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) by performing time-slice experiments with a methane-enabled version of MPI-ESM, the Max Planck Institute for Meteorology Earth System Model. We consider all natural sourc...
Published in: | Climate of the Past |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2020
|
Subjects: | |
Online Access: | http://hdl.handle.net/21.11116/0000-0005-171A-5 http://hdl.handle.net/21.11116/0000-0005-85F9-C http://hdl.handle.net/21.11116/0000-0005-FF2E-A |
id |
ftpubman:oai:pure.mpg.de:item_3158698 |
---|---|
record_format |
openpolar |
spelling |
ftpubman:oai:pure.mpg.de:item_3158698 2023-08-27T04:10:02+02:00 Terrestrial methane emissions from the Last Glacial Maximum to the preindustrial period Kleinen, T. Mikolajewicz, U. Brovkin, V. 2020-03-30 application/zip application/pdf http://hdl.handle.net/21.11116/0000-0005-171A-5 http://hdl.handle.net/21.11116/0000-0005-85F9-C http://hdl.handle.net/21.11116/0000-0005-FF2E-A eng eng info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-16-575-2020 http://hdl.handle.net/21.11116/0000-0005-171A-5 http://hdl.handle.net/21.11116/0000-0005-85F9-C http://hdl.handle.net/21.11116/0000-0005-FF2E-A info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Climate of the Past info:eu-repo/semantics/article 2020 ftpubman https://doi.org/10.5194/cp-16-575-2020 2023-08-02T01:14:36Z We investigate the changes in terrestrial natural methane emissions between the Last Glacial Maximum (LGM) and preindustrial (PI) by performing time-slice experiments with a methane-enabled version of MPI-ESM, the Max Planck Institute for Meteorology 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 north 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 Max Planck Society: MPG.PuRe Climate of the Past 16 2 575 595 |
institution |
Open Polar |
collection |
Max Planck Society: MPG.PuRe |
op_collection_id |
ftpubman |
language |
English |
description |
We investigate the changes in terrestrial natural methane emissions between the Last Glacial Maximum (LGM) and preindustrial (PI) by performing time-slice experiments with a methane-enabled version of MPI-ESM, the Max Planck Institute for Meteorology 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 north 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 |
Kleinen, T. Mikolajewicz, U. Brovkin, V. |
spellingShingle |
Kleinen, T. Mikolajewicz, U. Brovkin, V. Terrestrial methane emissions from the Last Glacial Maximum to the preindustrial period |
author_facet |
Kleinen, T. Mikolajewicz, U. Brovkin, V. |
author_sort |
Kleinen, T. |
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 |
publishDate |
2020 |
url |
http://hdl.handle.net/21.11116/0000-0005-171A-5 http://hdl.handle.net/21.11116/0000-0005-85F9-C http://hdl.handle.net/21.11116/0000-0005-FF2E-A |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Climate of the Past |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-16-575-2020 http://hdl.handle.net/21.11116/0000-0005-171A-5 http://hdl.handle.net/21.11116/0000-0005-85F9-C http://hdl.handle.net/21.11116/0000-0005-FF2E-A |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ |
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_ |
1775351771993997312 |