:oai:goescholar:1/13974 2023-05-15T13:44:06+02:00 Three-year monitoring of stable isotopes of precipitation at ConcordiaStation, East Antarctica Stenni, Barbara Scarchilli, Claudio Masson-Delmotte, Valerie Schlosser, Elisabeth Ciardini, Virginia Dreossi, Giuliano Grigioni, Paolo Bonazza, Mattia Cagnati, Anselmo Karlicek, Daniele Risi, Camille Udisti, Roberto Valt, Mauro 2016 http://resolver.sub.uni-goettingen.de/purl?gs-1/13974 https://doi.org/10.5194/tc-10-2415-2016 eng eng 1994-0424 http://resolver.sub.uni-goettingen.de/purl?gs-1/13974 doi:10.5194/tc-10-2415-2016 openAccess https://creativecommons.org/licenses/by/3.0/ CC-BY stable isotopes Concordia Station Antarctica journalArticle publishedVersion 2016 ftsubgoettingen https://doi.org/10.5194/tc-10-2415-2016 2022-11-02T09:28:51Z Past temperature reconstructions from Antarctic ice cores require a good quantification and understanding of the relationship between snow isotopic composition and 2 m air or inversion (condensation) temperature. Here, we focus on the French–Italian Concordia Station, central East Antarctic plateau, where the European Project for Ice Coring in Antarctica (EPICA) Dome C ice cores were drilled. We provide a multi-year record of daily precipitation types identified from crystal morphologies, daily precipitation amounts and isotopic composition. Our sampling period (2008–2010) encompasses a warmer year (2009, +1.2 °C with respect to 2 m air temperature long-term average 1996–2010), with larger total precipitation and snowfall amounts (14 and 76 % above sampling period average, respectively), and a colder and drier year (2010, −1.8 °C, 4 % below long-term and sampling period averages, respectively) with larger diamond dust amounts (49 % above sampling period average). Relationships between local meteorological data and precipitation isotopic composition are investigated at daily, monthly and inter-annual scale, and for the different types of precipitation. Water stable isotopes are more closely related to 2 m air temperature than to inversion temperature at all timescales (e.g. R2 = 0.63 and 0.44, respectively for daily values). The slope of the temporal relationship between daily δ18O and 2 m air temperature is approximately 2 times smaller (0.49 ‰ °C−1) than the average Antarctic spatial (0.8 ‰ °C−1) relationship initially used for the interpretation of EPICA Dome C records. In accordance with results from precipitation monitoring at Vostok and Dome F, deuterium excess is anti-correlated with δ18O at daily and monthly scales, reaching maximum values in winter. Hoar frost precipitation samples have a specific fingerprint with more depleted δ18O (about 5 ‰ below average) and higher deuterium excess (about 8 ‰ above average) values than other precipitation types. These datasets provide a basis for comparison with ... Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica EPICA Georg-August-Universität Göttingen: GoeScholar Antarctic East Antarctica Concordia Station ENVELOPE(123.333,123.333,-75.100,-75.100) Dome F ENVELOPE(39.700,39.700,-77.317,-77.317) The Cryosphere 10 5 2415 2428 |
institution |
Open Polar |
collection |
Georg-August-Universität Göttingen: GoeScholar |
op_collection_id |
ftsubgoettingen |
language |
English |
topic |
stable isotopes Concordia Station Antarctica |
spellingShingle |
stable isotopes Concordia Station Antarctica Stenni, Barbara Scarchilli, Claudio Masson-Delmotte, Valerie Schlosser, Elisabeth Ciardini, Virginia Dreossi, Giuliano Grigioni, Paolo Bonazza, Mattia Cagnati, Anselmo Karlicek, Daniele Risi, Camille Udisti, Roberto Valt, Mauro Three-year monitoring of stable isotopes of precipitation at ConcordiaStation, East Antarctica |
topic_facet |
stable isotopes Concordia Station Antarctica |
description |
