The TA192A water stable isotope and chemical firn core records , Adélie Land, Antarctica, supplement to: Goursaud, Sentia; Masson-Delmotte, Valerie; Favier, Vincent; Preunkert, Suzanne; Legrand, Michel; Minster, Bénédicte; Werner, Martin (2019): Challenges associated with the climatic interpretation of water stable isotope records from a highly resolved firn core from Adélie Land, coastal Antarctica. The Cryosphere, 13(4), 1297-1324
A new 21.3m firn core was drilled in 2015 at a coastal Antarctic high accumulation site in Adélie Land (66.78°S; 139.56°E, 602ma.s.l.). The core was dated by annual layers counting based on non-sea-salt sulfate and methanesulfonate summer peaks, refined by a comparison between the reconstructed surf...
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Format: | Dataset |
Language: | English |
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PANGAEA - Data Publisher for Earth & Environmental Science
2018
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Subjects: | |
Online Access: | https://dx.doi.org/10.1594/pangaea.896623 https://doi.pangaea.de/10.1594/PANGAEA.896623 |
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ftdatacite:10.1594/pangaea.896623 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Number DEPTH, ice/snow Age Sodium Original value Methane sulfonic acid Sulfate δ18O Deuterium excess Core |
spellingShingle |
Number DEPTH, ice/snow Age Sodium Original value Methane sulfonic acid Sulfate δ18O Deuterium excess Core Goursaud, Sentia Masson-Delmotte, Valerie Favier, Vincent Preunkert, Suzanne Legrand, Michel R Minster, Bénédicte The TA192A water stable isotope and chemical firn core records , Adélie Land, Antarctica, supplement to: Goursaud, Sentia; Masson-Delmotte, Valerie; Favier, Vincent; Preunkert, Suzanne; Legrand, Michel; Minster, Bénédicte; Werner, Martin (2019): Challenges associated with the climatic interpretation of water stable isotope records from a highly resolved firn core from Adélie Land, coastal Antarctica. The Cryosphere, 13(4), 1297-1324 |
topic_facet |
Number DEPTH, ice/snow Age Sodium Original value Methane sulfonic acid Sulfate δ18O Deuterium excess Core |
description |
A new 21.3m firn core was drilled in 2015 at a coastal Antarctic high accumulation site in Adélie Land (66.78°S; 139.56°E, 602ma.s.l.). The core was dated by annual layers counting based on non-sea-salt sulfate and methanesulfonate summer peaks, refined by a comparison between the reconstructed surface mass balance (hereafter, SMB) and the closest available stake data. The mean reconstructed SMB of 75.2 ± 15.0cmw.e. y−1 is consistent with local stake data, and remarkably high for coastal East Antarctica. The resulting inter-annual and sub-annual variations in isotopic records (δ18O and deuterium excess, hereafter d-excess) are explored for 1998–2014 and are systematically compared with a couple of climatic time series: an updated database of Antarctic surface snow isotopic composition, SMB stake data, meteorological observations from Dumont d'Urville station, sea-ice concentration based on passive microwave satellite data, precipitation outputs of atmospheric reanalyses, climate and water stable isotope outputs from the atmospheric general circulation model ECHAM5-wiso, as well as air mass origins diagnosed using 5-days back-trajectories.The mean isotopic values (−19.3 ± 3.1‰ for δ18O and 5.4 ± 2.2‰ for d-excess) are consistent with other coastal Antarctic values. No significant isotope-temperature relationship can be evidenced at any timescale, ruling out a simple interpretation of in terms of local temperature. An observed asymmetry in the δ18O seasonal cycle may be explained by the precipitation of air masses coming from Indian and Pacific/West Antarctic Ice Sheet sectors in autumn and winter times, recorded in the d-excess signal showing outstanding values in austral spring versus autumn. Significant positive trends are observed in the annual d-excess record and local sea-ice extent (135°E–145°E) over the period 1998–2014.However, processes studies focusing on resulting isotopic compositions and particularly the d-excess-δ18O relationship, evidenced as a potential fingerprint of moisture origins, as well as the collection of more isotopic measurements in Adélie Land are needed for an accurate interpretation of our signals. : The TA192A core is a 21.3 m firn core drilled in 2015 at a coastal Antarctic high accumulation site in Adélie Land (66.78 °S; 139.56 °E, 602 m a.s.l.). Chemical elements, i.e. sulfate and methane sulfonic acid , as well as water stable isotope (δ18O and deutérium excess) were analysed at a 4 cm snow equivalent resolution. Non-sea-salt summer and winter sulfate were computed based on Jourdain et Legrand (2002). Records are given in function of firn core depth (in cm w.e.), and time. |
