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Ozone Risk Assessment and Mapping in the Alps Based on Data from Passive Samplers

Passive samplers (diffusion tubes with organic reagent, produced by Passam of Switzerland) were used in a sampling campaign for the detection of weekly mean ozone concentrations in 15 sites over a domain of 80 x 40 km on the southern side of the European Alps from May to August 1998. The area is cha...

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Autores principales: Mazzali, Cristina, Angelino, Elisabetta, Gerosa, Giacomo, Ballarin-Denti, Antonio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: TheScientificWorldJOURNAL 2002
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6009542/
https://www.ncbi.nlm.nih.gov/pubmed/12805959
http://dx.doi.org/10.1100/tsw.2002.128
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author Mazzali, Cristina
Angelino, Elisabetta
Gerosa, Giacomo
Ballarin-Denti, Antonio
author_facet Mazzali, Cristina
Angelino, Elisabetta
Gerosa, Giacomo
Ballarin-Denti, Antonio
author_sort Mazzali, Cristina
collection PubMed
description Passive samplers (diffusion tubes with organic reagent, produced by Passam of Switzerland) were used in a sampling campaign for the detection of weekly mean ozone concentrations in 15 sites over a domain of 80 x 40 km on the southern side of the European Alps from May to August 1998. The area is characterized by vast natural terrain of complex topography, with conifer and broadleaf forests. It is difficult to access and monitor air quality there with continuous analysers. By applying geostatistical techniques (ordinary kriging), and correcting the interpolated ozone concentrations according to the altitude of each single grid cell (2 x 2 km), maps of weekly ozone concentrations were produced. The weekly ozone data were used to assess daily and hourly data by means of an iterative procedure based on a functional dependence of ozone concentrations both on altitude and on the time of day. This allowed the estimation of values with an exposure index such as AOT40 (accumulated exposure over the threshold of 40 ppb) in all 800 cells of the domain. This also allowed the mapping of risk assessment related to the effects of ozone on the regional forest vegetation. Results obtained show values that exceed the exposure standards adopted in the Kuopio protocol (1996). Excess exposure values also match values calculated over a wider territorial domain by using hourly data on ozone concentration derived from continuous automatic analysers.
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spelling pubmed-60095422018-07-04 Ozone Risk Assessment and Mapping in the Alps Based on Data from Passive Samplers Mazzali, Cristina Angelino, Elisabetta Gerosa, Giacomo Ballarin-Denti, Antonio ScientificWorldJournal Research Article Passive samplers (diffusion tubes with organic reagent, produced by Passam of Switzerland) were used in a sampling campaign for the detection of weekly mean ozone concentrations in 15 sites over a domain of 80 x 40 km on the southern side of the European Alps from May to August 1998. The area is characterized by vast natural terrain of complex topography, with conifer and broadleaf forests. It is difficult to access and monitor air quality there with continuous analysers. By applying geostatistical techniques (ordinary kriging), and correcting the interpolated ozone concentrations according to the altitude of each single grid cell (2 x 2 km), maps of weekly ozone concentrations were produced. The weekly ozone data were used to assess daily and hourly data by means of an iterative procedure based on a functional dependence of ozone concentrations both on altitude and on the time of day. This allowed the estimation of values with an exposure index such as AOT40 (accumulated exposure over the threshold of 40 ppb) in all 800 cells of the domain. This also allowed the mapping of risk assessment related to the effects of ozone on the regional forest vegetation. Results obtained show values that exceed the exposure standards adopted in the Kuopio protocol (1996). Excess exposure values also match values calculated over a wider territorial domain by using hourly data on ozone concentration derived from continuous automatic analysers. TheScientificWorldJOURNAL 2002-04-17 /pmc/articles/PMC6009542/ /pubmed/12805959 http://dx.doi.org/10.1100/tsw.2002.128 Text en Copyright © 2002 Cristina Mazzali et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Mazzali, Cristina
Angelino, Elisabetta
Gerosa, Giacomo
Ballarin-Denti, Antonio
Ozone Risk Assessment and Mapping in the Alps Based on Data from Passive Samplers
title Ozone Risk Assessment and Mapping in the Alps Based on Data from Passive Samplers
title_full Ozone Risk Assessment and Mapping in the Alps Based on Data from Passive Samplers
title_fullStr Ozone Risk Assessment and Mapping in the Alps Based on Data from Passive Samplers
title_full_unstemmed Ozone Risk Assessment and Mapping in the Alps Based on Data from Passive Samplers
title_short Ozone Risk Assessment and Mapping in the Alps Based on Data from Passive Samplers
title_sort ozone risk assessment and mapping in the alps based on data from passive samplers
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6009542/
https://www.ncbi.nlm.nih.gov/pubmed/12805959
http://dx.doi.org/10.1100/tsw.2002.128
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