Past temperature reconstructions from Antarctic ice cores require a good quantification and understanding of the relationship between snow isotopic composition and 2 m air or inversion (condensation) temperature. Here, we focus on the French–Italian Concordia Station, central East Antarctic plateau, where the European Project for Ice Coring in Antarctica (EPICA) Dome C ice cores were drilled. We provide a multi-year record of daily precipitation types identified from crystal morphologies, daily precipitation amounts and isotopic composition. Our sampling period (2008–2010) encompasses a warmer year (2009, +1.2 °C with respect to 2 m air temperature long-term average 1996–2010), with larger total precipitation and snowfall amounts (14 and 76 % above sampling period average, respectively), and a colder and drier year (2010, −1.8 °C, 4 % below long-term and sampling period averages, respectively) with larger diamond dust amounts (49 % above sampling period average). Relationships between local meteorological data and precipitation isotopic composition are investigated at daily, monthly and inter-annual scale, and for the different types of precipitation. Water stable isotopes are more closely related to 2 m air temperature than to inversion temperature at all timescales (e.g. R2 = 0.63 and 0.44, respectively for daily values). The slope of the temporal relationship between daily δ18O and 2 m air temperature is approximately 2 times smaller (0.49 ‰ °C−1) than the average Antarctic spatial (0.8 ‰ °C−1) relationship initially used for the interpretation of EPICA Dome C records. In accordance with results from precipitation monitoring at Vostok and Dome F, deuterium excess is anti-correlated with δ18O at daily and monthly scales, reaching maximum values in winter. Hoar frost precipitation samples have a specific fingerprint with more depleted δ18O (about 5 ‰ below average) and higher deuterium excess (about 8 ‰ above average) values than other precipitation types. These datasets provide a basis for comparison with ... |
format |
Article in Journal/Newspaper |
author |
Stenni, Barbara Scarchilli, Claudio Masson-Delmotte, Valerie Schlosser, Elisabeth Ciardini, Virginia Dreossi, Giuliano Grigioni, Paolo Bonazza, Mattia Cagnati, Anselmo Karlicek, Daniele Risi, Camille Udisti, Roberto Valt, Mauro |
author_facet |
Stenni, Barbara Scarchilli, Claudio Masson-Delmotte, Valerie Schlosser, Elisabeth Ciardini, Virginia Dreossi, Giuliano Grigioni, Paolo Bonazza, Mattia Cagnati, Anselmo Karlicek, Daniele Risi, Camille Udisti, Roberto Valt, Mauro |
author_sort |
Stenni, Barbara |
title |
Three-year monitoring of stable isotopes of precipitation at ConcordiaStation, East Antarctica |
title_short |
Three-year monitoring of stable isotopes of precipitation at ConcordiaStation, East Antarctica |
title_full |
Three-year monitoring of stable isotopes of precipitation at ConcordiaStation, East Antarctica |
title_fullStr |
Three-year monitoring of stable isotopes of precipitation at ConcordiaStation, East Antarctica |
title_full_unstemmed |
Three-year monitoring of stable isotopes of precipitation at ConcordiaStation, East Antarctica |
title_sort |
three-year monitoring of stable isotopes of precipitation at concordiastation, east antarctica |
publishDate |
2016 |
url |
http://resolver.sub.uni-goettingen.de/purl?gs-1/13974 https://doi.org/10.5194/tc-10-2415-2016 |
long_lat |
ENVELOPE(123.333,123.333,-75.100,-75.100) ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
Antarctic East Antarctica Concordia Station Dome F |
geographic_facet |
Antarctic East Antarctica Concordia Station Dome F |
genre |
Antarc* Antarctic Antarctica East Antarctica EPICA |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica EPICA |
op_relation |
1994-0424 http://resolver.sub.uni-goettingen.de/purl?gs-1/13974 doi:10.5194/tc-10-2415-2016 |
op_rights |
openAccess https://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-10-2415-2016 |
container_title |
The Cryosphere |
container_volume |
10 |
container_issue |
5 |
container_start_page |
2415 |
op_container_end_page |
2428 |
_version_ |
1766197757421289472 |