Fluoride pollution of atmospheric precipitation and its relationship with air circulation and weather patterns (Wielkopolski National Park, Poland)
| Autor: | Barbara Walna, Ewa Bednorz, Iwona Kurzyca, Leszek Kolendowicz |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Pollution
media_common.quotation_subject Air pollution Management Monitoring Policy and Law medicine.disease_cause Article Troposphere Atmospheric circulation chemistry.chemical_compound Fluorides Environmental Science(all) Air Pollution medicine Precipitation Fluoride Weather General Environmental Science media_common Hydrology Air Pollutants Wielkopolski National Park Back trajectories Atmosphere General Medicine Throughfall Deposition (aerosol physics) chemistry Weather front Environmental science Poland Environmental Monitoring |
| Zdroj: | Environmental Monitoring and Assessment |
| ISSN: | 1573-2959 0167-6369 2010-2011 |
| Popis: | A 2-year study (2010-2011) of fluorides in atmospheric precipitation in the open area and in throughfall in Wielkopolski National Park (west-central Poland) showed their high concentrations, reaching a maximum value of 2 mg/l under the tree crowns. These high values indicate substantial deposition of up to 52 mg/m(2)/year. In 2011, over 51% of open area precipitation was characterized by fluoride concentration higher than 0.10 mg/l, and in throughfall such concentrations were found in more than 86% of events. In 2010, a strong connection was evident between fluoride and acid-forming ions, and in 2011, a correlation between phosphate and nitrite ions was seen. Analysis of available data on F(-) concentrations in the air did not show an unequivocal effect on F(-) concentrations in precipitation. To find reasons for and source areas of high fluoride pollution, the cases of extreme fluoride concentration in rainwater were related to atmospheric circulation and weather patterns. Weather conditions on days of extreme pollution were determined by movement of weather fronts over western Poland, or by small cyclonic centers with meteorological fronts. Macroscale air advection over the sampling site originated in the western quadrant (NW, W, and SW), particularly in the middle layers of the troposphere (2,500-5,000 m a.s.l.). Such directions indicate western Poland and Germany as possible sources of the pollution. At the same time in the lower troposphere, air inflow was frequently from the north, showing short distance transport from local emitters, and from the agglomeration of Poznań. |
| Databáze: | OpenAIRE |
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