Atmospheric Nitrous Oxide Variations on Centennial Time Scales During the Past Two Millennia
The continuous growth of atmospheric nitrous oxide (N2O) is of concern for its potential role in global warming and future stratospheric ozone destruction. Climate feedbacks that enhance N2O emissions in response to global warming are not well understood, and past records of N2O from ice cores are n...
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| Veröffentlicht in: | Global biogeochemical cycles 2020-09, Vol.34 (9), p.n/a |
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| creator | Ryu, Y. Ahn, J. Yang, J.‐W. Brook, E. J. Timmermann, A. Blunier, T. Hur, S. Kim, S.‐J. |
| description | The continuous growth of atmospheric nitrous oxide (N2O) is of concern for its potential role in global warming and future stratospheric ozone destruction. Climate feedbacks that enhance N2O emissions in response to global warming are not well understood, and past records of N2O from ice cores are not sufficiently well resolved to examine the underlying climate‐N2O feedbacks on societally relevant time scales. Here, we present a new high‐resolution and high‐precision N2O reconstruction obtained from the Greenland NEEM (North Greenland Eemian Ice Drilling) and the Antarctic Styx Glacier ice cores. Covering the N2O history of the past two millennia, our reconstruction shows a centennial‐scale variability of ~10 ppb. A pronounced minimum at ~600 CE coincides with the reorganizations of tropical hydroclimate and ocean productivity changes. Comparisons with proxy records suggest association of centennial‐ to millennial‐scale variations in N2O with changes in tropical and subtropical land hydrology and marine productivity.
Plain Language Summary
Nitrous oxide (N2O) is a greenhouse and ozone‐depleting gas. The growing level of N2O in the atmosphere is of global concern, and records of past N2O variations can provide an important context for understanding the links between N2O and climate change. In this study, we report new, high‐quality N2O records covering the last two millennia using ice cores obtained from Greenland and Antarctica. Our N2O records show rapid centennial‐scale changes in atmospheric N2O and confirm a pronounced minimum near 600 CE. Comparison with climate records suggests that hydroclimate change on land and changes in marine productivity contribute to centennial‐ to millennial‐scale N2O variations.
Key Points
We report records of N2O concentration for the last 2,000 yr from the Styx ice core in Antarctca and NEEM ice core in Greenland
The data accurately reveal the timing and magnitude of N2O variations on centennial time scales
Variations in N2O are associated with changes in tropical and subtropical land hydrology and marine productivity |
| doi_str_mv | 10.1029/2020GB006568 |
| format | Article |
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Plain Language Summary
Nitrous oxide (N2O) is a greenhouse and ozone‐depleting gas. The growing level of N2O in the atmosphere is of global concern, and records of past N2O variations can provide an important context for understanding the links between N2O and climate change. In this study, we report new, high‐quality N2O records covering the last two millennia using ice cores obtained from Greenland and Antarctica. Our N2O records show rapid centennial‐scale changes in atmospheric N2O and confirm a pronounced minimum near 600 CE. Comparison with climate records suggests that hydroclimate change on land and changes in marine productivity contribute to centennial‐ to millennial‐scale N2O variations.
Key Points
We report records of N2O concentration for the last 2,000 yr from the Styx ice core in Antarctca and NEEM ice core in Greenland
The data accurately reveal the timing and magnitude of N2O variations on centennial time scales
Variations in N2O are associated with changes in tropical and subtropical land hydrology and marine productivity</description><identifier>ISSN: 0886-6236</identifier><identifier>EISSN: 1944-9224</identifier><identifier>EISSN: 1944-8224</identifier><identifier>DOI: 10.1029/2020GB006568</identifier><language>eng</language><publisher>Washington: Blackwell Publishing Ltd</publisher><subject>Antarctic glaciers ; Climate change ; Cores ; Drilling ; Glacier ice ; Glaciers ; Global warming ; Hydroclimate ; Hydrology ; Ice ; ice core ; Ice cores ; Neem ; Nitrous oxide ; Ocean, Atmosphere ; Ozone ; Ozone depletion ; Ozone destruction ; paleoclimate ; Productivity ; Reconstruction ; Records ; Sciences of the Universe ; Stratospheric warming ; Time ; Tropical climate ; Variation</subject><ispartof>Global biogeochemical cycles, 2020-09, Vol.34 (9), p.n/a</ispartof><rights>2020. The Authors.