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List of Abstracts 207Temuco is a fast growing city in Southern Chile that suffers from heavy air pollution every year in autumnand winter. The main source of inhalable particulate matter (PM10) and other pollutants is residential woodburning (RWB), used for heating the houses and cooking. The government has set up an air qualitymonitoring network. The monitoring network has 2 stations: Las Encinas (LET) and Padre Las Casas (PLC).Here we analyze measurements of PM10, carbon monoxide (CO) and meteorological parameters for theperiod 2003- 2009. Preliminary results show that annual concentrations of PM10 increased in 30% since2003 reaching 92 ug/m3 in 2009 (March-August) at LET. Station PLC does not show a significant trend overthese six years with a annual PM10 average concentration of 55 ug/m3. During 2008 and 2009, the Chileanair quality standard was exceeded 35 days, with 24 hours running average maximum concentrations of 414and 436 ug/m3, respectively. CO mixing ratios are available since 2005 at LET showing a diurnal cycleduring the cold months (Mar-Aug). The average concentrations CO at daytime were 0.7 ppmv. NighttimeCO averages was of 2.5 ppmv. The average CO concentrations from September to February were less than0.8 ppmv. CO and PM10 correlate well during the cold months.P-Observations 2.81 ID:4214 10:30Measurements of Particulate Matter in Seoul and its Upwind Deokjeok Island in the Yellow Sea inSpring 2003Young Sung Ghim 1 , Jae-Gwang Won 2 , Shang-Gyoo Shim 31 Hankuk University of Foreign Studies2 Korea Meteorological Administration3 Korea Institute of Science and TechnologyContact: ysghim@hufs.ac.krMeasurements for particulate matter (TSP, PM10 and PM2.5) were made at Seoul and at Deokjeok Island,which is about 70 km off the west coast of Korean Peninsula, from March to May in 2003. Deokjeok Islandis considered a background site, upwind of Seoul along with prevailing westerlies in the region. Ioniccomposition in PM2.5, and organic and elemental carbons in PM10 were also measured at the same sitesabout two weeks around one or two days of Asian dust (AD) in March and April, respectively, andthroughout May. The effects of AD and long-range transport of air pollutants were investigated bycomparing the variations in pollutants between Seoul and Deokjeok Island. In general, the effects of ADwere not significant during the measurement periods. Measurements indicate that the concentration of coarseparticles (TSP portions larger than PM10) at both sites was higher than that of PM10 and the concentrationof particulate matter in Seoul was higher than that at Deokjeok Island during the AD period. Theseconcentrations are attributed in large part to local emissions of fugitive dust over that of long-range transportof AD. Most pollutants, including sulfate and nitrate, were higher in Seoul than in Deokjeok Island. Unlikenitrate, variations in sulfate concentrations between Seoul and Deokjeok Island showed a high correlation.We understood that sulfate was more affected by long-range transport while local emissions were moreimportant in the determination of nitrate. Many researchers report that the Northern Hemisphere, includingthe Korean Peninsula, was affected by intense Siberian forest fires in May 2003. We also found an increasein K+, particularly during a smog episode in late May. However, continuous accumulation of sulfate foraround two weeks and the high concentration of nitrate, along with low wind speed in the smog episode, areassociated with a contribution of long-range transport from China and local emissions as well as that ofSiberian forest fires.P-Observations 2.82 ID:4494 10:30VERTICAL PROFILES OF PM10 CONCENTRATIONS DERIVED FROM MOBILE LIDARMEASUREMENTS IN THE FRAMEWORK OF THE MEGAPOLI EXPERIMENTiCACGP-IGAC 2010 14 July, 2010