Improved estimates of preindustrial biomass burning reduce the magnitude of aerosol climate forcing in the Southern Hemisphere.
Fire plays a pivotal role in shaping terrestrial ecosystems and the chemical composition of the atmosphere and thus influences Earth’s climate. The trend and magnitude of fire activity over the past few centuries are controversial, which hinders understanding of preindustrial to present-day aerosol...
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American Association for the Advancement of Science
2021
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Online Access: | http://nora.nerc.ac.uk/id/eprint/530435/ https://nora.nerc.ac.uk/id/eprint/530435/1/eabc1379.full.pdf https://advances.sciencemag.org/content/7/22/eabc1379 |
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ftnerc:oai:nora.nerc.ac.uk:530435 2023-05-15T13:41:45+02:00 Improved estimates of preindustrial biomass burning reduce the magnitude of aerosol climate forcing in the Southern Hemisphere. Liu, P. Kaplan, J.O. Mickley, L.J. Li, Y. Chellman, N.J. Arienzo, M.M. Kodros, J.K. Pierce, J.R. Sigl, M. Frietag, J. Mulvaney, R. Curran, M.A.J. McConnell, J.R. 2021-05-28 text http://nora.nerc.ac.uk/id/eprint/530435/ https://nora.nerc.ac.uk/id/eprint/530435/1/eabc1379.full.pdf https://advances.sciencemag.org/content/7/22/eabc1379 en eng American Association for the Advancement of Science https://nora.nerc.ac.uk/id/eprint/530435/1/eabc1379.full.pdf Liu, P.; Kaplan, J.O.; Mickley, L.J.; Li, Y.; Chellman, N.J.; Arienzo, M.M.; Kodros, J.K.; Pierce, J.R.; Sigl, M.; Frietag, J.; Mulvaney, R. orcid:0000-0002-5372-8148 Curran, M.A.J.; McConnell, J.R. 2021 Improved estimates of preindustrial biomass burning reduce the magnitude of aerosol climate forcing in the Southern Hemisphere. Science Advances, 7 (22), eabc1379. 11, pp. https://doi.org/10.1126/sciadv.abc1379 <https://doi.org/10.1126/sciadv.abc1379> cc_by_nc_4 CC-BY-NC Publication - Article PeerReviewed 2021 ftnerc https://doi.org/10.1126/sciadv.abc1379 2023-02-04T19:52:12Z Fire plays a pivotal role in shaping terrestrial ecosystems and the chemical composition of the atmosphere and thus influences Earth’s climate. The trend and magnitude of fire activity over the past few centuries are controversial, which hinders understanding of preindustrial to present-day aerosol radiative forcing. Here, we present evidence from records of 14 Antarctic ice cores and 1 central Andean ice core, suggesting that historical fire activity in the Southern Hemisphere (SH) exceeded present-day levels. To understand this observation, we use a global fire model to show that overall SH fire emissions could have declined by 30% over the 20th century, possibly because of the rapid expansion of land use for agriculture and animal production in middle to high latitudes. Radiative forcing calculations suggest that the decreasing trend in SH fire emissions over the past century largely compensates for the cooling effect of increasing aerosols from fossil fuel and biofuel sources. Article in Journal/Newspaper Antarc* Antarctic ice core Natural Environment Research Council: NERC Open Research Archive Antarctic Science Advances 7 22 eabc1379 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Fire plays a pivotal role in shaping terrestrial ecosystems and the chemical composition of the atmosphere and thus influences Earth’s climate. The trend and magnitude of fire activity over the past few centuries are controversial, which hinders understanding of preindustrial to present-day aerosol radiative forcing. Here, we present evidence from records of 14 Antarctic ice cores and 1 central Andean ice core, suggesting that historical fire activity in the Southern Hemisphere (SH) exceeded present-day levels. To understand this observation, we use a global fire model to show that overall SH fire emissions could have declined by 30% over the 20th century, possibly because of the rapid expansion of land use for agriculture and animal production in middle to high latitudes. Radiative forcing calculations suggest that the decreasing trend in SH fire emissions over the past century largely compensates for the cooling effect of increasing aerosols from fossil fuel and biofuel sources. |
format |
Article in Journal/Newspaper |
author |
Liu, P. Kaplan, J.O. Mickley, L.J. Li, Y. Chellman, N.J. Arienzo, M.M. Kodros, J.K. Pierce, J.R. Sigl, M. Frietag, J. Mulvaney, R. Curran, M.A.J. McConnell, J.R. |
spellingShingle |
Liu, P. Kaplan, J.O. Mickley, L.J. Li, Y. Chellman, N.J. Arienzo, M.M. Kodros, J.K. Pierce, J.R. Sigl, M. Frietag, J. Mulvaney, R. Curran, M.A.J. McConnell, J.R. Improved estimates of preindustrial biomass burning reduce the magnitude of aerosol climate forcing in the Southern Hemisphere. |
author_facet |
Liu, P. Kaplan, J.O. Mickley, L.J. Li, Y. Chellman, N.J. Arienzo, M.M. Kodros, J.K. Pierce, J.R. Sigl, M. Frietag, J. Mulvaney, R. Curran, M.A.J. McConnell, J.R. |
author_sort |
Liu, P. |
title |
Improved estimates of preindustrial biomass burning reduce the magnitude of aerosol climate forcing in the Southern Hemisphere. |
title_short |
Improved estimates of preindustrial biomass burning reduce the magnitude of aerosol climate forcing in the Southern Hemisphere. |
title_full |
Improved estimates of preindustrial biomass burning reduce the magnitude of aerosol climate forcing in the Southern Hemisphere. |
title_fullStr |
Improved estimates of preindustrial biomass burning reduce the magnitude of aerosol climate forcing in the Southern Hemisphere. |
title_full_unstemmed |
Improved estimates of preindustrial biomass burning reduce the magnitude of aerosol climate forcing in the Southern Hemisphere. |
title_sort |
improved estimates of preindustrial biomass burning reduce the magnitude of aerosol climate forcing in the southern hemisphere. |
publisher |
American Association for the Advancement of Science |
publishDate |
2021 |
url |
http://nora.nerc.ac.uk/id/eprint/530435/ https://nora.nerc.ac.uk/id/eprint/530435/1/eabc1379.full.pdf https://advances.sciencemag.org/content/7/22/eabc1379 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic ice core |
genre_facet |
Antarc* Antarctic ice core |
op_relation |
https://nora.nerc.ac.uk/id/eprint/530435/1/eabc1379.full.pdf Liu, P.; Kaplan, J.O.; Mickley, L.J.; Li, Y.; Chellman, N.J.; Arienzo, M.M.; Kodros, J.K.; Pierce, J.R.; Sigl, M.; Frietag, J.; Mulvaney, R. orcid:0000-0002-5372-8148 Curran, M.A.J.; McConnell, J.R. 2021 Improved estimates of preindustrial biomass burning reduce the magnitude of aerosol climate forcing in the Southern Hemisphere. Science Advances, 7 (22), eabc1379. 11, pp. https://doi.org/10.1126/sciadv.abc1379 <https://doi.org/10.1126/sciadv.abc1379> |
op_rights |
cc_by_nc_4 |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.1126/sciadv.abc1379 |
container_title |
Science Advances |
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7 |
container_issue |
22 |
container_start_page |
eabc1379 |
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1766157445251465216 |