An investigation of base cation deposition in Finland
The deposition of the base cations Na+, K+, Ca2+ and Mg2+ in 1998 was estimated for Finland using measurement data for precipitation and air quality. The highest deposition for all compounds was measured near the southern coast, and it decreased gradually northwards. Deposition of sodium and magnesi...
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2024
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/578188 2024-09-15T17:53:43+00:00 An investigation of base cation deposition in Finland Ruoho-Airola, T. Alaviippola, B. Salminen, K. Varjoranta, R. 2024-06-27T13:44:48Z 83-95 application/pdf http://hdl.handle.net/10138/578188 eng eng Boreal Environment Research Publishing Board Boreal Environment Research 1239-6095 1797-2469 1 8 http://hdl.handle.net/10138/578188 Suomen ympäristökeskus CC BY 4.0 openAccess Artikkeli lehdessä 2024 ftunivhelsihelda 2024-08-21T23:48:04Z The deposition of the base cations Na+, K+, Ca2+ and Mg2+ in 1998 was estimated for Finland using measurement data for precipitation and air quality. The highest deposition for all compounds was measured near the southern coast, and it decreased gradually northwards. Deposition of sodium and magnesium increased again in the far north in the vicinity of the Arctic Ocean. The estimated ranges for the annual deposition of sodium, magnesium, potassium and calcium in Finland were 90–610 mg m–2, 10–80 mg m–2, 30–160 mg m–2 and 30–210 mg m–2, respectively. Similar values have been published for large areas of Sweden and Norway. During the last decade the sum of the base cation concentration in bulk precipitation decreased by 15%–35% in all areas in Finland. The non-sea-salt fraction declined in bulk precipitation approximately as much. An especially large reduction occurred in the southeastern part of Finland, where the wet deposition of base cations decreased almost as much as the wet deposition of sulphur. Article in Journal/Newspaper Arctic Ocean Boreal Environment Research HELDA – University of Helsinki Open Repository |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
description |
The deposition of the base cations Na+, K+, Ca2+ and Mg2+ in 1998 was estimated for Finland using measurement data for precipitation and air quality. The highest deposition for all compounds was measured near the southern coast, and it decreased gradually northwards. Deposition of sodium and magnesium increased again in the far north in the vicinity of the Arctic Ocean. The estimated ranges for the annual deposition of sodium, magnesium, potassium and calcium in Finland were 90–610 mg m–2, 10–80 mg m–2, 30–160 mg m–2 and 30–210 mg m–2, respectively. Similar values have been published for large areas of Sweden and Norway. During the last decade the sum of the base cation concentration in bulk precipitation decreased by 15%–35% in all areas in Finland. The non-sea-salt fraction declined in bulk precipitation approximately as much. An especially large reduction occurred in the southeastern part of Finland, where the wet deposition of base cations decreased almost as much as the wet deposition of sulphur. |
format |
Article in Journal/Newspaper |
author |
Ruoho-Airola, T. Alaviippola, B. Salminen, K. Varjoranta, R. |
spellingShingle |
Ruoho-Airola, T. Alaviippola, B. Salminen, K. Varjoranta, R. An investigation of base cation deposition in Finland |
author_facet |
Ruoho-Airola, T. Alaviippola, B. Salminen, K. Varjoranta, R. |
author_sort |
Ruoho-Airola, T. |
title |
An investigation of base cation deposition in Finland |
title_short |
An investigation of base cation deposition in Finland |
title_full |
An investigation of base cation deposition in Finland |
title_fullStr |
An investigation of base cation deposition in Finland |
title_full_unstemmed |
An investigation of base cation deposition in Finland |
title_sort |
investigation of base cation deposition in finland |
publisher |
Boreal Environment Research Publishing Board |
publishDate |
2024 |
url |
http://hdl.handle.net/10138/578188 |
genre |
Arctic Ocean Boreal Environment Research |
genre_facet |
Arctic Ocean Boreal Environment Research |
op_relation |
Boreal Environment Research 1239-6095 1797-2469 1 8 http://hdl.handle.net/10138/578188 Suomen ympäristökeskus |
op_rights |
CC BY 4.0 openAccess |
_version_ |
1810429717316108288 |