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 contro- versial, which hinders understanding of preindustrial to present-day aeroso...
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ftawi:oai:epic.awi.de:55209 2024-09-15T17:46:57+00:00 Improved estimates of preindustrial biomass burning reduce the magnitude of aerosol climate forcing in the Southern Hemisphere Liu, Pengfei Kaplan, Jed O. Mickley, Loretta J. Li, Yang Chellman, Nathan J. Arienzo, Monica M. Kodros, John K. Pierce, Jeffrey R. Sigl, Michael Freitag, Johannes Mulvaney, Robert Curran, Mark A. J. McConnell, Joseph R. 2021-05-22 https://epic.awi.de/id/eprint/55209/ https://doi.org/10.1126/sciadv.abc1379 https://hdl.handle.net/10013/epic.15197cac-a883-45c0-a950-d6a06aebb35d unknown Liu, P. , Kaplan, J. O. , Mickley, L. J. , Li, Y. , Chellman, N. J. , Arienzo, M. M. , Kodros, J. K. , Pierce, J. R. , Sigl, M. , Freitag, J. orcid:0000-0003-2654-9440 , Mulvaney, R. , Curran, M. A. J. and 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) . doi:10.1126/sciadv.abc1379 <https://doi.org/10.1126/sciadv.abc1379> , hdl:10013/epic.15197cac-a883-45c0-a950-d6a06aebb35d EPIC3Science Advances, 7(22), ISSN: 2375-2548 Article isiRev 2021 ftawi https://doi.org/10.1126/sciadv.abc1379 2024-06-24T04:27:29Z 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 contro- versial, 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 Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Science Advances 7 22 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
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 contro- versial, 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, Pengfei Kaplan, Jed O. Mickley, Loretta J. Li, Yang Chellman, Nathan J. Arienzo, Monica M. Kodros, John K. Pierce, Jeffrey R. Sigl, Michael Freitag, Johannes Mulvaney, Robert Curran, Mark A. J. McConnell, Joseph R. |
spellingShingle |
Liu, Pengfei Kaplan, Jed O. Mickley, Loretta J. Li, Yang Chellman, Nathan J. Arienzo, Monica M. Kodros, John K. Pierce, Jeffrey R. Sigl, Michael Freitag, Johannes Mulvaney, Robert Curran, Mark A. J. McConnell, Joseph R. Improved estimates of preindustrial biomass burning reduce the magnitude of aerosol climate forcing in the Southern Hemisphere |
author_facet |
Liu, Pengfei Kaplan, Jed O. Mickley, Loretta J. Li, Yang Chellman, Nathan J. Arienzo, Monica M. Kodros, John K. Pierce, Jeffrey R. Sigl, Michael Freitag, Johannes Mulvaney, Robert Curran, Mark A. J. McConnell, Joseph R. |
author_sort |
Liu, Pengfei |
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 |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/55209/ https://doi.org/10.1126/sciadv.abc1379 https://hdl.handle.net/10013/epic.15197cac-a883-45c0-a950-d6a06aebb35d |
genre |
Antarc* Antarctic ice core |
genre_facet |
Antarc* Antarctic ice core |
op_source |
EPIC3Science Advances, 7(22), ISSN: 2375-2548 |
op_relation |
Liu, P. , Kaplan, J. O. , Mickley, L. J. , Li, Y. , Chellman, N. J. , Arienzo, M. M. , Kodros, J. K. , Pierce, J. R. , Sigl, M. , Freitag, J. orcid:0000-0003-2654-9440 , Mulvaney, R. , Curran, M. A. J. and 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) . doi:10.1126/sciadv.abc1379 <https://doi.org/10.1126/sciadv.abc1379> , hdl:10013/epic.15197cac-a883-45c0-a950-d6a06aebb35d |
op_doi |
https://doi.org/10.1126/sciadv.abc1379 |
container_title |
Science Advances |
container_volume |
7 |
container_issue |
22 |
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1810495398633013248 |