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dc.contributor.author안강호-
dc.date.accessioned2018-05-30T04:40:27Z-
dc.date.available2018-05-30T04:40:27Z-
dc.date.issued2017-02-
dc.identifier.citationATMOSPHERIC CHEMISTRY AND PHYSICS, v. 17, No. 4, Page. 2817-2838en_US
dc.identifier.issn1680-7316-
dc.identifier.issn1680-7324-
dc.identifier.urihttps://www.atmos-chem-phys.net/17/2817/2017/acp-17-2817-2017.html-
dc.identifier.urihttp://repository.hanyang.ac.kr/handle/20.500.11754/71693-
dc.description.abstractGround-level and vertical measurements (performed using tethered and non-tethered balloons), coupled with modelling, of ozone (O-3), other gaseous pollutants (NO, NO2, CO, SO2) and aerosols were carried out in the plains (Vic Plain) and valleys of the northern region of the Barcelona metropolitan area (BMA) in July 2015, an area typically recording the highest O-3 episodes in Spain. Our results suggest that these very high O-3 episodes were originated by three main contributions: (i) the surface fumigation from high O-3 reservoir layers located at 1500-3000m a.g.l. (according to modelling and non-tethered balloon measurements), and originated during the previous day(s) injections of polluted air masses at high altitude; (ii) local/regional photochemical production and transport (at lower heights) from the BMA and the surrounding coastal settlements, into the inland valleys; and (iii) external (to the study area) contributions of both O-3 and precursors. These processes gave rise to maximal O-3 levels in the inland plains and valleys northwards from the BMA when compared to the higher mountain sites. Thus, a maximum O-3 concentration was observed within the lower tropospheric layer, characterised by an upward increase of O-3 and black carbon (BC) up to around 100-200m a.g.l. (reaching up to 300 mu g m(-3) of O-3 as a 10 s average), followed by a decrease of both pollutants at higher altitudes, where BC and O-3 concentrations alternate in layers with parallel variations, probably as a consequence of the atmospheric transport from the BMA and the return flows (to the sea) of strata injected at certain heights the previous day(s). At the highest altitudes reached in this study with the tethered balloons (900-1000m a.g.l.) during the campaign, BC and O-3 were often anti-correlated or unrelated, possibly due to a prevailing regional or even hemispheric contribution of O-3 at those altitudes. In the central hours of the days a homogeneous O-3 distribution was evidenced for the lowest 1 km of the atmosphere, although probably important variations could be expected at higher levels, where the high O-3 return strata are injected according to the modelling results and non-tethered balloon data. Relatively low concentrations of ultrafine particles (UFPs) were found during the study, and nucleation episodes were only detected in the boundary layer. Two types of O-3 episodes were identified: type A with major exceedances of the O-3 information threshold (180 mu g m(-3) on an hourly basis) caused by a clear daily concatenation of local/regional production with accumulation (at upper levels), fumigation and direct transport from the BMA (closed circulation); and type B with regional O-3 production without major recirculation (or fumigation) of the polluted BMA/regional air masses (open circulation), and relatively lower O-3 levels, but still exceeding the 8 h averaged health target. To implement potential O-3 control and abatement strategies two major key tasks are proposed: (i) meteorological forecasting, from June to August, to predict recirculation episodes so that NOx and VOC abatement measures can be applied before these episodes start; (ii) sensitivity analysis with high-resolution modelling to evaluate the effectiveness of these potential abatement measures of precursors for O-3 reduction.en_US
dc.description.sponsorshipThe present work was supported by the Spanish Ministry of Economy and Competitiveness and FEDER funds under the project HOUSE (CGL2016-78594-R), by the Generalitat de Catalunya (AGAUR 2015 SGR33 and the DGQA). Part of this research was supported by the Korean Ministry of the Environment through "The Eco-Innovation project". The participation of University of Marseille and University of Birmingham was partially supported by two TNA actions projects carried out under the ACTRIS2 project (grant agreement No. 654109) financed by the European Union's Horizon 2020 research and innovation program. The support of the CUD of Zaragoza (project CUD 2013-18) is also acknowledged. We are very thankful to the Generalitat de Catalunya for supplying the air quality data from the XVPCA stations, to METEOCAT (the Meteorological Office of Catalonia) for providing meteorological data and to the IES J. Callis and the Meteorological Station from Vica (especially to Manel Dot) for allowing the performance of the vertical profiles and mobile unit measurements, respectively. In memoriam of Andrei Lyasota.en_US
dc.language.isoen_USen_US
dc.publisherCOPERNICUS GESELLSCHAFT MBHen_US
dc.subjectWESTERN MEDITERRANEAN BASINen_US
dc.subjectPHOTOCHEMICAL AIR-POLLUTIONen_US
dc.subjectIBERIAN PENINSULAen_US
dc.subjectATMOSPHERIC PROCESSESen_US
dc.subjectSOURCE APPORTIONMENTen_US
dc.subjectBIOGENIC EMISSIONSen_US
dc.subjectTROPOSPHERIC OZONEen_US
dc.subjectRESEARCH-PROJECTSen_US
dc.subjectCLIMATE-CHANGEen_US
dc.subjectEASTERN SPAINen_US
dc.titlePhenomenology of high-ozone episodes in NE Spainen_US
dc.typeArticleen_US
dc.relation.no4-
dc.relation.volume17-
dc.identifier.doi10.5194/acp-17-2817-2017-
dc.relation.page2817-2838-
dc.relation.journalATMOSPHERIC CHEMISTRY AND PHYSICS-
dc.contributor.googleauthorQuerol, Xavier-
dc.contributor.googleauthorGangoiti, Gotzon-
dc.contributor.googleauthorMantilla, Enrique-
dc.contributor.googleauthorAlastuey, Andres-
dc.contributor.googleauthorCruz Minguillon, Maria-
dc.contributor.googleauthorAmato, Fulvio-
dc.contributor.googleauthorReche, Cristina-
dc.contributor.googleauthorViana, Mar-
dc.contributor.googleauthorMoreno, Teresa-
dc.contributor.googleauthorAhn, Kang-Ho-
dc.relation.code2017001104-
dc.sector.campusE-
dc.sector.daehakCOLLEGE OF ENGINEERING SCIENCES[E]-
dc.sector.departmentDEPARTMENT OF MECHANICAL ENGINEERING-
dc.identifier.pidkhahn-
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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