Modeling the Complete Nitrogen and Oxygen Isotopic Imprint of Nitrate Photolysis in Snow
Abstract Snow nitrate is vulnerable to photolytic loss that causes isotopic alteration, and thus its isotopes can potentially track the extent of snow nitrate photolysis and its impacts in environments where loss is significant. Large increases in δ15N‐NO3− below the snow surface have been attribute...
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Online Access: | https://doi.org/10.1029/2023GL103778 https://doaj.org/article/df76edb8fba145328a70f67543d234da |
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ftdoajarticles:oai:doaj.org/article:df76edb8fba145328a70f67543d234da 2024-09-15T17:48:15+00:00 Modeling the Complete Nitrogen and Oxygen Isotopic Imprint of Nitrate Photolysis in Snow Guitao Shi Aron M. Buffen Ye Hu Jiajue Chai Yilan Li Danghe Wang Meredith G. Hastings 2023-06-01T00:00:00Z https://doi.org/10.1029/2023GL103778 https://doaj.org/article/df76edb8fba145328a70f67543d234da EN eng Wiley https://doi.org/10.1029/2023GL103778 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2023GL103778 https://doaj.org/article/df76edb8fba145328a70f67543d234da Geophysical Research Letters, Vol 50, Iss 12, Pp n/a-n/a (2023) snow nitrate photolysis isotopic fractionation Dome A East Antarctica model simulation Geophysics. Cosmic physics QC801-809 article 2023 ftdoajarticles https://doi.org/10.1029/2023GL103778 2024-08-05T17:49:23Z Abstract Snow nitrate is vulnerable to photolytic loss that causes isotopic alteration, and thus its isotopes can potentially track the extent of snow nitrate photolysis and its impacts in environments where loss is significant. Large increases in δ15N‐NO3− below the snow surface have been attributed to photolysis and this behavior is generally consistent amongst theoretical as well as lab and field studies. Oxygen isotope ratios are thought to be influenced by photolysis as well as secondary condensed‐phase chemistry, but the competing effects have yet to be reconciled. Here we use a model that simulates nitrate burial, photolytic fractionation, and re‐oxidation in snow to quantitatively assess these processes with the aim of developing a consistent framework for interpreting the photolytic effects of the complete nitrate isotopic composition (δ15N, δ18O, and Δ17O). This study reveals that isotopic effects of nitrate photolysis and aqueous‐phase re‐oxidation chemistry are important sources of uncertainties in modeling δ18O‐NO3−. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Directory of Open Access Journals: DOAJ Articles Geophysical Research Letters 50 12 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
snow nitrate photolysis isotopic fractionation Dome A East Antarctica model simulation Geophysics. Cosmic physics QC801-809 |
spellingShingle |
snow nitrate photolysis isotopic fractionation Dome A East Antarctica model simulation Geophysics. Cosmic physics QC801-809 Guitao Shi Aron M. Buffen Ye Hu Jiajue Chai Yilan Li Danghe Wang Meredith G. Hastings Modeling the Complete Nitrogen and Oxygen Isotopic Imprint of Nitrate Photolysis in Snow |
topic_facet |
snow nitrate photolysis isotopic fractionation Dome A East Antarctica model simulation Geophysics. Cosmic physics QC801-809 |
description |
Abstract Snow nitrate is vulnerable to photolytic loss that causes isotopic alteration, and thus its isotopes can potentially track the extent of snow nitrate photolysis and its impacts in environments where loss is significant. Large increases in δ15N‐NO3− below the snow surface have been attributed to photolysis and this behavior is generally consistent amongst theoretical as well as lab and field studies. Oxygen isotope ratios are thought to be influenced by photolysis as well as secondary condensed‐phase chemistry, but the competing effects have yet to be reconciled. Here we use a model that simulates nitrate burial, photolytic fractionation, and re‐oxidation in snow to quantitatively assess these processes with the aim of developing a consistent framework for interpreting the photolytic effects of the complete nitrate isotopic composition (δ15N, δ18O, and Δ17O). This study reveals that isotopic effects of nitrate photolysis and aqueous‐phase re‐oxidation chemistry are important sources of uncertainties in modeling δ18O‐NO3−. |
format |
Article in Journal/Newspaper |
author |
Guitao Shi Aron M. Buffen Ye Hu Jiajue Chai Yilan Li Danghe Wang Meredith G. Hastings |
author_facet |
Guitao Shi Aron M. Buffen Ye Hu Jiajue Chai Yilan Li Danghe Wang Meredith G. Hastings |
author_sort |
Guitao Shi |
title |
Modeling the Complete Nitrogen and Oxygen Isotopic Imprint of Nitrate Photolysis in Snow |
title_short |
Modeling the Complete Nitrogen and Oxygen Isotopic Imprint of Nitrate Photolysis in Snow |
title_full |
Modeling the Complete Nitrogen and Oxygen Isotopic Imprint of Nitrate Photolysis in Snow |
title_fullStr |
Modeling the Complete Nitrogen and Oxygen Isotopic Imprint of Nitrate Photolysis in Snow |
title_full_unstemmed |
Modeling the Complete Nitrogen and Oxygen Isotopic Imprint of Nitrate Photolysis in Snow |
title_sort |
modeling the complete nitrogen and oxygen isotopic imprint of nitrate photolysis in snow |
publisher |
Wiley |
publishDate |
2023 |
url |
https://doi.org/10.1029/2023GL103778 https://doaj.org/article/df76edb8fba145328a70f67543d234da |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_source |
Geophysical Research Letters, Vol 50, Iss 12, Pp n/a-n/a (2023) |
op_relation |
https://doi.org/10.1029/2023GL103778 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2023GL103778 https://doaj.org/article/df76edb8fba145328a70f67543d234da |
op_doi |
https://doi.org/10.1029/2023GL103778 |
container_title |
Geophysical Research Letters |
container_volume |
50 |
container_issue |
12 |
_version_ |
1810289409464991744 |