A study on the atmospheric concentrations of primary and secondary air pollutants in the Athens basin performed by DOAS and DIAL measuring techniques

Kalabokas, PD; Papayannis, AD; Tsaknakis, G; Ziomas, I

dc.contributor.author	Kalabokas, PD	en
dc.contributor.author	Papayannis, AD	en
dc.contributor.author	Tsaknakis, G	en
dc.contributor.author	Ziomas, I	en
dc.date.accessioned	2014-03-01T02:07:33Z
dc.date.available	2014-03-01T02:07:33Z
dc.date.issued	2012	en
dc.identifier.issn	00489697	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29571
dc.subject	Athens	en
dc.subject	DIAL	en
dc.subject	DOAS	en
dc.subject	Greece	en
dc.subject	Ozone	en
dc.subject.other	Air mass	en
dc.subject.other	Athens	en
dc.subject.other	Atmospheric concentration	en
dc.subject.other	DIAL	en
dc.subject.other	Differential absorption lidars	en
dc.subject.other	Differential optical absorption spectroscopy	en
dc.subject.other	DOAS	en
dc.subject.other	European council	en
dc.subject.other	European union	en
dc.subject.other	Free troposphere	en
dc.subject.other	Greece	en
dc.subject.other	Human health	en
dc.subject.other	Mean values	en
dc.subject.other	Measuring technique	en
dc.subject.other	Ozone measurements	en
dc.subject.other	Planetary boundary layers	en
dc.subject.other	Secondary air	en
dc.subject.other	Summer months	en
dc.subject.other	Surface ozone	en
dc.subject.other	Technical universities	en
dc.subject.other	Vertical ozone profile	en
dc.subject.other	Air quality	en
dc.subject.other	Atmospheric boundary layer	en
dc.subject.other	Atmospheric movements	en
dc.subject.other	Atmospherics	en
dc.subject.other	Nitrogen oxides	en
dc.subject.other	Optical radar	en
dc.subject.other	Ozone	en
dc.subject.other	Ozone layer	en
dc.subject.other	Pollution	en
dc.subject.other	Sulfur dioxide	en
dc.subject.other	Air quality standards	en
dc.subject.other	nitrogen dioxide	en
dc.subject.other	ozone	en
dc.subject.other	sulfur dioxide	en
dc.subject.other	air quality	en
dc.subject.other	atmospheric chemistry	en
dc.subject.other	atmospheric pollution	en
dc.subject.other	concentration (composition)	en
dc.subject.other	nitrogen dioxide	en
dc.subject.other	ozone	en
dc.subject.other	qualitative analysis	en
dc.subject.other	sulfur dioxide	en
dc.subject.other	troposphere	en
dc.subject.other	air pollutant	en
dc.subject.other	air quality standard	en
dc.subject.other	airflow	en
dc.subject.other	article	en
dc.subject.other	atmospheric dispersion	en
dc.subject.other	boundary layer	en
dc.subject.other	controlled study	en
dc.subject.other	differential absorption lidar vertical ozone measurement	en
dc.subject.other	differential optical absorption spectroscopy	en
dc.subject.other	European Union	en
dc.subject.other	Greece	en
dc.subject.other	measurement	en
dc.subject.other	meteorology	en
dc.subject.other	ozone layer	en
dc.subject.other	priority journal	en
dc.subject.other	rural area	en
dc.subject.other	spectroscopy	en
dc.subject.other	summer	en
dc.subject.other	troposphere	en
dc.subject.other	winter	en
dc.subject.other	Athens [Attica]	en
dc.subject.other	Attica	en
dc.subject.other	Greece	en
dc.title	A study on the atmospheric concentrations of primary and secondary air pollutants in the Athens basin performed by DOAS and DIAL measuring techniques	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.scitotenv.2011.11.024	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.scitotenv.2011.11.024	en
heal.publicationDate	2012	en
heal.abstract	In this work an analysis of continuous Differential Optical Absorption Spectroscopy (DOAS) measurements of primary and secondary air pollutants (SO2, NO2 and O3) in the Athens basin is performed combined with Differential Absorption Lidar (DIAL) vertical ozone measurements obtained inside the Planetary Boundary Layer (PBL) and the lower free troposphere. The measurements took place during the period May 2005-February 2007, at the National Technical University of Athens Campus (200m above sea level (asl.), 37.96°N, 23.78°E). The SO2 and NO2 DOAS measurements showed maximum 1-hour mean values (around 20μg/m3 and 74μg/m3, respectively) in winter and did not exceed the current European Union (EU) air quality standards (European Council Directive 2008/50/EC), in contrast to ozone, which shows its maximum (around 128μg/m3) in summer and frequently exceeds the EU standard for human health protection (120μg/m3). If the measurements are classified according to the two most frequent flow-patterns of the air masses in the Athens basin (northern-southern circulation), it is observed that in general the atmospheric concentrations of all measured pollutants including ozone are higher when the southern circulation occurs, in comparison to the corresponding values under the northern circulation. The vertical ozone profiles obtained by DIAL were also higher under the southern circulation. During the summer months a mean difference (between the southern-northern circulations) of the order of 15-20μg/m3, maximized at the 0.9-1.1km and 1.7-1.8km height, was observed within the PBL. It was also observed that the summer surface ozone levels remained relatively high (around 80-110μg/m3) even during strong northerly winds, verifying the high levels of rural surface ozone in the surrounding area reported by previous studies. © 2011 Elsevier B.V.	en
heal.journalName	Science of the Total Environment	en
dc.identifier.doi	10.1016/j.scitotenv.2011.11.024	en
dc.identifier.volume	414	en
dc.identifier.spage	556	en
dc.identifier.epage	563	en