Terrestrial methane emissions from the Last Glacial Maximum to the preindustrial period
We investigate the changes in terrestrial natural methane emissions between the Last Glacial Maximum (LGM) and preindustrial (PI) periods by performing time-slice experiments with a methane-enabled version of MPI-ESM, the Max Planck Institute Earth System Model. We consider all natural sources of me...
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Language: | English |
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Copernicus Publications
2020
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Online Access: | https://doi.org/10.5194/cp-16-575-2020 https://www.clim-past.net/16/575/2020/cp-16-575-2020.pdf https://doaj.org/article/3694102466dd4fa68796a8548b30e2fc |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:3694102466dd4fa68796a8548b30e2fc 2023-05-15T16:40:57+02:00 Terrestrial methane emissions from the Last Glacial Maximum to the preindustrial period T. Kleinen U. Mikolajewicz V. Brovkin 2020-03-01 https://doi.org/10.5194/cp-16-575-2020 https://www.clim-past.net/16/575/2020/cp-16-575-2020.pdf https://doaj.org/article/3694102466dd4fa68796a8548b30e2fc en eng Copernicus Publications doi:10.5194/cp-16-575-2020 1814-9324 1814-9332 https://www.clim-past.net/16/575/2020/cp-16-575-2020.pdf https://doaj.org/article/3694102466dd4fa68796a8548b30e2fc undefined Climate of the Past, Vol 16, Pp 575-595 (2020) envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2020 fttriple https://doi.org/10.5194/cp-16-575-2020 2023-01-22T19:12:42Z We investigate the changes in terrestrial natural methane emissions between the Last Glacial Maximum (LGM) and preindustrial (PI) periods by performing time-slice experiments with a methane-enabled version of MPI-ESM, the Max Planck Institute Earth System Model. We consider all natural sources of methane except for emissions from wild animals and geological sources, i.e. emissions from wetlands, fires, and termites. Changes are dominated by changes in tropical wetland emissions, with mid-to-high-latitude wetlands playing a secondary role, and all other natural sources being of minor importance. The emissions are determined by the interplay of vegetation productivity, a function of CO2 and temperature; source area size, affected by sea level and ice sheet extent; and the state of the West African monsoon, with increased emissions from northern Africa during strong monsoon phases. We show that it is possible to explain the difference in atmospheric methane between LGM and PI purely by changes in emissions. As emissions more than double between LGM and PI, changes in the atmospheric lifetime of CH4, as proposed in other studies, are not required. Article in Journal/Newspaper Ice Sheet Unknown Climate of the Past 16 2 575 595 |
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English |
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envir geo T. Kleinen U. Mikolajewicz V. Brovkin Terrestrial methane emissions from the Last Glacial Maximum to the preindustrial period |
topic_facet |
envir geo |
description |
We investigate the changes in terrestrial natural methane emissions between the Last Glacial Maximum (LGM) and preindustrial (PI) periods by performing time-slice experiments with a methane-enabled version of MPI-ESM, the Max Planck Institute Earth System Model. We consider all natural sources of methane except for emissions from wild animals and geological sources, i.e. emissions from wetlands, fires, and termites. Changes are dominated by changes in tropical wetland emissions, with mid-to-high-latitude wetlands playing a secondary role, and all other natural sources being of minor importance. The emissions are determined by the interplay of vegetation productivity, a function of CO2 and temperature; source area size, affected by sea level and ice sheet extent; and the state of the West African monsoon, with increased emissions from northern Africa during strong monsoon phases. We show that it is possible to explain the difference in atmospheric methane between LGM and PI purely by changes in emissions. As emissions more than double between LGM and PI, changes in the atmospheric lifetime of CH4, as proposed in other studies, are not required. |
format |
Article in Journal/Newspaper |
author |
T. Kleinen U. Mikolajewicz V. Brovkin |
author_facet |
T. Kleinen U. Mikolajewicz V. Brovkin |
author_sort |
T. Kleinen |
title |
Terrestrial methane emissions from the Last Glacial Maximum to the preindustrial period |
title_short |
Terrestrial methane emissions from the Last Glacial Maximum to the preindustrial period |
title_full |
Terrestrial methane emissions from the Last Glacial Maximum to the preindustrial period |
title_fullStr |
Terrestrial methane emissions from the Last Glacial Maximum to the preindustrial period |
title_full_unstemmed |
Terrestrial methane emissions from the Last Glacial Maximum to the preindustrial period |
title_sort |
terrestrial methane emissions from the last glacial maximum to the preindustrial period |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/cp-16-575-2020 https://www.clim-past.net/16/575/2020/cp-16-575-2020.pdf https://doaj.org/article/3694102466dd4fa68796a8548b30e2fc |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Climate of the Past, Vol 16, Pp 575-595 (2020) |
op_relation |
doi:10.5194/cp-16-575-2020 1814-9324 1814-9332 https://www.clim-past.net/16/575/2020/cp-16-575-2020.pdf https://doaj.org/article/3694102466dd4fa68796a8548b30e2fc |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-16-575-2020 |
container_title |
Climate of the Past |
container_volume |
16 |
container_issue |
2 |
container_start_page |
575 |
op_container_end_page |
595 |
_version_ |
1766031382953328640 |