HR: 0800h
AN: A21A-0827    [Abstracts]
TI: Correlation Between Methyl Iodide and Ozone Concentrations Recorded at the Mt. Cimone Station (2165 m asl) in the Northern Apennines (Italy)
AU: * Maione, M
EM: michela@uniurb.it
AF: University of Urbino, Institute of Chemical Sciences, Piazza Rinascimento 6, Urbino, 61029 Italy
AU: Arduini, J
EM: j.arduini@uniurb.it
AF: University of Urbino, Institute of Chemical Sciences, Piazza Rinascimento 6, Urbino, 61029 Italy
AU: Bonasoni, P
EM: p.bonasoni@isac.cnr.it
AF: National Research Council, Institute of Atmospheric Sciences and Climate, Via Gobetti 101, Bologna, 40129 Italy
AU: Cristofanelli, P
EM: p.cristofanelli@isac.cnr.it
AF: National Research Council, Institute of Atmospheric Sciences and Climate, Via Gobetti 101, Bologna, 40129 Italy
AU: Calzolari, F
EM: f.calzolari@isac.cnr.it
AF: National Research Council, Institute of Atmospheric Sciences and Climate, Via Gobetti 101, Bologna, 40129 Italy
AB: Many chemical species and atmospheric transport processes are involved in establishing tropospheric ozone budget. Particularly, Iodine compounds can perturb the oxidative capacity of the troposphere, influencing the ozone concentration. In this work we present a study concerning correlations between ozone and methyl iodide concentrations recorded at the Mt. Cimone Station (2165 m a.s.l., Italian Northern Apennines). methyl iodide is continuously (one sample every third hour) measured by GC-MS at the Station since July 2003 within the framework of EU-project SOGE (System for Observation of halogenated Greenhouse gases in Europe), together with a number of halogenated hydrocarbons ozone O3 in high mountain area is characteristic of atmospheric background conditions and can be influenced by natural or anthropic contributions. The continuous observations of ozone and methyl iodide carried out at Mt. Cimone, allowed us to better evaluate their variability regarding to different dynamic conditions and transport processes (i.e. Saharan dust transport, marine air mass advection, polluted air mass advection, stratosphere to troposphere exchange. Air mass three-dimensional back trajectories as well as meteorological parameter and aerosol concentration and size distribution analysis have been used to explain the different behaviour of ozone and methyl iodide revealed at Mt. Cimone.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005