Unexpected changes to the global methane budget over the past 2000 years
We report a 2000-year Antarctic ice-core record of stable carbon isotope measurements in atmospheric methane (delta13CH4). Large delta13CH4 variations indicate that the methane budget varied unexpectedly during the late preindustrial Holocene (circa 0 to 1700 A.D.). During the first thousand years (...
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Online Access: | https://doi.org/10.1126/science.1115193 http://ecite.utas.edu.au/112096 |
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ftunivtasecite:oai:ecite.utas.edu.au:112096 2023-05-15T13:49:03+02:00 Unexpected changes to the global methane budget over the past 2000 years Ferretti, DF Miller, JB White, JWC Etheridge, DM Lassey, KR Lowe, DC MacFarling Meure, CM Dreier, MF Trudinger, CM van Ommen, TD Langenfelds, RL 2005 https://doi.org/10.1126/science.1115193 http://ecite.utas.edu.au/112096 en eng Amer Assoc Advancement Science http://dx.doi.org/10.1126/science.1115193 Ferretti, DF and Miller, JB and White, JWC and Etheridge, DM and Lassey, KR and Lowe, DC and MacFarling Meure, CM and Dreier, MF and Trudinger, CM and van Ommen, TD and Langenfelds, RL, Unexpected changes to the global methane budget over the past 2000 years, Science, 309, (5741) pp. 1714-1717. ISSN 0036-8075 (2005) [Refereed Article] http://ecite.utas.edu.au/112096 Earth Sciences Geology Marine Geoscience Refereed Article PeerReviewed 2005 ftunivtasecite https://doi.org/10.1126/science.1115193 2019-12-13T22:12:22Z We report a 2000-year Antarctic ice-core record of stable carbon isotope measurements in atmospheric methane (delta13CH4). Large delta13CH4 variations indicate that the methane budget varied unexpectedly during the late preindustrial Holocene (circa 0 to 1700 A.D.). During the first thousand years (0 to 1000 A.D.), delta13CH4 was at least 2 per mil enriched compared to expected values, and during the following 700 years, an about 2 per mil depletion occurred. Our modeled methane source partitioning implies that biomass burning emissions were high from 0 to 1000 A.D. but reduced by almost approximately 40% over the next 700 years. We suggest that both human activities and natural climate change influenced preindustrial biomass burning emissions and that these emissions have been previously understated in late preindustrial Holocene methane budget research. Article in Journal/Newspaper Antarc* Antarctic ice core eCite UTAS (University of Tasmania) Antarctic Science 309 5741 1714 1717 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Geology Marine Geoscience |
spellingShingle |
Earth Sciences Geology Marine Geoscience Ferretti, DF Miller, JB White, JWC Etheridge, DM Lassey, KR Lowe, DC MacFarling Meure, CM Dreier, MF Trudinger, CM van Ommen, TD Langenfelds, RL Unexpected changes to the global methane budget over the past 2000 years |
topic_facet |
Earth Sciences Geology Marine Geoscience |
description |
We report a 2000-year Antarctic ice-core record of stable carbon isotope measurements in atmospheric methane (delta13CH4). Large delta13CH4 variations indicate that the methane budget varied unexpectedly during the late preindustrial Holocene (circa 0 to 1700 A.D.). During the first thousand years (0 to 1000 A.D.), delta13CH4 was at least 2 per mil enriched compared to expected values, and during the following 700 years, an about 2 per mil depletion occurred. Our modeled methane source partitioning implies that biomass burning emissions were high from 0 to 1000 A.D. but reduced by almost approximately 40% over the next 700 years. We suggest that both human activities and natural climate change influenced preindustrial biomass burning emissions and that these emissions have been previously understated in late preindustrial Holocene methane budget research. |
format |
Article in Journal/Newspaper |
author |
Ferretti, DF Miller, JB White, JWC Etheridge, DM Lassey, KR Lowe, DC MacFarling Meure, CM Dreier, MF Trudinger, CM van Ommen, TD Langenfelds, RL |
author_facet |
Ferretti, DF Miller, JB White, JWC Etheridge, DM Lassey, KR Lowe, DC MacFarling Meure, CM Dreier, MF Trudinger, CM van Ommen, TD Langenfelds, RL |
author_sort |
Ferretti, DF |
title |
Unexpected changes to the global methane budget over the past 2000 years |
title_short |
Unexpected changes to the global methane budget over the past 2000 years |
title_full |
Unexpected changes to the global methane budget over the past 2000 years |
title_fullStr |
Unexpected changes to the global methane budget over the past 2000 years |
title_full_unstemmed |
Unexpected changes to the global methane budget over the past 2000 years |
title_sort |
unexpected changes to the global methane budget over the past 2000 years |
publisher |
Amer Assoc Advancement Science |
publishDate |
2005 |
url |
https://doi.org/10.1126/science.1115193 http://ecite.utas.edu.au/112096 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic ice core |
genre_facet |
Antarc* Antarctic ice core |
op_relation |
http://dx.doi.org/10.1126/science.1115193 Ferretti, DF and Miller, JB and White, JWC and Etheridge, DM and Lassey, KR and Lowe, DC and MacFarling Meure, CM and Dreier, MF and Trudinger, CM and van Ommen, TD and Langenfelds, RL, Unexpected changes to the global methane budget over the past 2000 years, Science, 309, (5741) pp. 1714-1717. ISSN 0036-8075 (2005) [Refereed Article] http://ecite.utas.edu.au/112096 |
op_doi |
https://doi.org/10.1126/science.1115193 |
container_title |
Science |
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309 |
container_issue |
5741 |
container_start_page |
1714 |
op_container_end_page |
1717 |
_version_ |
1766250678139748352 |