Tritium Records to Trace Stratospheric Moisture Inputs in Antarctica
International audience Better assessing the dynamic of stratosphere‐troposphere exchange is a key point to improve our understanding of the climate dynamic in the East Antarctica Plateau, a region where stratospheric inputs are expected to be important. Although tritium (3H or T), a nuclide naturall...
Published in: | Journal of Geophysical Research: Atmospheres |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2018
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Subjects: | |
Online Access: | https://hal.science/hal-01806747 https://hal.science/hal-01806747/document https://hal.science/hal-01806747/file/2018JD028304.pdf https://doi.org/10.1002/2018JD028304 |
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Open Polar |
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École Polytechnique, Université Paris-Saclay: HAL |
op_collection_id |
ftepunivpsaclay |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Fourré, E. Landais, A. Cauquoin, A. Jean-Baptiste, P. Lipenkov, V. Petit, J.-R. Tritium Records to Trace Stratospheric Moisture Inputs in Antarctica |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Better assessing the dynamic of stratosphere‐troposphere exchange is a key point to improve our understanding of the climate dynamic in the East Antarctica Plateau, a region where stratospheric inputs are expected to be important. Although tritium (3H or T), a nuclide naturally produced mainly in the stratosphere and rapidly entering the water cycle as HTO, seems a first‐rate tracer to study these processes, tritium data are very sparse in this region. We present the first high‐resolution measurements of tritium concentration over the last 50 years in three snow pits drilled at the Vostok station. Natural variability of the tritium records reveals two prominent frequencies, one at about 10 years (to be related to the solar Schwabe cycles) and the other one at a shorter periodicity: despite dating uncertainty at this short scale, a good correlation is observed between 3H and Na+ and an anticorrelation between 3H and δ18O measured on an individual pit. The outputs from the LMDZ Atmospheric General Circulation Model including stable water isotopes and tritium show the same 3H‐δ18O anticorrelation and allow further investigation on the associated mechanism. At the interannual scale, the modeled 3H variability matches well with the Southern Annular Mode index. At the seasonal scale, we show that modeled stratospheric tritium inputs in the troposphere are favored in winter cold and dry conditions. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) Arctic and Antarctic Research Institute (AARI) Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) |
format |
Article in Journal/Newspaper |
author |
Fourré, E. Landais, A. Cauquoin, A. Jean-Baptiste, P. Lipenkov, V. Petit, J.-R. |
author_facet |
Fourré, E. Landais, A. Cauquoin, A. Jean-Baptiste, P. Lipenkov, V. Petit, J.-R. |
author_sort |
Fourré, E. |
title |
Tritium Records to Trace Stratospheric Moisture Inputs in Antarctica |
title_short |
Tritium Records to Trace Stratospheric Moisture Inputs in Antarctica |
title_full |
Tritium Records to Trace Stratospheric Moisture Inputs in Antarctica |
title_fullStr |
Tritium Records to Trace Stratospheric Moisture Inputs in Antarctica |
title_full_unstemmed |
Tritium Records to Trace Stratospheric Moisture Inputs in Antarctica |
title_sort |
tritium records to trace stratospheric moisture inputs in antarctica |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.science/hal-01806747 https://hal.science/hal-01806747/document https://hal.science/hal-01806747/file/2018JD028304.pdf https://doi.org/10.1002/2018JD028304 |
long_lat |
ENVELOPE(106.837,106.837,-78.464,-78.464) |
geographic |
East Antarctica Vostok Station |
geographic_facet |
East Antarctica Vostok Station |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_source |
ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.science/hal-01806747 Journal of Geophysical Research: Atmospheres, 2018, 123 (6), pp.3009 - 3018. ⟨10.1002/2018JD028304⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2018JD028304 hal-01806747 https://hal.science/hal-01806747 https://hal.science/hal-01806747/document https://hal.science/hal-01806747/file/2018JD028304.pdf doi:10.1002/2018JD028304 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/2018JD028304 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
123 |
container_issue |
6 |
container_start_page |
3009 |
op_container_end_page |
3018 |
_version_ |
1801379407706718208 |
spelling |
ftepunivpsaclay:oai:HAL:hal-01806747v1 2024-06-09T07:39:26+00:00 Tritium Records to Trace Stratospheric Moisture Inputs in Antarctica Fourré, E. Landais, A. Cauquoin, A. Jean-Baptiste, P. Lipenkov, V. Petit, J.-R. Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) Arctic and Antarctic Research Institute (AARI) Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) 2018 https://hal.science/hal-01806747 https://hal.science/hal-01806747/document https://hal.science/hal-01806747/file/2018JD028304.pdf https://doi.org/10.1002/2018JD028304 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1002/2018JD028304 hal-01806747 https://hal.science/hal-01806747 https://hal.science/hal-01806747/document https://hal.science/hal-01806747/file/2018JD028304.pdf doi:10.1002/2018JD028304 info:eu-repo/semantics/OpenAccess ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.science/hal-01806747 Journal of Geophysical Research: Atmospheres, 2018, 123 (6), pp.3009 - 3018. ⟨10.1002/2018JD028304⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2018 ftepunivpsaclay https://doi.org/10.1002/2018JD028304 2024-05-16T12:10:49Z International audience Better assessing the dynamic of stratosphere‐troposphere exchange is a key point to improve our understanding of the climate dynamic in the East Antarctica Plateau, a region where stratospheric inputs are expected to be important. Although tritium (3H or T), a nuclide naturally produced mainly in the stratosphere and rapidly entering the water cycle as HTO, seems a first‐rate tracer to study these processes, tritium data are very sparse in this region. We present the first high‐resolution measurements of tritium concentration over the last 50 years in three snow pits drilled at the Vostok station. Natural variability of the tritium records reveals two prominent frequencies, one at about 10 years (to be related to the solar Schwabe cycles) and the other one at a shorter periodicity: despite dating uncertainty at this short scale, a good correlation is observed between 3H and Na+ and an anticorrelation between 3H and δ18O measured on an individual pit. The outputs from the LMDZ Atmospheric General Circulation Model including stable water isotopes and tritium show the same 3H‐δ18O anticorrelation and allow further investigation on the associated mechanism. At the interannual scale, the modeled 3H variability matches well with the Southern Annular Mode index. At the seasonal scale, we show that modeled stratospheric tritium inputs in the troposphere are favored in winter cold and dry conditions. Article in Journal/Newspaper Antarc* Antarctica East Antarctica École Polytechnique, Université Paris-Saclay: HAL East Antarctica Vostok Station ENVELOPE(106.837,106.837,-78.464,-78.464) Journal of Geophysical Research: Atmospheres 123 6 3009 3018 |