ed5cef10-5a6d-4573-9ab3-a4c656b4de78 eng Ev-K2-CNR +39 035 3230511 +39 035 3230551 Via San Bernardino 145 Bergamo BG 24126 Italy metadata@evk2cnr.org http://www.evk2cnr.org/ 2012-03-10T17:44:33 ISO 19115:2003/19139 1.0 Size-resolved aerosol chemical composition over the Italian Peninsula during typical summer and winter conditions 2010-09-21T00:00:00 Atmospheric Environment, v. 44 39 5269-5278 Atmospheric Environment, v. 44, iss. 39, p. 5269-5278. 1352-2310 In the frame of the MIUR-AEROCLOUDS project (Study of Direct and Indirect Aerosol Effects on Climate), night-time and daytime size-segregated aerosol samples were collected concurrently at five different sites (near-city, urban, rural, marine and mountain background sites). The paper reports on the daily evolution of the main aerosol chemical characteristics as a function of particle size in different environments over the Italian Peninsula, spanning from the Po Valley to the south Tyrrhenian coast. Two 4-day intensive observation periods (IOPs) were undertaken in July 2007 and February 2008, under meteorological conditions typical of the summer and winter climate for Italy. In the summer IOP, under stable atmospheric conditions, at the low-altitude continental sites the diurnal evolution of the planetary boundary layer (PBL), induces an atmospheric dilution effect driving the particulate matter (PM) concentrations, while, at the mountain site, it determines the upward motion of polluted air masses from the Po Valley PBL in daytime. The fine fraction was dominated by ammonium salts and carbonaceous matter (water-soluble organic matter, WSOM, and water-insoluble carbonaceous matter, WINCM). High concentrations of ammonium sulphate and WSOM due to enhanced photochemical activity constituted the background aerosol composition over the whole country, whereas, ammonium nitrate and WINCM were more associated to local emissions (e.g. urban site with concentrations peaking in the finest size range due to strong local traffic-related sources of ultrafine particles). During the winter IOP in the Po Valley, the shallow PBL depths and low wind velocity, especially at night, favoured the condensation of semi-volatile species (i.e. organic matter and ammonium nitrate), causing the high fine PM concentration observed at ground level. Elsevier Science Publishing Company nlinfo@sciencedirect.com http://www.elsevier.com/wps/find/homepage.cws_home Stefano Decesari Institute of Atmospheric Sciences and Climate (ISAC) - CNR +39 0516399560 Via Gobetti 101 Bologna BO 40129 Italy S.Decesari@isac.cnr.it www.isac.cnr.it Emanuela Finessi Institute of Atmospheric Sciences and Climate (ISAC) - CNR +39 0516399557 Via Gobetti 101 Bologna BO 40129 Italy e.finessi@isac.cnr.it www.isac.cnr.it Sandro Fuzzi Institute of Atmospheric Sciences and Climate (ISAC) - CNR +39 0516399559 +39 0516399647 Via Gobetti 101 Bologna BO 40129 Italy S.Fuzzi@isac.cnr.it www.isac.cnr.it Gian Paolo Gobbi Institute of Atmospheric Sciences and Climate (ISAC) - CNR +39 0649934343 +39 0620660291 Via Fosso del Cavaliere, 100 Roma ROMA 00133 Italy g.gobbi@isac.cnr.it www.isac.cnr.it Federico Angelini Institute of Atmospheric Sciences and Climate (ISAC) - CNR +39 0649934340 Via Fosso del Cavaliere, 100 Roma ROMA 00133 Italy F.Angelini@isac.cnr.it