An inverse model to correct for the effects of post-depositional processing on ice-core nitrate and its isotopes: model framework and applications at Summit, Greenland and Dome C, Antarctica
Comprehensive evaluation of the effects of post-depositional processing is a prerequisite for appropriately interpreting ice-core records of nitrate concentration and isotopes. In this study, we developed an inverse model that uses archived snow/ice-core nitrate signals to reconstruct primary nitrat...
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ftcopernicus:oai:publications.copernicus.org:egusphere111611 2024-06-23T07:47:22+00:00 An inverse model to correct for the effects of post-depositional processing on ice-core nitrate and its isotopes: model framework and applications at Summit, Greenland and Dome C, Antarctica Jiang, Zhuang Alexander, Becky Savarino, Joel Geng, Lei 2024-04-25 application/pdf https://doi.org/10.5194/egusphere-2023-1054 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-1054/ eng eng doi:10.5194/egusphere-2023-1054 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-1054/ eISSN: Text 2024 ftcopernicus https://doi.org/10.5194/egusphere-2023-1054 2024-06-13T01:23:50Z Comprehensive evaluation of the effects of post-depositional processing is a prerequisite for appropriately interpreting ice-core records of nitrate concentration and isotopes. In this study, we developed an inverse model that uses archived snow/ice-core nitrate signals to reconstruct primary nitrate flux (i.e., the deposition flux of nitrate to surface snow that originates from long-range transport or stratospheric input) and its isotopes ( δ 15 N and Δ 17 O). The model was then applied to two polar sites, Summit, Greenland, and Dome C, Antarctica, using measured snowpack nitrate concentration and isotope profiles in the top few meters. At Summit, the model successfully reproduced the observed atmospheric δ 15 N(NO 3 - <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="9pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="0723f17b5be9fc41c36a5585631feb47"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="acp-24-4895-2024-ie00001.svg" width="9pt" height="16pt" src="acp-24-4895-2024-ie00001.png"/> </svg:svg> ) and Δ 17 O(NO 3 - <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="9pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="a6a4c5911a740e8377438efb607d4b86"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="acp-24-4895-2024-ie00002.svg" width="9pt" height="16pt" src="acp-24-4895-2024-ie00002.png"/> </svg:svg> ) and their seasonality. The model was also able to reasonably reproduce the observed snowpack nitrate profiles at Dome C as well as the skin layer and atmospheric δ 15 N(NO 3 - <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="9pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="7de8959157e6c258409d4c11688ca166"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="acp-24-4895-2024-ie00003.svg" width="9pt" height="16pt" src="acp-24-4895-2024-ie00003.png"/> </svg:svg> ) and Δ 17 O(NO 3 - <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="9pt" ... Text Antarc* Antarctica Greenland ice core Copernicus Publications: E-Journals Greenland |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
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English |
description |
Comprehensive evaluation of the effects of post-depositional processing is a prerequisite for appropriately interpreting ice-core records of nitrate concentration and isotopes. In this study, we developed an inverse model that uses archived snow/ice-core nitrate signals to reconstruct primary nitrate flux (i.e., the deposition flux of nitrate to surface snow that originates from long-range transport or stratospheric input) and its isotopes ( δ 15 N and Δ 17 O). The model was then applied to two polar sites, Summit, Greenland, and Dome C, Antarctica, using measured snowpack nitrate concentration and isotope profiles in the top few meters. At Summit, the model successfully reproduced the observed atmospheric δ 15 N(NO 3 - <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="9pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="0723f17b5be9fc41c36a5585631feb47"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="acp-24-4895-2024-ie00001.svg" width="9pt" height="16pt" src="acp-24-4895-2024-ie00001.png"/> </svg:svg> ) and Δ 17 O(NO 3 - <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="9pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="a6a4c5911a740e8377438efb607d4b86"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="acp-24-4895-2024-ie00002.svg" width="9pt" height="16pt" src="acp-24-4895-2024-ie00002.png"/> </svg:svg> ) and their seasonality. The model was also able to reasonably reproduce the observed snowpack nitrate profiles at Dome C as well as the skin layer and atmospheric δ 15 N(NO 3 - <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="9pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="7de8959157e6c258409d4c11688ca166"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="acp-24-4895-2024-ie00003.svg" width="9pt" height="16pt" src="acp-24-4895-2024-ie00003.png"/> </svg:svg> ) and Δ 17 O(NO 3 - <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="9pt" ... |
format |
Text |
author |
Jiang, Zhuang Alexander, Becky Savarino, Joel Geng, Lei |
spellingShingle |
Jiang, Zhuang Alexander, Becky Savarino, Joel Geng, Lei An inverse model to correct for the effects of post-depositional processing on ice-core nitrate and its isotopes: model framework and applications at Summit, Greenland and Dome C, Antarctica |
author_facet |
Jiang, Zhuang Alexander, Becky Savarino, Joel Geng, Lei |
author_sort |
Jiang, Zhuang |
title |
An inverse model to correct for the effects of post-depositional processing on ice-core nitrate and its isotopes: model framework and applications at Summit, Greenland and Dome C, Antarctica |
title_short |
An inverse model to correct for the effects of post-depositional processing on ice-core nitrate and its isotopes: model framework and applications at Summit, Greenland and Dome C, Antarctica |
title_full |
An inverse model to correct for the effects of post-depositional processing on ice-core nitrate and its isotopes: model framework and applications at Summit, Greenland and Dome C, Antarctica |
title_fullStr |
An inverse model to correct for the effects of post-depositional processing on ice-core nitrate and its isotopes: model framework and applications at Summit, Greenland and Dome C, Antarctica |
title_full_unstemmed |
An inverse model to correct for the effects of post-depositional processing on ice-core nitrate and its isotopes: model framework and applications at Summit, Greenland and Dome C, Antarctica |
title_sort |
inverse model to correct for the effects of post-depositional processing on ice-core nitrate and its isotopes: model framework and applications at summit, greenland and dome c, antarctica |
publishDate |
2024 |
url |
https://doi.org/10.5194/egusphere-2023-1054 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-1054/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Antarc* Antarctica Greenland ice core |
genre_facet |
Antarc* Antarctica Greenland ice core |
op_source |
eISSN: |
op_relation |
doi:10.5194/egusphere-2023-1054 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-1054/ |
op_doi |
https://doi.org/10.5194/egusphere-2023-1054 |
_version_ |
1802651457437040640 |