N2O changes from the Last Glacial Maximum to the preindustrial – Part 1: Quantitative reconstruction of terrestrial and marine emissions using N2O stable isotopes in ice cores

Using high-precision and centennial-resolution ice core information on atmospheric nitrous oxide concentrations and its stable nitrogen and oxygen isotopic composition, we quantitatively reconstruct changes in the terrestrial and marine N2O emissions over the last 21 000 years. Our reconstruction in...

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Published in:Biogeosciences
Main Authors: Fischer, Hubertus, Schmitt, Jochen, Bock, Michael, Seth, Barbara, Joos, Fortunat, Spahni, Renato, Lienert, Sebastian, Battaglia, Gianna, Stocker, Benjamin D., Schilt, Adrian, Brook, Edward J.
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2019
Subjects:
Online Access:https://doi.org/10.5194/bg-16-3997-2019
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spelling ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00041086 2023-05-15T16:39:25+02:00 N2O changes from the Last Glacial Maximum to the preindustrial – Part 1: Quantitative reconstruction of terrestrial and marine emissions using N2O stable isotopes in ice cores Fischer, Hubertus Schmitt, Jochen Bock, Michael Seth, Barbara Joos, Fortunat Spahni, Renato Lienert, Sebastian Battaglia, Gianna Stocker, Benjamin D. Schilt, Adrian Brook, Edward J. 2019-10 electronic https://doi.org/10.5194/bg-16-3997-2019 https://noa.gwlb.de/receive/cop_mods_00041086 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00040708/bg-16-3997-2019.pdf https://bg.copernicus.org/articles/16/3997/2019/bg-16-3997-2019.pdf eng eng Copernicus Publications Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-16-3997-2019 https://noa.gwlb.de/receive/cop_mods_00041086 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00040708/bg-16-3997-2019.pdf https://bg.copernicus.org/articles/16/3997/2019/bg-16-3997-2019.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2019 ftnonlinearchiv https://doi.org/10.5194/bg-16-3997-2019 2022-02-08T22:41:50Z Using high-precision and centennial-resolution ice core information on atmospheric nitrous oxide concentrations and its stable nitrogen and oxygen isotopic composition, we quantitatively reconstruct changes in the terrestrial and marine N2O emissions over the last 21 000 years. Our reconstruction indicates that N2O emissions from land and ocean increased over the deglaciation largely in parallel by 1.7±0.3 and 0.7±0.3 TgN yr−1, respectively, relative to the Last Glacial Maximum level. However, during the abrupt Northern Hemisphere warmings at the onset of the Bølling–Allerød warming and the end of the Younger Dryas, terrestrial emissions respond more rapidly to the northward shift in the Intertropical Convergence Zone connected to the resumption of the Atlantic Meridional Overturning Circulation. About 90 % of these large step increases were realized within 2 centuries at maximum. In contrast, marine emissions start to slowly increase already many centuries before the rapid warmings, possibly connected to a re-equilibration of subsurface oxygen in response to previous changes. Marine emissions decreased, concomitantly with changes in atmospheric CO2 and δ13C(CO2), at the onset of the termination and remained minimal during the early phase of Heinrich Stadial 1. During the early Holocene a slow decline in marine N2O emission of 0.4 TgN yr−1 is reconstructed, which suggests an improvement of subsurface water ventilation in line with slowly increasing Atlantic overturning circulation. In the second half of the Holocene total emissions remain on a relatively constant level, but with significant millennial variability. The latter is still difficult to attribute to marine or terrestrial sources. Our N2O emission records provide important quantitative benchmarks for ocean and terrestrial nitrogen cycle models to study the influence of climate on nitrogen turnover on timescales from several decades to glacial–interglacial changes. Article in Journal/Newspaper ice core Niedersächsisches Online-Archiv NOA Biogeosciences 16 20 3997 4021
institution Open Polar
collection Niedersächsisches Online-Archiv NOA
op_collection_id ftnonlinearchiv
language English
topic article
Verlagsveröffentlichung
spellingShingle article
Verlagsveröffentlichung
Fischer, Hubertus
Schmitt, Jochen
Bock, Michael
Seth, Barbara
Joos, Fortunat
Spahni, Renato
Lienert, Sebastian
Battaglia, Gianna
Stocker, Benjamin D.
Schilt, Adrian
Brook, Edward J.
