Investigating a high ozone episode in a rural mountain site

Monteiro, A.; Strunk, A.; Carvalho, Anabela; Tchepel, Oxana; Miranda, Ana Isabel; Borrego, Carlos; Saavedra, Santiago; Rodríguez, Antonio Pérez; Souto, José A.; Casares, J.J.; Friese, E.; Elbern, Hendrik

doi:10.1016/j.envpol.2011.11.008

Cited by 51 publications

(24 citation statements)

References 36 publications

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“…The results show a significant influence of the transport path on ozone concentrations, which is more noticeable when the probability of occurring photochemical pollution phenomena is higher (summer), highlighting the role of photochemical production along long-range transport phenomena, and the input of pollutants into air masses, along their path. Monteiro et al (2012) studied a high ozone episode which occurred in DN in July 2005 concluding that the ozone peaks observed at DN were not produced locally but as a result of transport phenomena. The importance of the long-range transport to the volatile organic compounds (VOC) ozone precursors in this specific rural mountain area is also discussed by Evtyugina et al (2009).…”

Section: Introductionmentioning

confidence: 99%

Investigating ozone episodes in Portugal: a wavelet-based approach

Monteiro

Gouveia

Scotto

et al. 2015

Air Qual Atmos Health

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During the summer season, ozone concentrations regularly exceed the legislation limits in the North of Portugal, namely at Douro Norte monitoring station. The origin of such ozone episodes has been widely reported in several studies although uncertainties regarding its origin still remain. This work intends to investigate how the ozone concentrations measured at the Douro Norte nearest stations, located at west and east directions, are related to those measured at Douro Norte by means of coherence and phase transformations methods. The episodes were selected according to the magnitude of the hourly ozone peaks and the occurrence of exceedances of the threshold value at least in two sites. The results point out that 60 % of the selected episodes highlight significant dependence between Douro Norte station and the other two monitoring sites, with different phase signal and a delay range from 2 to 4 h.

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Section: Introductionmentioning

confidence: 99%

Investigating ozone episodes in Portugal: a wavelet-based approach

Monteiro

Gouveia

Scotto

et al. 2015

Air Qual Atmos Health

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“…The methodology of [3] was adopted, and this investigation was initiated with an air quality and meteorological data time series analysis, followed by a synoptical characterization and simulation of air masses back-trajectories (HYSPLIT model). For PM, the DREAM model was also applied for the simulation of the dispersion and transport of the Saharan desert dust, one of the main sources of dust events frequently recorded over Portugal and Spain [4,5].…”

Section: Methodsmentioning

confidence: 99%

A contribution to air quality management in urban industrialized areas

Lopes¹,

Figueiredo²,

Monteiro³

et al. 2012

Air Pollution XX

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Despite the increasing concern given to air quality in urban and industrial areas in recent years, particular emphasis on regulation, control and reduction of air pollutant emissions is still necessary to fully characterize the chain emissionsair quality -exposure -dose -health effects, for specific sources. In this context, INSPIRAR, a research project started in 2010, was designed to develop a multidisciplinary methodology for air quality, exposure and population health impacts assessment, of industrial pollutants emissions in an industrialized urban area. The Estarreja region was selected as a study case because it has one of the largest chemical industrial complexes in Portugal that has been recently expanded with an increase of its production capacity. This work presents an overview of the first air quality assessment for the region, based on emission inventories and monitoring data. This assessment includes an analysis of trends and the identification and characterization of past air pollution episodes according to the new Air Quality Framework Directive. The contribution of different sources and meteorological conditions to these episodes is investigated. Results show that the most problematic pollutants are ozone and PM10. The advection of contaminated air masses from neighbour regions and adverse weather conditions associated with local emissions, namely industrial activity and road traffic, are the major contributors to air quality degradation in the study region.

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“…These parameters give an estimation of the uncertainty associated with the model results, essential for a correct interpretation and analysis of the results. Figure 6 presents the comparison between the 2012 and 2020 cases, according to the legislation parameters defined by Directive 2008/50/EC, for each of the main atmospheric pollutants, namely for NO2, SO2, PM10 and PM2.5, and also for O3, a secondary pollutant produced apart from NOX and NMVOC precursors, with particular critical levels registered in Portugal (Monteiro et al, 2007;Monteiro et al, 2012). Regarding the NO2 (Figures 6a-6d) the modeling results indicate that there will be no significant changes foreseen in 2020.…”

Section: Air Quality Over Portugal For the Year 2020mentioning

confidence: 99%

“…To ensure timely compliance, interim targets applicable to the same pollutants will apply for 2025. The aim of the envisaged staggered tightening of commitments is to achieve compliance with the amended Gothenburg Protocol by 2020 (UNECE, 2012a;UNECE, 2012b Although complying with the NEC Directive, with NOX, NMVOC, SO2 and NH3 emissions 32%, 6%, 65% and 47% respectively below the ceiling (EEA, 2014), Portugal is one of the European countries facing air quality problems with noncompliance of the legislation, exceeding in 2011 the annual limit value for PM10 and NO2, as well as the target value threshold for O3 (Monteiro et al, 2007;Monteiro et al, 2012;EEA, 2013c).…”

Section: Introductionmentioning

confidence: 99%

Air quality over Portugal in 2020

Monteiro

Ferreira

Ribeiro

et al. 2015

Atmospheric Pollution Research

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This works intends to evaluate the impacts of the national emission ceilings (NEC) reduction scenarios on the air quality in Portugal, verifying the fulfillment of the air quality thresholds for 2020. The air quality numerical modeling system WRF-EURAD was applied to this 2020 future scenario and results were compared to the present situationyear 2012. This modeling system was already evaluated for Portugal domain in previous studies, by comparison with measured air quality data, and showed reasonable skills for all the pollutants. This system was applied over the Continental domain of Portugal, using nesting approach, with a horizontal resolution of 5x5 km 2 , for both scenarios conditions (2012 and 2020) considering the respective emissions data and assuming the 2012 meteorological conditions. The results point towards an improvement of the air quality over Continental Portugal, in particular for particulate matter (in the urban areas of Lisbon and Porto) and SO2 (near specific industrial sources) but do not solve the non-compliance status regarding the O3 threshold value for protection of human health. These results strengthen the importance of including the NEC emission scenarios in the air quality national strategy, but additional mitigation actions need to be designed, with focus on ozone and its precursors, at local and regional scale.

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Investigating a high ozone episode in a rural mountain site

Cited by 51 publications

References 36 publications

Investigating ozone episodes in Portugal: a wavelet-based approach

Investigating ozone episodes in Portugal: a wavelet-based approach

A contribution to air quality management in urban industrialized areas

Air quality over Portugal in 2020

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