</rights><rights>2020. This article is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>Attribution</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a4673-d85fd25e66b60cd5794d6cda033eae544157822efcdc7a6e2b94bfdb49922d293</citedby><cites>FETCH-LOGICAL-a4673-d85fd25e66b60cd5794d6cda033eae544157822efcdc7a6e2b94bfdb49922d293</cites><orcidid>0000-0002-6232-8082 ; 0000-0003-2280-2832 ; 0000-0001-8397-9274 ; 0000-0001-5438-0115 ; 0000-0002-6065-7747 ; 0000-0002-3509-8082</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2F2020GB006568$$EPDF$$P50$$Gwiley$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2020GB006568$$EHTML$$P50$$Gwiley$$Hfree_for_read</linktohtml><link.rule.ids>230,314,776,780,881,1411,1427,11494,27903,27904,45553,45554,46387,46446,46811,46870</link.rule.ids><backlink>$$Uhttps://hal.science/hal-03032374$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Ryu, Y.</creatorcontrib><creatorcontrib>Ahn, J.</creatorcontrib><creatorcontrib>Yang, J.‐W.</creatorcontrib><creatorcontrib>Brook, E. J.</creatorcontrib><creatorcontrib>Timmermann, A.</creatorcontrib><creatorcontrib>Blunier, T.</creatorcontrib><creatorcontrib>Hur, S.</creatorcontrib><creatorcontrib>Kim, S.‐J.</creatorcontrib><title>Atmospheric Nitrous Oxide Variations on Centennial Time Scales During the Past Two Millennia</title><title>Global biogeochemical cycles</title><description>The continuous growth of atmospheric nitrous oxide (N2O) is of concern for its potential role in global warming and future stratospheric ozone destruction. Climate feedbacks that enhance N2O emissions in response to global warming are not well understood, and past records of N2O from ice cores are not sufficiently well resolved to examine the underlying climate‐N2O feedbacks on societally relevant time scales. Here, we present a new high‐resolution and high‐precision N2O reconstruction obtained from the Greenland NEEM (North Greenland Eemian Ice Drilling) and the Antarctic Styx Glacier ice cores. Covering the N2O history of the past two millennia, our reconstruction shows a centennial‐scale variability of ~10 ppb. A pronounced minimum at ~600 CE coincides with the reorganizations of tropical hydroclimate and ocean productivity changes. Comparisons with proxy records suggest association of centennial‐ to millennial‐scale variations in N2O with changes in tropical and subtropical land hydrology and marine productivity.
Plain Language Summary
Nitrous oxide (N2O) is a greenhouse and ozone‐depleting gas. The growing level of N2O in the atmosphere is of global concern, and records of past N2O variations can provide an important context for understanding the links between N2O and climate change. In this study, we report new, high‐quality N2O records covering the last two millennia using ice cores obtained from Greenland and Antarctica. Our N2O records show rapid centennial‐scale changes in atmospheric N2O and confirm a pronounced minimum near 600 CE. Comparison with climate records suggests that hydroclimate change on land and changes in marine productivity contribute to centennial‐ to millennial‐scale N2O variations.
Key Points
We report records of N2O concentration for the last 2,000 yr from the Styx ice core in Antarctca and NEEM ice core in Greenland
The data accurately reveal the timing and magnitude of N2O variations on centennial time scales
Variations in N2O are associated with changes in tropical and subtropical land hydrology and marine productivity</description><subject>Antarctic glaciers</subject><subject>Climate change</subject><subject>Cores</subject><subject>Drilling</subject><subject>Glacier ice</subject><subject>Glaciers</subject><subject>Global warming</subject><subject>Hydroclimate</subject><subject>Hydrology</subject><subject>Ice</subject><subject>ice core</subject><subject>Ice cores</subject><subject>Neem</subject><subject>Nitrous oxide</subject><subject>Ocean, Atmosphere</subject><subject>Ozone</subject><subject>Ozone depletion</subject><subject>Ozone destruction</subject><subject>paleoclimate</subject><subject>Productivity</subject><subject>Reconstruction</subject><subject>Records</subject><subject>Sciences of the Universe</subject><subject>Stratospheric warming</subject><subject>Time</subject><subject>Tropical climate</subject><subject>Variation</subject><issn>0886-6236</issn><issn>1944-9224</issn><issn>1944-8224</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>24P</sourceid><recordid>eNp90F1LwzAUBuAgCs7pnT8g4JVgNV9Nm8tt6iZMJzi9EkLapC6ja2bSOvfv7ayIV14deHl4OecAcIrRJUZEXBFE0HiIEI95ugd6WDAWCULYPuihNOURJ5QfgqMQlghhFseiB14H9cqF9cJ4m8MHW3vXBDj7tNrAF-Wtqq2rAnQVHJmqNlVlVQnndmXgU65KE-B14231BuuFgY8q1HC-cfDeluU3PQYHhSqDOfmZffB8ezMfTaLpbHw3GkwjxXhCI53GhSax4TzjKNdxIpjmuVaIUqNMzBiOk5QQU-Q6TxQ3JBMsK3TGRHucJoL2wXnXu1ClXHu7Un4rnbJyMpjKXYYoooQm7AO39qyza-_eGxNquXSNr9r1JGGMI5ykCW_VRady70LwpvitxUjufi3__rrlpOMbW5rtv1aOhyPSppR-AR5TfnI</recordid><startdate>202009</startdate><enddate>202009</enddate><creator>Ryu, Y.