Greenland records of aerosol source and atmospheric lifetime changes from the Eemian to the Holocene
The Northern Hemisphere experienced dramatic changes during the last glacial, featuring vast ice sheets and abrupt climate events, while high northern latitudes during the last interglacial (Eemian) were warmer than today. Here we use high-resolution aerosol records from the Greenland NEEM ice core...
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/203200 2024-01-14T10:07:17+01:00 Greenland records of aerosol source and atmospheric lifetime changes from the Eemian to the Holocene Schüpbach, S Fischer, Hubertus Bigler, M Erhardt, T Gfeller, G Leuenberger, D Mini, O Mulvaney, Robert Abram, Nerilie Fleet, L Frey, M M application/pdf http://hdl.handle.net/1885/203200 https://doi.org/10.1038/s41467-018-03924-3 https://openresearch-repository.anu.edu.au/bitstream/1885/203200/5/01_Sch%25C3%25BCpbach_Greenland_records_of_aerosol_2018.pdf.jpg en_AU eng Nature Research 2041-1723 http://hdl.handle.net/1885/203200 doi:10.1038/s41467-018-03924-3 https://openresearch-repository.anu.edu.au/bitstream/1885/203200/5/01_Sch%25C3%25BCpbach_Greenland_records_of_aerosol_2018.pdf.jpg © The Author(s) 2018 http://creativecommons.org/ licenses/by/4.0/ Creative Commons license Nature Communications Journal article ftanucanberra https://doi.org/10.1038/s41467-018-03924-3 2023-12-15T09:38:04Z The Northern Hemisphere experienced dramatic changes during the last glacial, featuring vast ice sheets and abrupt climate events, while high northern latitudes during the last interglacial (Eemian) were warmer than today. Here we use high-resolution aerosol records from the Greenland NEEM ice core to reconstruct the environmental alterations in aerosol source regions accompanying these changes. Separating source and transport effects, we find strongly reduced terrestrial biogenic emissions during glacial times reflecting net loss of vegetated area in North America. Rapid climate changes during the glacial have little effect on terrestrial biogenic aerosol emissions. A strong increase in terrestrial dust emissions during the coldest intervals indicates higher aridity and dust storm activity in East Asian deserts. Glacial sea salt aerosol emissions in the North Atlantic region increase only moderately (50%), likely due to sea ice expansion. Lower aerosol concentrations in Eemian ice compared to the Holocene are mainly due to shortened atmospheric residence time, while emissions changed little. It is supported by funding agencies and institutions in Belgium (FNRS-CFB and FWO), Canada (NRCan/GSC), China (CAS), Denmark (FIST), France (IPEV, CNRS/INSU, CEA and ANR), Germany (AWI), Iceland (RannIs), Japan (NIPR), Korea (KOPRI), The Netherlands (NWO/ALW), Sweden (VR), Switzerland (SNF), United Kingdom (NERC), and the USA (US NSF, Office of Polar Programs). Long-term support of ice core research at the University of Bern by SNF is gratefully acknowledged. Article in Journal/Newspaper Greenland ice core Iceland North Atlantic Sea ice Australian National University: ANU Digital Collections Canada Greenland Nature Communications 9 1 |
institution |
Open Polar |
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Australian National University: ANU Digital Collections |
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ftanucanberra |
language |
English |
description |
The Northern Hemisphere experienced dramatic changes during the last glacial, featuring vast ice sheets and abrupt climate events, while high northern latitudes during the last interglacial (Eemian) were warmer than today. Here we use high-resolution aerosol records from the Greenland NEEM ice core to reconstruct the environmental alterations in aerosol source regions accompanying these changes. Separating source and transport effects, we find strongly reduced terrestrial biogenic emissions during glacial times reflecting net loss of vegetated area in North America. Rapid climate changes during the glacial have little effect on terrestrial biogenic aerosol emissions. A strong increase in terrestrial dust emissions during the coldest intervals indicates higher aridity and dust storm activity in East Asian deserts. Glacial sea salt aerosol emissions in the North Atlantic region increase only moderately (50%), likely due to sea ice expansion. Lower aerosol concentrations in Eemian ice compared to the Holocene are mainly due to shortened atmospheric residence time, while emissions changed little. It is supported by funding agencies and institutions in Belgium (FNRS-CFB and FWO), Canada (NRCan/GSC), China (CAS), Denmark (FIST), France (IPEV, CNRS/INSU, CEA and ANR), Germany (AWI), Iceland (RannIs), Japan (NIPR), Korea (KOPRI), The Netherlands (NWO/ALW), Sweden (VR), Switzerland (SNF), United Kingdom (NERC), and the USA (US NSF, Office of Polar Programs). Long-term support of ice core research at the University of Bern by SNF is gratefully acknowledged. |
format |
Article in Journal/Newspaper |
author |
Schüpbach, S Fischer, Hubertus Bigler, M Erhardt, T Gfeller, G Leuenberger, D Mini, O Mulvaney, Robert Abram, Nerilie Fleet, L Frey, M M |
spellingShingle |
Schüpbach, S Fischer, Hubertus Bigler, M Erhardt, T Gfeller, G Leuenberger, D Mini, O Mulvaney, Robert Abram, Nerilie Fleet, L Frey, M M Greenland records of aerosol source and atmospheric lifetime changes from the Eemian to the Holocene |
author_facet |
Schüpbach, S Fischer, Hubertus Bigler, M Erhardt, T Gfeller, G Leuenberger, D Mini, O Mulvaney, Robert Abram, Nerilie Fleet, L Frey, M M |
author_sort |
Schüpbach, S |
title |
Greenland records of aerosol source and atmospheric lifetime changes from the Eemian to the Holocene |
title_short |
Greenland records of aerosol source and atmospheric lifetime changes from the Eemian to the Holocene |
title_full |
Greenland records of aerosol source and atmospheric lifetime changes from the Eemian to the Holocene |
title_fullStr |
Greenland records of aerosol source and atmospheric lifetime changes from the Eemian to the Holocene |
title_full_unstemmed |
Greenland records of aerosol source and atmospheric lifetime changes from the Eemian to the Holocene |
title_sort |
greenland records of aerosol source and atmospheric lifetime changes from the eemian to the holocene |
publisher |
Nature Research |
url |
http://hdl.handle.net/1885/203200 https://doi.org/10.1038/s41467-018-03924-3 https://openresearch-repository.anu.edu.au/bitstream/1885/203200/5/01_Sch%25C3%25BCpbach_Greenland_records_of_aerosol_2018.pdf.jpg |
geographic |
Canada Greenland |
geographic_facet |
Canada Greenland |
genre |
Greenland ice core Iceland North Atlantic Sea ice |
genre_facet |
Greenland ice core Iceland North Atlantic Sea ice |
op_source |
Nature Communications |
op_relation |
2041-1723 http://hdl.handle.net/1885/203200 doi:10.1038/s41467-018-03924-3 https://openresearch-repository.anu.edu.au/bitstream/1885/203200/5/01_Sch%25C3%25BCpbach_Greenland_records_of_aerosol_2018.pdf.jpg |
op_rights |
© The Author(s) 2018 http://creativecommons.org/ licenses/by/4.0/ Creative Commons license |
op_doi |
https://doi.org/10.1038/s41467-018-03924-3 |
container_title |
Nature Communications |
container_volume |
9 |
container_issue |
1 |
_version_ |
1788061703329546240 |