Continental biogenic species in the Greenland ice core project ice core: Tracing back the biomass history of the North American continent
Ammonium, nitrate, and organic acid records from the Greenland Ice Core Project deep ice core are discussed. All species have a continental biogenic source that is situated predominantly on the North American continent for species deposited in Summit, central Greenland. The record therefore can be u...
Published in: | Journal of Geophysical Research: Oceans |
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Format: | Article in Journal/Newspaper |
Language: | English |
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American Geophysical Union
1997
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Online Access: | https://boris.unibe.ch/158725/1/fuhrer97jgr.pdf https://boris.unibe.ch/158725/ |
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ftunivbern:oai:boris.unibe.ch:158725 2023-08-20T04:06:50+02:00 Continental biogenic species in the Greenland ice core project ice core: Tracing back the biomass history of the North American continent Fuhrer, Katrin Legrand, Michel 1997 application/pdf https://boris.unibe.ch/158725/1/fuhrer97jgr.pdf https://boris.unibe.ch/158725/ eng eng American Geophysical Union https://boris.unibe.ch/158725/ info:eu-repo/semantics/openAccess Fuhrer, Katrin; Legrand, Michel (1997). Continental biogenic species in the Greenland ice core project ice core: Tracing back the biomass history of the North American continent. Journal of Geophysical Research: Oceans, 102(C12), pp. 26735-26745. American Geophysical Union 10.1029/97JC01299 <http://dx.doi.org/10.1029/97JC01299> 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 1997 ftunivbern https://doi.org/10.1029/97JC01299 2023-07-31T22:08:19Z Ammonium, nitrate, and organic acid records from the Greenland Ice Core Project deep ice core are discussed. All species have a continental biogenic source that is situated predominantly on the North American continent for species deposited in Summit, central Greenland. The record therefore can be used to trace back the biomass history of the North American continent. Difficulty in the interpretation of these records arises from their unknown transfer behavior in a more alkaline atmosphere, which characterizes glacial time periods compared to interglacial stadials. This may have implications not only for weak acids such as formate and acetate, but also possibly for the transport and incorporation of HNO3 into aerosols, whereas ammonium is probably not affected by the alkalinity change of the atmosphere. Our approach is to compare samples with similar H+ concentrations throughout the record. From the records we infer several significant fluctuations in the extent of the Laurentide Ice Sheet during the last glaciation. We find evidence against the occurrence of an extensive Younger Dryas event in North America. Article in Journal/Newspaper Greenland Greenland ice core Greenland Ice core Project ice core Ice Sheet BORIS (Bern Open Repository and Information System, University of Bern) Greenland Journal of Geophysical Research: Oceans 102 C12 26735 26745 |
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Open Polar |
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BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Fuhrer, Katrin Legrand, Michel Continental biogenic species in the Greenland ice core project ice core: Tracing back the biomass history of the North American continent |
topic_facet |
530 Physics |
description |
Ammonium, nitrate, and organic acid records from the Greenland Ice Core Project deep ice core are discussed. All species have a continental biogenic source that is situated predominantly on the North American continent for species deposited in Summit, central Greenland. The record therefore can be used to trace back the biomass history of the North American continent. Difficulty in the interpretation of these records arises from their unknown transfer behavior in a more alkaline atmosphere, which characterizes glacial time periods compared to interglacial stadials. This may have implications not only for weak acids such as formate and acetate, but also possibly for the transport and incorporation of HNO3 into aerosols, whereas ammonium is probably not affected by the alkalinity change of the atmosphere. Our approach is to compare samples with similar H+ concentrations throughout the record. From the records we infer several significant fluctuations in the extent of the Laurentide Ice Sheet during the last glaciation. We find evidence against the occurrence of an extensive Younger Dryas event in North America. |
format |
Article in Journal/Newspaper |
author |
Fuhrer, Katrin Legrand, Michel |
author_facet |
Fuhrer, Katrin Legrand, Michel |
author_sort |
Fuhrer, Katrin |
title |
Continental biogenic species in the Greenland ice core project ice core: Tracing back the biomass history of the North American continent |
title_short |
Continental biogenic species in the Greenland ice core project ice core: Tracing back the biomass history of the North American continent |
title_full |
Continental biogenic species in the Greenland ice core project ice core: Tracing back the biomass history of the North American continent |
title_fullStr |
Continental biogenic species in the Greenland ice core project ice core: Tracing back the biomass history of the North American continent |
title_full_unstemmed |
Continental biogenic species in the Greenland ice core project ice core: Tracing back the biomass history of the North American continent |
title_sort |
continental biogenic species in the greenland ice core project ice core: tracing back the biomass history of the north american continent |
publisher |
American Geophysical Union |
publishDate |
1997 |
url |
https://boris.unibe.ch/158725/1/fuhrer97jgr.pdf https://boris.unibe.ch/158725/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice core Greenland Ice core Project ice core Ice Sheet |
genre_facet |
Greenland Greenland ice core Greenland Ice core Project ice core Ice Sheet |
op_source |
Fuhrer, Katrin; Legrand, Michel (1997). Continental biogenic species in the Greenland ice core project ice core: Tracing back the biomass history of the North American continent. Journal of Geophysical Research: Oceans, 102(C12), pp. 26735-26745. American Geophysical Union 10.1029/97JC01299 <http://dx.doi.org/10.1029/97JC01299> |
op_relation |
https://boris.unibe.ch/158725/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/97JC01299 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
102 |
container_issue |
C12 |
container_start_page |
26735 |
op_container_end_page |
26745 |
_version_ |
1774718177475821568 |