Download Abstracts Here - IGAC Project

List of Abstracts 60P-Chemistry Climate.3 ID:4103 15:35Integrated Modeling System of Environmental Risks in the Metropolitan Area of São Paulo, BrazilLeila Droprinchinski Martins 1 , Maria De Fatima Andrade 2 , Paulo H.N. Saldiva 31 Federal Technology University2 University of Sao Paulo3 University of Sao Paulo Medical SchoolContact: leilamartins@utfpr.edu.brUrban areas concentrated more than 50% of global population and the projection is of increasingparticipation. In Brazil, nowadays, approximately 80% of the population is living in urban areas. Largeurban areas as megacities have a significant contribution to emissions of aerosols, primary gases andgreenhouse gases, playing a great impact on climate and human health. In the Metropolitan Area of SãoPaulo (MASP) pollution events characterized by high concentration of particles and ozone are aggravated bymeteorological conditions that are unfavorable to dispersion, which frequently occur during wintertime.Several scientific studies have shown an increase in hospital admissions associated with these events,especially among children and the elderly, due to respiratory and cardiovascular diseases. In the MASP, badair quality is, mainly due to standards violations by ozone and PM10. Vehicles contribute for more than 90%of primary gases pollutants emissions. The Weather Regional Forecast Chemical model (WRF/chem) hasbeen used to study the regional air quality of São Paulo megacity and their implications in human health.Simulations were performed using the model WRF/Chem for two periods: from September 05 to September10 of 2004 and from October 29, 2006 to November 01, 2006. Temperature, humidity, CO, NOx, SO2,PM10, O3 data were used to validate the model. Also the integrated air quality model was applied toestimate risks of mortality and morbidity due to ozone and PM10 concentration levels. The preliminaryresults indicate that the integrated model is able to represent the behavior of ozone in ground surface andalso in vertical layers, although over estimates the peak of ozone. The results concerning the aerosol alsoindicate that the model can represent the diurnal variability but with less agreement between simulated andobserved values. The risk of mortality and cardio-respiratory diseases for all ages in the MASP due to ozoneconcentrations indicate higher risks outside the downtown of region, because of the transport of itsprecursors. In addition, the risk of mortality associated to PM10 was higher than to ozone mainly forrespiratory diseases up to 2% of increasing.P-Chemistry Climate.4 ID:4417 15:35A study of the impact of land use change in Borneo on atmospheric composition using a global modelNicola Warwick 1 , Glenn Carver 1 , Ben Langford 2 , Pawel Misztal 3 , Kirsti Ashworth 2 , John Pyle 11 University of Cambridge2 Lancaster University3 CEH / University of EdinburghContact: Nicola.Warwick@atm.ch.cam.ac.ukA high resolution version of the Cambridge p-TOMCAT model has been used to analyze results from therecent NERC-funded OP3 measurement campaign in Borneo. By using the chemical transport model at50km resolution, we have begun to understand the impact of emissions and other physical processes onregional chemistry. In particular, we have run several model scenarios looking at the potential impact of landuse change of forest to oil palm in Borneo, and the corresponding change in isoprene emissions, on local andregional atmospheric composition. Oil palm is one of the World’s most rapidly expanding equatorial crops,with Indonesia and Malaysia being the two largest producing countries. Several model emission scenariosare run for the OP3 measurement period, including emissions from global datasets and local fluxmeasurements. Isoprene fluxes observed during OP3 at a forest site were considerably less than fluxes basediCACGP-IGAC 2010 12 July, 2010