Acid episodes in the Allt a'Mharcaidh, Scotland: an investigation based on sub-hourly monitoring data and climatic patterns.
Stream waters in the Allt a'Mharcaidh catchment (Cairngorms, Scotland) have been monitored for flow, conductivity and pH at sub-hourly resolution; and for a range of chemical, biological and physical parameters, less intensively, since the mid-1980s. The Allt a'Mharcaidh stream is subject...
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ftnerc:oai:nora.nerc.ac.uk:2127 2024-06-09T07:48:12+00:00 Acid episodes in the Allt a'Mharcaidh, Scotland: an investigation based on sub-hourly monitoring data and climatic patterns. Bonjean, M. C. Hutchins, M. G. Neal, Colin 2007 text http://nora.nerc.ac.uk/id/eprint/2127/ https://nora.nerc.ac.uk/id/eprint/2127/1/Bonjeanhess-11-340-2007.pdf http://www.hydrol-earth-syst-sci.net/11/340/2007/hess-11-340-2007.html en eng https://nora.nerc.ac.uk/id/eprint/2127/1/Bonjeanhess-11-340-2007.pdf Bonjean, M. C.; Hutchins, M. G. orcid:0000-0003-3764-5331 Neal, Colin. 2007 Acid episodes in the Allt a'Mharcaidh, Scotland: an investigation based on sub-hourly monitoring data and climatic patterns. Hydrology and Earth System Sciences, 11 (1). 340-355. Hydrology Publication - Article PeerReviewed 2007 ftnerc 2024-05-15T08:42:16Z Stream waters in the Allt a'Mharcaidh catchment (Cairngorms, Scotland) have been monitored for flow, conductivity and pH at sub-hourly resolution; and for a range of chemical, biological and physical parameters, less intensively, since the mid-1980s. The Allt a'Mharcaidh stream is subject to acidic events (pH<5.5) triggered by both hydrology and sea-salt inputs from the atmosphere. This paper investigates the drivers of these acidic events using variables derived from sub-hourly monitored data. It also examines the influence of the North Atlantic Oscillation (NAO) on episode severity. Sub-hourly datasets are used to derive multiple regression models expressing stream H+ concentration as a function of the sea-salt conductivity and the peak instantaneous flow rate amongst other explanatory variables. The relationship between sea-salt conductivity and the NAO is significant but hidden due to issues such as time lags and the influence of atmospheric patterns other than the NAO. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Natural Environment Research Council: NERC Open Research Archive |
institution |
Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Hydrology |
spellingShingle |
Hydrology Bonjean, M. C. Hutchins, M. G. Neal, Colin Acid episodes in the Allt a'Mharcaidh, Scotland: an investigation based on sub-hourly monitoring data and climatic patterns. |
topic_facet |
Hydrology |
description |
Stream waters in the Allt a'Mharcaidh catchment (Cairngorms, Scotland) have been monitored for flow, conductivity and pH at sub-hourly resolution; and for a range of chemical, biological and physical parameters, less intensively, since the mid-1980s. The Allt a'Mharcaidh stream is subject to acidic events (pH<5.5) triggered by both hydrology and sea-salt inputs from the atmosphere. This paper investigates the drivers of these acidic events using variables derived from sub-hourly monitored data. It also examines the influence of the North Atlantic Oscillation (NAO) on episode severity. Sub-hourly datasets are used to derive multiple regression models expressing stream H+ concentration as a function of the sea-salt conductivity and the peak instantaneous flow rate amongst other explanatory variables. The relationship between sea-salt conductivity and the NAO is significant but hidden due to issues such as time lags and the influence of atmospheric patterns other than the NAO. |
format |
Article in Journal/Newspaper |
author |
Bonjean, M. C. Hutchins, M. G. Neal, Colin |
author_facet |
Bonjean, M. C. Hutchins, M. G. Neal, Colin |
author_sort |
Bonjean, M. C. |
title |
Acid episodes in the Allt a'Mharcaidh, Scotland: an investigation based on sub-hourly monitoring data and climatic patterns. |
title_short |
Acid episodes in the Allt a'Mharcaidh, Scotland: an investigation based on sub-hourly monitoring data and climatic patterns. |
title_full |
Acid episodes in the Allt a'Mharcaidh, Scotland: an investigation based on sub-hourly monitoring data and climatic patterns. |
title_fullStr |
Acid episodes in the Allt a'Mharcaidh, Scotland: an investigation based on sub-hourly monitoring data and climatic patterns. |
title_full_unstemmed |
Acid episodes in the Allt a'Mharcaidh, Scotland: an investigation based on sub-hourly monitoring data and climatic patterns. |
title_sort |
acid episodes in the allt a'mharcaidh, scotland: an investigation based on sub-hourly monitoring data and climatic patterns. |
publishDate |
2007 |
url |
http://nora.nerc.ac.uk/id/eprint/2127/ https://nora.nerc.ac.uk/id/eprint/2127/1/Bonjeanhess-11-340-2007.pdf http://www.hydrol-earth-syst-sci.net/11/340/2007/hess-11-340-2007.html |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
https://nora.nerc.ac.uk/id/eprint/2127/1/Bonjeanhess-11-340-2007.pdf Bonjean, M. C.; Hutchins, M. G. orcid:0000-0003-3764-5331 Neal, Colin. 2007 Acid episodes in the Allt a'Mharcaidh, Scotland: an investigation based on sub-hourly monitoring data and climatic patterns. Hydrology and Earth System Sciences, 11 (1). 340-355. |
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