format |
Dataset |
author |
Goursaud, Sentia Masson-Delmotte, Valerie Favier, Vincent Preunkert, Suzanne Legrand, Michel R Minster, Bénédicte |
author_facet |
Goursaud, Sentia Masson-Delmotte, Valerie Favier, Vincent Preunkert, Suzanne Legrand, Michel R Minster, Bénédicte |
author_sort |
Goursaud, Sentia |
title |
The TA192A water stable isotope and chemical firn core records , Adélie Land, Antarctica, supplement to: Goursaud, Sentia; Masson-Delmotte, Valerie; Favier, Vincent; Preunkert, Suzanne; Legrand, Michel; Minster, Bénédicte; Werner, Martin (2019): Challenges associated with the climatic interpretation of water stable isotope records from a highly resolved firn core from Adélie Land, coastal Antarctica. The Cryosphere, 13(4), 1297-1324 |
title_short |
The TA192A water stable isotope and chemical firn core records , Adélie Land, Antarctica, supplement to: Goursaud, Sentia; Masson-Delmotte, Valerie; Favier, Vincent; Preunkert, Suzanne; Legrand, Michel; Minster, Bénédicte; Werner, Martin (2019): Challenges associated with the climatic interpretation of water stable isotope records from a highly resolved firn core from Adélie Land, coastal Antarctica. The Cryosphere, 13(4), 1297-1324 |
title_full |
The TA192A water stable isotope and chemical firn core records , Adélie Land, Antarctica, supplement to: Goursaud, Sentia; Masson-Delmotte, Valerie; Favier, Vincent; Preunkert, Suzanne; Legrand, Michel; Minster, Bénédicte; Werner, Martin (2019): Challenges associated with the climatic interpretation of water stable isotope records from a highly resolved firn core from Adélie Land, coastal Antarctica. The Cryosphere, 13(4), 1297-1324 |
title_fullStr |
The TA192A water stable isotope and chemical firn core records , Adélie Land, Antarctica, supplement to: Goursaud, Sentia; Masson-Delmotte, Valerie; Favier, Vincent; Preunkert, Suzanne; Legrand, Michel; Minster, Bénédicte; Werner, Martin (2019): Challenges associated with the climatic interpretation of water stable isotope records from a highly resolved firn core from Adélie Land, coastal Antarctica. The Cryosphere, 13(4), 1297-1324 |
title_full_unstemmed |
The TA192A water stable isotope and chemical firn core records , Adélie Land, Antarctica, supplement to: Goursaud, Sentia; Masson-Delmotte, Valerie; Favier, Vincent; Preunkert, Suzanne; Legrand, Michel; Minster, Bénédicte; Werner, Martin (2019): Challenges associated with the climatic interpretation of water stable isotope records from a highly resolved firn core from Adélie Land, coastal Antarctica. The Cryosphere, 13(4), 1297-1324 |
title_sort |
ta192a water stable isotope and chemical firn core records , adélie land, antarctica, supplement to: goursaud, sentia; masson-delmotte, valerie; favier, vincent; preunkert, suzanne; legrand, michel; minster, bénédicte; werner, martin (2019): challenges associated with the climatic interpretation of water stable isotope records from a highly resolved firn core from adélie land, coastal antarctica. the cryosphere, 13(4), 1297-1324 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2018 |
url |
https://dx.doi.org/10.1594/pangaea.896623 https://doi.pangaea.de/10.1594/PANGAEA.896623 |
long_lat |
ENVELOPE(140.017,140.017,-66.667,-66.667) ENVELOPE(140.013,140.013,-66.667,-66.667) ENVELOPE(140.000,140.000,-66.667,-66.667) |
geographic |
Antarctic East Antarctica Austral West Antarctic Ice Sheet Pacific Indian Dumont d'Urville Dumont-d'Urville Dumont d'Urville Station |
geographic_facet |
Antarctic East Antarctica Austral West Antarctic Ice Sheet Pacific Indian Dumont d'Urville Dumont-d'Urville Dumont d'Urville Station |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Sea ice |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Sea ice |
op_relation |
https://dx.doi.org/10.5194/tc-13-1297-2019 https://dx.doi.org/10.1029/2002jd002471 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.896623 https://doi.org/10.5194/tc-13-1297-2019 https://doi.org/10.1029/2002jd002471 |
