Nitrogen and oxygen isotopic constraints on the origin of atmospheric nitrate in coastal Antarctica
International audience Throughout the year 2001, aerosol samples were collected continuously for 10 to 15 days at the French Antarctic Station Dumont d'Urville (DDU) (66°40' S, l40°0' E, 40 m above mean sea level). The nitrogen and oxygen isotopic ratios of particulate nitrate at DDU...
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HAL CCSD
2007
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Online Access: | https://hal.science/hal-00328498 https://hal.science/hal-00328498/document https://hal.science/hal-00328498/file/acp-7-1925-2007.pdf |
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Université Savoie Mont Blanc: HAL |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Savarino, J. Kaiser, J. Morin, S. Sigman, D. M. Thiemens, M. H. Nitrogen and oxygen isotopic constraints on the origin of atmospheric nitrate in coastal Antarctica |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Throughout the year 2001, aerosol samples were collected continuously for 10 to 15 days at the French Antarctic Station Dumont d'Urville (DDU) (66°40' S, l40°0' E, 40 m above mean sea level). The nitrogen and oxygen isotopic ratios of particulate nitrate at DDU exhibit seasonal variations that are among the most extreme observed for nitrate on Earth. In association with concentration measurements, the isotope ratios delineate four distinct periods, broadly consistent with previous studies on Antarctic coastal areas. During austral autumn and early winter (March to mid-July), nitrate concentrations attain a minimum between 10 and 30 ng m -3 (referred to as Period 2). Two local maxima in August (55 ng m -3 ) and November/December (165 ng m -3 ) are used to assign Period 3 (mid-July to September) and Period 4 (October to December). Period 1 (January to March) is a transition period between the maximum concentration of Period 4 and the background concentration of Period 2. These seasonal changes are reflected in changes of the nitrogen and oxygen isotope ratios. During Period 2, which is characterized by background concentrations, the isotope ratios are in the range of previous measurements at mid-latitudes: d 18 O vsmow =(77.2±8.6)‰; ? 17 O=(29.8±4.4)‰; d 15 N air =(-4.4±5.4)‰ (mean ± one standard deviation). Period 3 is accompanied by a significant increase of the oxygen isotope ratios and a small increase of the nitrogen isotope ratio to d 18 O vsmow =(98.8±13.9)‰; ? 17 O=(38.8±4.7)‰ and d 15 N air =(4.3±8.20‰). Period 4 is characterized by a minimum 15 N/ 14 N ratio, only matched by one prior study of Antarctic aerosols, and oxygen isotope ratios similar to Period 2: d 18 O vsmow =(77.2±7.7)‰; ? 17 O=(31.1±3.2)‰; d 15 N air =(-32.7±8.4)‰. Finally, during Period 1, isotope ratios reach minimum values for oxygen and intermediate values for nitrogen: d 18 O vsmow =63.2±2.5‰; ? 17 O=24.0±1.1‰; d 15 N air =-17.9±4.0‰). Based on the measured isotopic composition, known atmospheric transport ... |
author2 |
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) Department of Geosciences Princeton Princeton University University of California San Diego (UC San Diego) University of California (UC) |
format |
Article in Journal/Newspaper |
author |
Savarino, J. Kaiser, J. Morin, S. Sigman, D. M. Thiemens, M. H. |
author_facet |
Savarino, J. Kaiser, J. Morin, S. Sigman, D. M. Thiemens, M. H. |
author_sort |
Savarino, J. |
title |
Nitrogen and oxygen isotopic constraints on the origin of atmospheric nitrate in coastal Antarctica |
title_short |
Nitrogen and oxygen isotopic constraints on the origin of atmospheric nitrate in coastal Antarctica |
title_full |
Nitrogen and oxygen isotopic constraints on the origin of atmospheric nitrate in coastal Antarctica |
title_fullStr |
Nitrogen and oxygen isotopic constraints on the origin of atmospheric nitrate in coastal Antarctica |
