1000 years of Nitrogen Oxide Sources in Western Europe: Evidence from Nitrogen Stable Isotopes (δ15N) of Nitrate in a Mont Blanc Ice Core
Nitrogen stable isotopes (δ15N) of ice core nitrate of nitrate (NO3-) are often subject to various interpretations, associated with source, atmospheric, and/or post-depositional changes. Here, an analysis of a Mont-Blanc (French Alps) ice core was conducted to investigate δ15N(NO3-) records over the...
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Authorea, Inc.
2024
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Online Access: | http://dx.doi.org/10.22541/essoar.171781204.49551149/v1 |
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crwinnower:10.22541/essoar.171781204.49551149/v1 2024-06-23T07:53:42+00:00 1000 years of Nitrogen Oxide Sources in Western Europe: Evidence from Nitrogen Stable Isotopes (δ15N) of Nitrate in a Mont Blanc Ice Core Lamothe, Alexis Akers, Pete Douglas Albertin, Sarah Caillon, Nicolas Darfeuil, Sophie Gautier, Elsa Ginot, Patrick Hattori, Shohei Savarino, Joel 2024 http://dx.doi.org/10.22541/essoar.171781204.49551149/v1 unknown Authorea, Inc. posted-content 2024 crwinnower https://doi.org/10.22541/essoar.171781204.49551149/v1 2024-06-11T04:52:33Z Nitrogen stable isotopes (δ15N) of ice core nitrate of nitrate (NO3-) are often subject to various interpretations, associated with source, atmospheric, and/or post-depositional changes. Here, an analysis of a Mont-Blanc (French Alps) ice core was conducted to investigate δ15N(NO3-) records over the last 1000 years. We find that the glacially archived δ15N(NO3-) signal reliably preserves a record of NOx emission sources with limited post-emission isotopic changes. We use the δ15N record to reconstruct a history of NOx emissions and compare it with existing estimated NOx inventories for Western Europe. Notably, our ice-derived record suggests that inventories for the early 20th-century may have underestimated NOx emissions resulting from agriculture. During the 20th century, the δ15N value substantially decreased, which we attribute to the increasing emissions from oil combustion. Lastly, the ice core signal highlights the success of mitigation policies in reducing fossil fuel-induced NOx emissions, albeit 20 years later than anticipated. Other/Unknown Material ice core The Winnower Mont Blanc ENVELOPE(69.468,69.468,-49.461,-49.461) |
institution |
Open Polar |
collection |
The Winnower |
op_collection_id |
crwinnower |
language |
unknown |
description |
Nitrogen stable isotopes (δ15N) of ice core nitrate of nitrate (NO3-) are often subject to various interpretations, associated with source, atmospheric, and/or post-depositional changes. Here, an analysis of a Mont-Blanc (French Alps) ice core was conducted to investigate δ15N(NO3-) records over the last 1000 years. We find that the glacially archived δ15N(NO3-) signal reliably preserves a record of NOx emission sources with limited post-emission isotopic changes. We use the δ15N record to reconstruct a history of NOx emissions and compare it with existing estimated NOx inventories for Western Europe. Notably, our ice-derived record suggests that inventories for the early 20th-century may have underestimated NOx emissions resulting from agriculture. During the 20th century, the δ15N value substantially decreased, which we attribute to the increasing emissions from oil combustion. Lastly, the ice core signal highlights the success of mitigation policies in reducing fossil fuel-induced NOx emissions, albeit 20 years later than anticipated. |
format |
Other/Unknown Material |
author |
Lamothe, Alexis Akers, Pete Douglas Albertin, Sarah Caillon, Nicolas Darfeuil, Sophie Gautier, Elsa Ginot, Patrick Hattori, Shohei Savarino, Joel |
spellingShingle |
Lamothe, Alexis Akers, Pete Douglas Albertin, Sarah Caillon, Nicolas Darfeuil, Sophie Gautier, Elsa Ginot, Patrick Hattori, Shohei Savarino, Joel 1000 years of Nitrogen Oxide Sources in Western Europe: Evidence from Nitrogen Stable Isotopes (δ15N) of Nitrate in a Mont Blanc Ice Core |
author_facet |
Lamothe, Alexis Akers, Pete Douglas Albertin, Sarah Caillon, Nicolas Darfeuil, Sophie Gautier, Elsa Ginot, Patrick Hattori, Shohei Savarino, Joel |
author_sort |
Lamothe, Alexis |
title |
1000 years of Nitrogen Oxide Sources in Western Europe: Evidence from Nitrogen Stable Isotopes (δ15N) of Nitrate in a Mont Blanc Ice Core |
title_short |
1000 years of Nitrogen Oxide Sources in Western Europe: Evidence from Nitrogen Stable Isotopes (δ15N) of Nitrate in a Mont Blanc Ice Core |
title_full |
1000 years of Nitrogen Oxide Sources in Western Europe: Evidence from Nitrogen Stable Isotopes (δ15N) of Nitrate in a Mont Blanc Ice Core |
title_fullStr |
1000 years of Nitrogen Oxide Sources in Western Europe: Evidence from Nitrogen Stable Isotopes (δ15N) of Nitrate in a Mont Blanc Ice Core |
title_full_unstemmed |
1000 years of Nitrogen Oxide Sources in Western Europe: Evidence from Nitrogen Stable Isotopes (δ15N) of Nitrate in a Mont Blanc Ice Core |
title_sort |
1000 years of nitrogen oxide sources in western europe: evidence from nitrogen stable isotopes (δ15n) of nitrate in a mont blanc ice core |
publisher |
Authorea, Inc. |
publishDate |
2024 |
url |
http://dx.doi.org/10.22541/essoar.171781204.49551149/v1 |
long_lat |
ENVELOPE(69.468,69.468,-49.461,-49.461) |
geographic |
Mont Blanc |
geographic_facet |
Mont Blanc |
genre |
ice core |
genre_facet |
ice core |
op_doi |
https://doi.org/10.22541/essoar.171781204.49551149/v1 |
_version_ |
1802645485936181248 |