High-resolution microparticle profiles at NorthGRIP, Greenland: Case studies of the calcium-dust relationship
A novel flow-through microparticle detector was deployed concurrently with continuous flow analyses of major ions during the North Greenland Icecore Project 2000 field season. the easy-handling detector performs continuous counting and sizing. In this deployment the lower size-detection limit was co...
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ftunivbern:oai:boris.unibe.ch:158775 2023-08-20T03:59:48+02:00 High-resolution microparticle profiles at NorthGRIP, Greenland: Case studies of the calcium-dust relationship Ruth, Urs Wagenbach, Dietmar Bigler, Matthias Steffensen, Jørgen P. Röthlisberger, Regine Miller, Heinz 2002 application/pdf https://boris.unibe.ch/158775/1/ruth02ag.pdf https://boris.unibe.ch/158775/ eng eng International Glaciological Society https://boris.unibe.ch/158775/ info:eu-repo/semantics/restrictedAccess Ruth, Urs; Wagenbach, Dietmar; Bigler, Matthias; Steffensen, Jørgen P.; Röthlisberger, Regine; Miller, Heinz (2002). High-resolution microparticle profiles at NorthGRIP, Greenland: Case studies of the calcium-dust relationship. Annals of glaciology, 35, pp. 237-242. International Glaciological Society 10.3189/172756402781817347 <http://dx.doi.org/10.3189/172756402781817347> 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2002 ftunivbern https://doi.org/10.3189/172756402781817347 2023-07-31T22:08:19Z A novel flow-through microparticle detector was deployed concurrently with continuous flow analyses of major ions during the North Greenland Icecore Project 2000 field season. the easy-handling detector performs continuous counting and sizing. In this deployment the lower size-detection limit was conservatively set to 1.0 μm equivalent spherical particle diameter, and a depth resolution of ≤1cm was achieved for microparticle concentrations. the dust concentration usually followed the Ca2+ variability. Here results are presented from an inspection of the Ca/dust mass ratio in 23 selected intervals, 1.65 m long each, covering different climatic periods including Holocene and Last Glacial Maximum (LGM). A (Ca2+)/(insoluble dust) mass ratio of 0.29 was found for the Holocene and 0.11 for LGM. Changes to the Ca/dust ratio occur on an annual to multi-annual time-scale exhibiting the same pattern, i.e. a lower Ca/dust ratio for higher crustal concentrations. Moreover, the Ca2+/dust ratio may increase significantly during episodic events such as volcanic horizons due to enhanced dissolution of CaCO3. This calls into question the notion of deploying Ca2+ as a quantitative mineral dust reference species and shows the importance of variable source properties or fractionating processes during transport and deposition. Article in Journal/Newspaper Annals of Glaciology Greenland North Greenland BORIS (Bern Open Repository and Information System, University of Bern) Greenland Annals of Glaciology 35 237 242 |
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 Ruth, Urs Wagenbach, Dietmar Bigler, Matthias Steffensen, Jørgen P. Röthlisberger, Regine Miller, Heinz High-resolution microparticle profiles at NorthGRIP, Greenland: Case studies of the calcium-dust relationship |
topic_facet |
530 Physics |
description |
A novel flow-through microparticle detector was deployed concurrently with continuous flow analyses of major ions during the North Greenland Icecore Project 2000 field season. the easy-handling detector performs continuous counting and sizing. In this deployment the lower size-detection limit was conservatively set to 1.0 μm equivalent spherical particle diameter, and a depth resolution of ≤1cm was achieved for microparticle concentrations. the dust concentration usually followed the Ca2+ variability. Here results are presented from an inspection of the Ca/dust mass ratio in 23 selected intervals, 1.65 m long each, covering different climatic periods including Holocene and Last Glacial Maximum (LGM). A (Ca2+)/(insoluble dust) mass ratio of 0.29 was found for the Holocene and 0.11 for LGM. Changes to the Ca/dust ratio occur on an annual to multi-annual time-scale exhibiting the same pattern, i.e. a lower Ca/dust ratio for higher crustal concentrations. Moreover, the Ca2+/dust ratio may increase significantly during episodic events such as volcanic horizons due to enhanced dissolution of CaCO3. This calls into question the notion of deploying Ca2+ as a quantitative mineral dust reference species and shows the importance of variable source properties or fractionating processes during transport and deposition. |
format |
Article in Journal/Newspaper |
author |
Ruth, Urs Wagenbach, Dietmar Bigler, Matthias Steffensen, Jørgen P. Röthlisberger, Regine Miller, Heinz |
author_facet |
Ruth, Urs Wagenbach, Dietmar Bigler, Matthias Steffensen, Jørgen P. Röthlisberger, Regine Miller, Heinz |
author_sort |
Ruth, Urs |
title |
High-resolution microparticle profiles at NorthGRIP, Greenland: Case studies of the calcium-dust relationship |
title_short |
High-resolution microparticle profiles at NorthGRIP, Greenland: Case studies of the calcium-dust relationship |
title_full |
High-resolution microparticle profiles at NorthGRIP, Greenland: Case studies of the calcium-dust relationship |
title_fullStr |
High-resolution microparticle profiles at NorthGRIP, Greenland: Case studies of the calcium-dust relationship |
title_full_unstemmed |
High-resolution microparticle profiles at NorthGRIP, Greenland: Case studies of the calcium-dust relationship |
title_sort |
high-resolution microparticle profiles at northgrip, greenland: case studies of the calcium-dust relationship |
publisher |
International Glaciological Society |
publishDate |
2002 |
url |
https://boris.unibe.ch/158775/1/ruth02ag.pdf https://boris.unibe.ch/158775/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Annals of Glaciology Greenland North Greenland |
genre_facet |
Annals of Glaciology Greenland North Greenland |
op_source |
Ruth, Urs; Wagenbach, Dietmar; Bigler, Matthias; Steffensen, Jørgen P.; Röthlisberger, Regine; Miller, Heinz (2002). High-resolution microparticle profiles at NorthGRIP, Greenland: Case studies of the calcium-dust relationship. Annals of glaciology, 35, pp. 237-242. International Glaciological Society 10.3189/172756402781817347 <http://dx.doi.org/10.3189/172756402781817347> |
op_relation |
https://boris.unibe.ch/158775/ |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.3189/172756402781817347 |
container_title |
Annals of Glaciology |
container_volume |
35 |
container_start_page |
237 |
op_container_end_page |
242 |
_version_ |
1774715750570786816 |