title_full_unstemmed |
Nitrogen and oxygen isotopic constraints on the origin of atmospheric nitrate in coastal Antarctica |
title_sort |
nitrogen and oxygen isotopic constraints on the origin of atmospheric nitrate in coastal antarctica |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00328498 https://hal.science/hal-00328498/document https://hal.science/hal-00328498/file/acp-7-1925-2007.pdf |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00328498 Atmospheric Chemistry and Physics, 2007, 7 (8), pp.1945 |
op_relation |
hal-00328498 https://hal.science/hal-00328498 https://hal.science/hal-00328498/document https://hal.science/hal-00328498/file/acp-7-1925-2007.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1799468564473708544 |
spelling |
ftunivsavoie:oai:HAL:hal-00328498v1 2024-05-19T07:30:54+00:00 Nitrogen and oxygen isotopic constraints on the origin of atmospheric nitrate in coastal Antarctica Savarino, J. Kaiser, J. Morin, S. Sigman, D. M. Thiemens, M. H. 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) Department of Geosciences Princeton Princeton University University of California San Diego (UC San Diego) University of California (UC) 2007-04-18 https://hal.science/hal-00328498 https://hal.science/hal-00328498/document https://hal.science/hal-00328498/file/acp-7-1925-2007.pdf en eng HAL CCSD European Geosciences Union hal-00328498 https://hal.science/hal-00328498 https://hal.science/hal-00328498/document https://hal.science/hal-00328498/file/acp-7-1925-2007.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00328498 Atmospheric Chemistry and Physics, 2007, 7 (8), pp.1945 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2007 ftunivsavoie 2024-04-25T00:13:12Z International audience Throughout the year 2001, aerosol samples were collected continuously for 10 to 15 days at the French Antarctic Station Dumont d'Urville (DDU) (66°40' S, l40°0' E, 40 m above mean sea level). The nitrogen and oxygen isotopic ratios of particulate nitrate at DDU exhibit seasonal variations that are among the most extreme observed for nitrate on Earth. In association with concentration measurements, the isotope ratios delineate four distinct periods, broadly consistent with previous studies on Antarctic coastal areas. During austral autumn and early winter (March to mid-July), nitrate concentrations attain a minimum between 10 and 30 ng m -3 (referred to as Period 2). Two local maxima in August (55 ng m -3 ) and November/December (165 ng m -3 ) are used to assign Period 3 (mid-July to September) and Period 4 (October to December). Period 1 (January to March) is a transition period between the maximum concentration of Period 4 and the background concentration of Period 2. These seasonal changes are reflected in changes of the nitrogen and oxygen isotope ratios. During Period 2, which is characterized by background concentrations, the isotope ratios are in the range of previous measurements at mid-latitudes: d 18 O vsmow =(77.2±8.6)‰; ? 17 O=(29.8±4.4)‰; d 15 N air =(-4.4±5.4)‰ (mean ± one standard deviation). Period 3 is accompanied by a significant increase of the oxygen isotope ratios and a small increase of the nitrogen isotope ratio to d 18 O vsmow =(98.8±13.9)‰; ? 17 O=(38.8±4.7)‰ and d 15 N air =(4.3±8.20‰). Period 4 is characterized by a minimum 15 N/ 14 N ratio, only matched by one prior study of Antarctic aerosols, and oxygen isotope ratios similar to Period 2: d 18 O vsmow =(77.2±7.7)‰; ? 17 O=(31.1±3.2)‰; d 15 N air =(-32.7±8.4)‰. Finally, during Period 1, isotope ratios reach minimum values for oxygen and intermediate values for nitrogen: d 18 O vsmow =63.2±2.5‰; ? 17 O=24.0±1.1‰; d 15 N air =-17.9±4.0‰). Based on the measured isotopic composition, known atmospheric transport ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Université Savoie Mont Blanc: HAL |