</creator><creator>Ahn, J.</creator><creator>Yang, J.‐W.</creator><creator>Brook, E. 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J.</creatorcontrib><creatorcontrib>Timmermann, A.</creatorcontrib><creatorcontrib>Blunier, T.</creatorcontrib><creatorcontrib>Hur, S.</creatorcontrib><creatorcontrib>Kim, S.‐J.</creatorcontrib><collection>Wiley Online Library Open Access</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><jtitle>Global biogeochemical cycles</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ryu, Y.</au><au>Ahn, J.</au><au>Yang, J.‐W.</au><au>Brook, E. J.</au><au>Timmermann, A.</au><au>Blunier, T.</au><au>Hur, S.</au><au>Kim, S.‐J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Atmospheric Nitrous Oxide Variations on Centennial Time Scales During the Past Two Millennia</atitle><jtitle>Global biogeochemical cycles</jtitle><date>2020-09</date><risdate>2020</risdate><volume>34</volume><issue>9</issue><epage>n/a</epage><issn>0886-6236</issn><eissn>1944-9224</eissn><eissn>1944-8224</eissn><abstract>The continuous growth of atmospheric nitrous oxide (N2O) is of concern for its potential role in global warming and future stratospheric ozone destruction. Climate feedbacks that enhance N2O emissions in response to global warming are not well understood, and past records of N2O from ice cores are not sufficiently well resolved to examine the underlying climate‐N2O feedbacks on societally relevant time scales. Here, we present a new high‐resolution and high‐precision N2O reconstruction obtained from the Greenland NEEM (North Greenland Eemian Ice Drilling) and the Antarctic Styx Glacier ice cores. Covering the N2O history of the past two millennia, our reconstruction shows a centennial‐scale variability of ~10 ppb. A pronounced minimum at ~600 CE coincides with the reorganizations of tropical hydroclimate and ocean productivity changes. Comparisons with proxy records suggest association of centennial‐ to millennial‐scale variations in N2O with changes in tropical and subtropical land hydrology and marine productivity.
Plain Language Summary
Nitrous oxide (N2O) is a greenhouse and ozone‐depleting gas. The growing level of N2O in the atmosphere is of global concern, and records of past N2O variations can provide an important context for understanding the links between N2O and climate change. In this study, we report new, high‐quality N2O records covering the last two millennia using ice cores obtained from Greenland and Antarctica. Our N2O records show rapid centennial‐scale changes in atmospheric N2O and confirm a pronounced minimum near 600 CE. Comparison with climate records suggests that hydroclimate change on land and changes in marine productivity contribute to centennial‐ to millennial‐scale N2O variations.
Key Points
We report records of N2O concentration for the last 2,000 yr from the Styx ice core in Antarctca and NEEM ice core in Greenland
The data accurately reveal the timing and magnitude of N2O variations on centennial time scales
Variations in N2O are associated with changes in tropical and subtropical land hydrology and marine productivity</abstract><cop>Washington</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2020GB006568</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0002-6232-8082</orcidid><orcidid>https://orcid.org/0000-0003-2280-2832</orcidid><orcidid>https://orcid.org/0000-0001-8397-9274</orcidid><orcidid>https://orcid.org/0000-0001-5438-0115</orcidid><orcidid>https://orcid.org/0000-0002-6065-7747</orcidid><orcidid>https://orcid.org/0000-0002-3509-8082</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Antarctic glaciers Climate change Cores Drilling Glacier ice Glaciers Global warming Hydroclimate Hydrology Ice ice core Ice cores Neem Nitrous oxide Ocean, Atmosphere Ozone Ozone depletion Ozone destruction paleoclimate Productivity Reconstruction Records Sciences of the Universe Stratospheric warming Time Tropical climate Variation |
| title | Atmospheric Nitrous Oxide Variations on Centennial Time Scales During the Past Two Millennia |
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