www.isac.cnr.it Maria Cristina Facchini Institute of Atmospheric Sciences and Climate (ISAC) - CNR +39 0516399563 +39 3472365600 +39 0516399647 Via Gobetti 101 Bologna BO 40129 Italy MC.Facchini@isac.cnr.it www.isac.cnr.it Claudio Carbone Institute of Atmospheric Sciences and Climate (ISAC) - CNR +39 0516399558 Via Gobetti 101 Bologna BO 40129 Italy c.carbone@isac.cnr.it www.isac.cnr.it Matteo Rinaldi Institute of Atmospheric Sciences and Climate (ISAC) - CNR +39 0516399558 Via Gobetti 101 Bologna BO 40129 Italy m.rinaldi@isac.cnr.it www.isac.cnr.it Lara Giulianelli Institute of Atmospheric Sciences and Climate (ISAC) - CNR +39 0516399557 Via Gobetti 101 Bologna BO 40129 Italy l.giulianelli@isac.cnr.it www.isac.cnr.it Angela Marinoni Institute of Atmospheric Sciences and Climate (ISAC) - CNR +39 0516399597 +39 0516399652 Via Gobetti 101 Bologna BO 40129 Italy a.marinoni@isac.cnr.it www.isac.cnr.it Rocco Duchi Institute of Atmospheric Sciences and Climate (ISAC) - CNR +39 0516399584 Via Gobetti 101 Bologna BO 40129 Italy R.Duchi@isac.cnr.it www.isac.cnr.it Mihaela Mircea ENEA Via Martiri di Monte Sole 4 Bologna BO 40129 Italy mihaela.mircea@enea.it www.enea.it Cinzia Perrino CNR - Institute of Atmospheric Pollution Research V. Salaria Km 29,300, Monterotondo ROMA 00016 Italy perrino@iia.mlib.cnr.it http://www.iia.cnr.it/ WWW:LINK-1.0-http--partners Tiziana Sargolini CNR - Institute of Atmospheric Pollution Research +39 0690672638 +39 0690672660 Via Salaria Km 29,300 Monterotondo ROMA 00016 Italy sargolini@iia.cnr.it http://www.iia.cnr.it/index.php?option=com_content&view=article&id=339&Itemid=92&lang=it WWW:LINK-1.0-http--related Massimiliano Vardè University of Rome Sapienza, Department of Public Health Science "G. Sanarelli" +39 3476265075 P.le Aldo Moro 5 Roma ROMA 00185 Italy massimiliano.varde@uniroma1.it www.uniroma1.it WWW:LINK-1.0-http--partners Francesca Sprovieri CNR - Institute of Atmospheric Pollution Research +39 0984493158 c/o: UNICAL-Polifunzionale Rende CS 87036 Italy f.sprovieri@cs.iia.cnr.it http://www.iia.cnr.it/ WWW:LINK-1.0-http--partners https://geoportal.mountaingenius.org/geonetwork/srv/eng/resources.get?uuid=ed5cef10-5a6d-4573-9ab3-a4c656b4de78&fname=mountain_witness__s.png thumbnail png SHARE Size-segregated Aerosol Chemical composition Italy Po valley eng climatologyMeteorologyAtmosphere 6.62397 18.5144 36.6492 47.0946 https://geoportal.mountaingenius.org/webapp/srv/en/resources.get?id=37840&fname=science.pdf&access=private WWW:DOWNLOAD-1.0-http--download science.pdf Full Text(pdf)"Size-resolved aerosol chemical composition over the Italian Peninsula during typical summer and winter conditions." http://www.sciencedirect.com/science/article/pii/S1352231010006618 WWW:LINK-1.0-http--related Full Text(html):"Size-resolved aerosol chemical composition over the Italian Peninsula during typical summer and winter conditions." "Size-resolved aerosol chemical composition over the Italian Peninsula during typical summer and winter conditions". Atmospheric Environment, v. 44, iss. 39, p. 5269-5278. Carbone, C., Decesari, S., Mircea, M., Giulianelli, L., Finessi, E., Rinaldi, M., Fuzzi, S., Marinoni, A., Duchi, R., Perrino, C., Sargolini, T., Vardè, M., Sprovieri, F., Gobbi, G.P., Angelini, F., Facchini, M.C.