Large perturbations of ammonium and organic acids content in the Summit-Greenland ice core. Fingerprint from forest fires?
Biomass burning is influencing the atmospheric chemistry by emitting large amounts of reactive species such as hydrocarbons, organic acids and nitrogen compounds [Andreae et al., 1988]. Polar ice cores provide a unique record of precipitation whose chemistry reflects the atmospheric composition at t...
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Format: | Article in Journal/Newspaper |
Language: | English |
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American Geophysical Union
1992
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Online Access: | https://boris.unibe.ch/158780/1/legrand92grl.pdf https://boris.unibe.ch/158780/ |
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ftunivbern:oai:boris.unibe.ch:158780 2023-08-20T04:06:51+02:00 Large perturbations of ammonium and organic acids content in the Summit-Greenland ice core. Fingerprint from forest fires? Legrand, M. De Angelis, M. Staffelbach, T. Neftel, A. Stauffer, B. 1992 application/pdf https://boris.unibe.ch/158780/1/legrand92grl.pdf https://boris.unibe.ch/158780/ eng eng American Geophysical Union https://boris.unibe.ch/158780/ info:eu-repo/semantics/openAccess Legrand, M.; De Angelis, M.; Staffelbach, T.; Neftel, A.; Stauffer, B. (1992). Large perturbations of ammonium and organic acids content in the Summit-Greenland ice core. Fingerprint from forest fires? Geophysical Research Letters, 19(5), pp. 473-475. American Geophysical Union 10.1029/91GL03121 <http://dx.doi.org/10.1029/91GL03121> 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 1992 ftunivbern https://doi.org/10.1029/91GL03121 2023-07-31T22:08:19Z Biomass burning is influencing the atmospheric chemistry by emitting large amounts of reactive species such as hydrocarbons, organic acids and nitrogen compounds [Andreae et al., 1988]. Polar ice cores provide a unique record of precipitation whose chemistry reflects the atmospheric composition at the time of deposition. The analysis of such ice samples therefore allows an estimate to be made of the concentration of atmospheric impurities in the past. During the first season of the deep drill operation (GRIP) at Summit, Central Greenland (72° 34' N, 37° 38'W) continuous ammonium (NH4+) measurements were performed between 100 and 600 m depth covering the time period from 330 to 2500 years B.P. The NH4+ concentrations show seasonal variations between 1–20 ng.g−1 with some sporadic high values up to 600 ng.g−1 in narrow layers. The chemical fingerprint points to biomass burning causing the high ammonium peaks. Article in Journal/Newspaper Greenland Greenland ice core GRIP ice core BORIS (Bern Open Repository and Information System, University of Bern) Greenland Geophysical Research Letters 19 5 473 475 |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Legrand, M. De Angelis, M. Staffelbach, T. Neftel, A. Stauffer, B. Large perturbations of ammonium and organic acids content in the Summit-Greenland ice core. Fingerprint from forest fires? |
topic_facet |
530 Physics |
description |
Biomass burning is influencing the atmospheric chemistry by emitting large amounts of reactive species such as hydrocarbons, organic acids and nitrogen compounds [Andreae et al., 1988]. Polar ice cores provide a unique record of precipitation whose chemistry reflects the atmospheric composition at the time of deposition. The analysis of such ice samples therefore allows an estimate to be made of the concentration of atmospheric impurities in the past. During the first season of the deep drill operation (GRIP) at Summit, Central Greenland (72° 34' N, 37° 38'W) continuous ammonium (NH4+) measurements were performed between 100 and 600 m depth covering the time period from 330 to 2500 years B.P. The NH4+ concentrations show seasonal variations between 1–20 ng.g−1 with some sporadic high values up to 600 ng.g−1 in narrow layers. The chemical fingerprint points to biomass burning causing the high ammonium peaks. |
format |
Article in Journal/Newspaper |
author |
Legrand, M. De Angelis, M. Staffelbach, T. Neftel, A. Stauffer, B. |
author_facet |
Legrand, M. De Angelis, M. Staffelbach, T. Neftel, A. Stauffer, B. |
author_sort |
Legrand, M. |
title |
Large perturbations of ammonium and organic acids content in the Summit-Greenland ice core. Fingerprint from forest fires? |
title_short |
Large perturbations of ammonium and organic acids content in the Summit-Greenland ice core. Fingerprint from forest fires? |
title_full |
Large perturbations of ammonium and organic acids content in the Summit-Greenland ice core. Fingerprint from forest fires? |
title_fullStr |
Large perturbations of ammonium and organic acids content in the Summit-Greenland ice core. Fingerprint from forest fires? |
title_full_unstemmed |
Large perturbations of ammonium and organic acids content in the Summit-Greenland ice core. Fingerprint from forest fires? |
title_sort |
large perturbations of ammonium and organic acids content in the summit-greenland ice core. fingerprint from forest fires? |
publisher |
American Geophysical Union |
publishDate |
1992 |
url |
https://boris.unibe.ch/158780/1/legrand92grl.pdf https://boris.unibe.ch/158780/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice core GRIP ice core |
genre_facet |
Greenland Greenland ice core GRIP ice core |
op_source |
Legrand, M.; De Angelis, M.; Staffelbach, T.; Neftel, A.; Stauffer, B. (1992). Large perturbations of ammonium and organic acids content in the Summit-Greenland ice core. Fingerprint from forest fires? Geophysical Research Letters, 19(5), pp. 473-475. American Geophysical Union 10.1029/91GL03121 <http://dx.doi.org/10.1029/91GL03121> |
op_relation |
https://boris.unibe.ch/158780/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/91GL03121 |
container_title |
Geophysical Research Letters |
container_volume |
19 |
container_issue |
5 |
container_start_page |
473 |
op_container_end_page |
475 |
_version_ |
1774718196572487680 |