_version_ |
1766027032149360640 |
spelling |
ftdatacite:10.1594/pangaea.896623 2023-05-15T13:32:26+02:00 The TA192A water stable isotope and chemical firn core records , Adélie Land, Antarctica, supplement to: Goursaud, Sentia; Masson-Delmotte, Valerie; Favier, Vincent; Preunkert, Suzanne; Legrand, Michel; Minster, Bénédicte; Werner, Martin (2019): Challenges associated with the climatic interpretation of water stable isotope records from a highly resolved firn core from Adélie Land, coastal Antarctica. The Cryosphere, 13(4), 1297-1324 Goursaud, Sentia Masson-Delmotte, Valerie Favier, Vincent Preunkert, Suzanne Legrand, Michel R Minster, Bénédicte 2018 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.896623 https://doi.pangaea.de/10.1594/PANGAEA.896623 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.5194/tc-13-1297-2019 https://dx.doi.org/10.1029/2002jd002471 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Number DEPTH, ice/snow Age Sodium Original value Methane sulfonic acid Sulfate δ18O Deuterium excess Core Supplementary Dataset dataset Dataset 2018 ftdatacite https://doi.org/10.1594/pangaea.896623 https://doi.org/10.5194/tc-13-1297-2019 https://doi.org/10.1029/2002jd002471 2022-02-08T17:42:39Z A new 21.3m firn core was drilled in 2015 at a coastal Antarctic high accumulation site in Adélie Land (66.78°S; 139.56°E, 602ma.s.l.). The core was dated by annual layers counting based on non-sea-salt sulfate and methanesulfonate summer peaks, refined by a comparison between the reconstructed surface mass balance (hereafter, SMB) and the closest available stake data. The mean reconstructed SMB of 75.2 ± 15.0cmw.e. y−1 is consistent with local stake data, and remarkably high for coastal East Antarctica. The resulting inter-annual and sub-annual variations in isotopic records (δ18O and deuterium excess, hereafter d-excess) are explored for 1998–2014 and are systematically compared with a couple of climatic time series: an updated database of Antarctic surface snow isotopic composition, SMB stake data, meteorological observations from Dumont d'Urville station, sea-ice concentration based on passive microwave satellite data, precipitation outputs of atmospheric reanalyses, climate and water stable isotope outputs from the atmospheric general circulation model ECHAM5-wiso, as well as air mass origins diagnosed using 5-days back-trajectories.The mean isotopic values (−19.3 ± 3.1‰ for δ18O and 5.4 ± 2.2‰ for d-excess) are consistent with other coastal Antarctic values. No significant isotope-temperature relationship can be evidenced at any timescale, ruling out a simple interpretation of in terms of local temperature. An observed asymmetry in the δ18O seasonal cycle may be explained by the precipitation of air masses coming from Indian and Pacific/West Antarctic Ice Sheet sectors in autumn and winter times, recorded in the d-excess signal showing outstanding values in austral spring versus autumn. Significant positive trends are observed in the annual d-excess record and local sea-ice extent (135°E–145°E) over the period 1998–2014.However, processes studies focusing on resulting isotopic compositions and particularly the d-excess-δ18O relationship, evidenced as a potential fingerprint of moisture origins, as well as the collection of more isotopic measurements in Adélie Land are needed for an accurate interpretation of our signals. : The TA192A core is a 21.3 m firn core drilled in 2015 at a coastal Antarctic high accumulation site in Adélie Land (66.78 °S; 139.56 °E, 602 m a.s.l.). Chemical elements, i.e. sulfate and methane sulfonic acid , as well as water stable isotope (δ18O and deutérium excess) were analysed at a 4 cm snow equivalent resolution. Non-sea-salt summer and winter sulfate were computed based on Jourdain et Legrand (2002). Records are given in function of firn core depth (in cm w.e.), and time. Dataset Antarc* Antarctic Antarctica East Antarctica Ice Sheet Sea ice DataCite Metadata Store (German National Library of Science and Technology) Antarctic East Antarctica Austral West Antarctic Ice Sheet Pacific Indian Dumont d'Urville ENVELOPE(140.017,140.017,-66.667,-66.667) Dumont-d'Urville ENVELOPE(140.013,140.013,-66.667,-66.667) Dumont d'Urville Station ENVELOPE(140.000,140.000,-66.667,-66.667) |