Past and recent tritium levels in Arctic and Antarctic polar caps
International audience Tritium concentration was measured in snow deposited at the GRIP site (central Greenland) and at the Vostok station (east Antarctica) from snow pits covering the period 1980–1990. The objective of the study was to investigate tritium concentrations in polar regions several dec...
Published in: | Earth and Planetary Science Letters |
---|---|
Main Authors: | , , , , , |
Other Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2006
|
Subjects: | |
Online Access: | https://insu.hal.science/insu-00375468 https://doi.org/10.1016/j.epsl.2006.03.003 |
id |
ftuniversailles:oai:HAL:insu-00375468v1 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
tritium ice core Antarctica Greenland [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
tritium ice core Antarctica Greenland [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Fourré, Elise Jean-Baptiste, Philippe Dapoigny, Arnaud Baumier, Dominique Petit, Jean-Robert Jouzel, Jean Past and recent tritium levels in Arctic and Antarctic polar caps |
topic_facet |
tritium ice core Antarctica Greenland [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience Tritium concentration was measured in snow deposited at the GRIP site (central Greenland) and at the Vostok station (east Antarctica) from snow pits covering the period 1980–1990. The objective of the study was to investigate tritium concentrations in polar regions several decades after the bomb peak of the sixties and to put them in the context of available data for environmental tritium in the Arctic and the Antarctic over the last five decades. The tritium content of the samples was measured by mass spectrometry using the helium-3 regrowth method. In Antarctica, the tritium concentrations are in the range 70–110 TU. The comparison of the bomb tritium history at different locations show that tritium levels increase moving inland, where vapour pressure becomes extremely low and therefore more sensitive to the intrusion of stratospheric air masses highly enriched in tritium. Although most tritium fallout occurred in the Northern hemisphere, the tritium levels in central Greenland in the 80's, in the range 10–40 TU, are significantly lower than at Vostok. Unlike Antarctica, no such continental effect is observed in Greenland, due to the higher water vapour content of the air masses, as evidenced by the much higher snow accumulation rate. Whereas tritium fallout in Antarctica appears to occur as a result of direct injections of stratospheric tritium during winter, Arctic fallout are the result of the dominant spring injection of stratospheric air at mid-latitude, in line with the deposition of other stratospheric tracers. |
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)) Géochrononologie Traceurs Archéométrie (GEOTRAC) Chimie Atmosphérique Expérimentale (CAE) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Fourré, Elise Jean-Baptiste, Philippe Dapoigny, Arnaud Baumier, Dominique Petit, Jean-Robert Jouzel, Jean |
author_facet |
Fourré, Elise Jean-Baptiste, Philippe Dapoigny, Arnaud Baumier, Dominique Petit, Jean-Robert Jouzel, Jean |
author_sort |
Fourré, Elise |
title |
Past and recent tritium levels in Arctic and Antarctic polar caps |
title_short |
Past and recent tritium levels in Arctic and Antarctic polar caps |
title_full |
Past and recent tritium levels in Arctic and Antarctic polar caps |
title_fullStr |
Past and recent tritium levels in Arctic and Antarctic polar caps |
title_full_unstemmed |
Past and recent tritium levels in Arctic and Antarctic polar caps |
title_sort |
past and recent tritium levels in arctic and antarctic polar caps |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://insu.hal.science/insu-00375468 https://doi.org/10.1016/j.epsl.2006.03.003 |
genre |
Antarc* Antarctic Antarctica Arctic East Antarctica Greenland GRIP ice core |
genre_facet |
Antarc* Antarctic Antarctica Arctic East Antarctica Greenland GRIP ice core |
op_source |
ISSN: 0012-821X Earth and Planetary Science Letters https://insu.hal.science/insu-00375468 Earth and Planetary Science Letters, 2006, 245 (1-2), pp.56 à 64. ⟨10.1016/j.epsl.2006.03.003⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2006.03.003 insu-00375468 https://insu.hal.science/insu-00375468 doi:10.1016/j.epsl.2006.03.003 |
op_doi |
https://doi.org/10.1016/j.epsl.2006.03.003 |
container_title |
Earth and Planetary Science Letters |
container_volume |
245 |
container_issue |
1-2 |
container_start_page |
56 |
op_container_end_page |
64 |
_version_ |
1797584476650340352 |
spelling |
ftuniversailles:oai:HAL:insu-00375468v1 2024-04-28T07:56:42+00:00 Past and recent tritium levels in Arctic and Antarctic polar caps Fourré, Elise Jean-Baptiste, Philippe Dapoigny, Arnaud Baumier, Dominique Petit, Jean-Robert Jouzel, Jean 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)) Géochrononologie Traceurs Archéométrie (GEOTRAC) Chimie Atmosphérique Expérimentale (CAE) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) 2006 https://insu.hal.science/insu-00375468 https://doi.org/10.1016/j.epsl.2006.03.003 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2006.03.003 insu-00375468 https://insu.hal.science/insu-00375468 doi:10.1016/j.epsl.2006.03.003 ISSN: 0012-821X Earth and Planetary Science Letters https://insu.hal.science/insu-00375468 Earth and Planetary Science Letters, 2006, 245 (1-2), pp.56 à 64. ⟨10.1016/j.epsl.2006.03.003⟩ tritium ice core Antarctica Greenland [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2006 ftuniversailles https://doi.org/10.1016/j.epsl.2006.03.003 2024-04-11T00:02:10Z International audience Tritium concentration was measured in snow deposited at the GRIP site (central Greenland) and at the Vostok station (east Antarctica) from snow pits covering the period 1980–1990. The objective of the study was to investigate tritium concentrations in polar regions several decades after the bomb peak of the sixties and to put them in the context of available data for environmental tritium in the Arctic and the Antarctic over the last five decades. The tritium content of the samples was measured by mass spectrometry using the helium-3 regrowth method. In Antarctica, the tritium concentrations are in the range 70–110 TU. The comparison of the bomb tritium history at different locations show that tritium levels increase moving inland, where vapour pressure becomes extremely low and therefore more sensitive to the intrusion of stratospheric air masses highly enriched in tritium. Although most tritium fallout occurred in the Northern hemisphere, the tritium levels in central Greenland in the 80's, in the range 10–40 TU, are significantly lower than at Vostok. Unlike Antarctica, no such continental effect is observed in Greenland, due to the higher water vapour content of the air masses, as evidenced by the much higher snow accumulation rate. Whereas tritium fallout in Antarctica appears to occur as a result of direct injections of stratospheric tritium during winter, Arctic fallout are the result of the dominant spring injection of stratospheric air at mid-latitude, in line with the deposition of other stratospheric tracers. Article in Journal/Newspaper Antarc* Antarctic Antarctica Arctic East Antarctica Greenland GRIP ice core Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Earth and Planetary Science Letters 245 1-2 56 64 |