Publication
Title
The duration of PM10 concentration in a large metropolitan area
Author
Abstract
Annual ambient PM10 concentration time series recorded between 1991 and 2006 at 13 monitoring stations located within the "critical area" of Milan (Italy), encompassing the city and its metropolitan area, are analysed for the temporal duration of concentration levels. Duration episodes occur when the measured concentration is continuously higher than fixed concentration thresholds. For 20 concentration thresholds, ranging from 10 mu g m(-3) up to 200 mu g m(-3) by a 10 mu g M(-3) step, the total time of exceedance, the number of events of exceedance and the duration of the events of exceedance are evaluated on annual basis. Simple, empirically-derived expressions, formulated in order to describe these features of the observed durations, are presented. Since these formulations are parameterized in terms of the annual average PM10 concentration, they can be used to assess expected exposure to high-concentration levels for future scenarios characterized by lower annual average concentrations. A case-study for Milan urban area is presented, assessing the occurrence of duration episodes at annual PM10 concentration at the compliance level of the PM10 air quality limits, currently not-attained. (C) 2010 Elsevier Ltd. All rights reserved.
Language
English
Source (journal)
Atmospheric environment : an international journal. - Oxford, 1994, currens
Publication
Oxford : 2011
ISSN
1352-2310
Volume/pages
45 :1 (2011) , p. 137-146
ISI
000285675600014
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
External links
Web of Science
Record
Identifier
Creation 05.11.2018
Last edited 08.12.2021