N2O changes from the Last Glacial Maximum to the preindustrial – Part 1: Quantitative reconstruction of terrestrial and marine emissions using N2O stable isotopes in ice cores
topic_facet article
Verlagsveröffentlichung
description Using high-precision and centennial-resolution ice core information on atmospheric nitrous oxide concentrations and its stable nitrogen and oxygen isotopic composition, we quantitatively reconstruct changes in the terrestrial and marine N2O emissions over the last 21 000 years. Our reconstruction indicates that N2O emissions from land and ocean increased over the deglaciation largely in parallel by 1.7±0.3 and 0.7±0.3 TgN yr−1, respectively, relative to the Last Glacial Maximum level. However, during the abrupt Northern Hemisphere warmings at the onset of the Bølling–Allerød warming and the end of the Younger Dryas, terrestrial emissions respond more rapidly to the northward shift in the Intertropical Convergence Zone connected to the resumption of the Atlantic Meridional Overturning Circulation. About 90 % of these large step increases were realized within 2 centuries at maximum. In contrast, marine emissions start to slowly increase already many centuries before the rapid warmings, possibly connected to a re-equilibration of subsurface oxygen in response to previous changes. Marine emissions decreased, concomitantly with changes in atmospheric CO2 and δ13C(CO2), at the onset of the termination and remained minimal during the early phase of Heinrich Stadial 1. During the early Holocene a slow decline in marine N2O emission of 0.4 TgN yr−1 is reconstructed, which suggests an improvement of subsurface water ventilation in line with slowly increasing Atlantic overturning circulation. In the second half of the Holocene total emissions remain on a relatively constant level, but with significant millennial variability. The latter is still difficult to attribute to marine or terrestrial sources. Our N2O emission records provide important quantitative benchmarks for ocean and terrestrial nitrogen cycle models to study the influence of climate on nitrogen turnover on timescales from several decades to glacial–interglacial changes.
format Article in Journal/Newspaper
author Fischer, Hubertus
Schmitt, Jochen
Bock, Michael
Seth, Barbara
Joos, Fortunat
Spahni, Renato
Lienert, Sebastian
Battaglia, Gianna
Stocker, Benjamin D.
Schilt, Adrian
Brook, Edward J.
author_facet Fischer, Hubertus
Schmitt, Jochen
Bock, Michael
Seth, Barbara
Joos, Fortunat
Spahni, Renato
Lienert, Sebastian
Battaglia, Gianna
Stocker, Benjamin D.
Schilt, Adrian
Brook, Edward J.
author_sort Fischer, Hubertus
title N2O changes from the Last Glacial Maximum to the preindustrial – Part 1: Quantitative reconstruction of terrestrial and marine emissions using N2O stable isotopes in ice cores
title_short N2O changes from the Last Glacial Maximum to the preindustrial – Part 1: Quantitative reconstruction of terrestrial and marine emissions using N2O stable isotopes in ice cores
title_full N2O changes from the Last Glacial Maximum to the preindustrial – Part 1: Quantitative reconstruction of terrestrial and marine emissions using N2O stable isotopes in ice cores
title_fullStr N2O changes from the Last Glacial Maximum to the preindustrial – Part 1: Quantitative reconstruction of terrestrial and marine emissions using N2O stable isotopes in ice cores
title_full_unstemmed N2O changes from the Last Glacial Maximum to the preindustrial – Part 1: Quantitative reconstruction of terrestrial and marine emissions using N2O stable isotopes in ice cores
title_sort n2o changes from the last glacial maximum to the preindustrial – part 1: quantitative reconstruction of terrestrial and marine emissions using n2o stable isotopes in ice cores
publisher Copernicus Publications
publishDate 2019
url https://doi.org/10.5194/bg-16-3997-2019
https://noa.gwlb.de/receive/cop_mods_00041086
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00040708/bg-16-3997-2019.pdf
https://bg.copernicus.org/articles/16/3997/2019/bg-16-3997-2019.pdf
genre ice core
genre_facet ice core
op_relation Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189
https://doi.org/10.5194/bg-16-3997-2019
https://noa.gwlb.de/receive/cop_mods_00041086
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00040708/bg-16-3997-2019.pdf
https://bg.copernicus.org/articles/16/3997/2019/bg-16-3997-2019.pdf
op_rights https://creativecommons.org/licenses/by/4.0/
uneingeschränkt
info:eu-repo/semantics/openAccess
op_rightsnorm CC-BY
op_doi https://doi.org/10.5194/bg-16-3997-2019
container_title Biogeosciences
container_volume 16
container_issue 20
container_start_page 3997
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