FABIO JULIANO DA SILVA LOPES

FABIO JULIANO DA SILVA LOPES

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Lidar measurements of troposheric aerosol and water vapor profiles during the winter season compaigns over the metropolitan area of São Paulo - Brazil
2014 - LOPES, FABIO J.S.; MOREIRA, GREGORI A.; RODRIGUES, PATRICIA F.; GUERRERO RASCADO, JUAN L.; ANDRADE, MARIA F.; LANDULFO, EDUARDO
The so-called Metropolitan Area of S˜ao Paulo, one of the largest megacities in the world, faces several problems related to the air quality due the high concentrations of aerosols produced either by local sources or by long-range transporting. Concerned with the elevated concentrations of aerosol and their impact in the air quality and the climate changes inside MASP, a measurement campaign were conducted during the South hemisphere winter of 2012, when the low temperatures and the low level of precipitation contribute to the poor dispersion of aerosols. A Raman Lidar system and air quality monitoring stations from University of S˜ao Paulo and Environment Agency of S˜ao Paulo State (CETESB) were employed in order to monitor the increasing of aerosol load in the atmosphere. Satellite data, in synergy with HYSPLIT air masses backward trajectories, were applied to track the aerosol from the long-range distanced regions to Metropolitan Area of S˜ao Paulo. In the beginning of September 2012, MASP experienced episodes of high air pollution concentration, reaching Aerosol Optical Depth (AOD) values up to 0.89 at 550 nm and particulate matter concentration up to 293 µg/cm3 . Particle lidar ratio values of 60 to 70 sr retrieved by a Raman Lidar system at 532 nm provided information of the aerosol type, helping to determine the influence of biomass burning advected from large range distance to megacities such as S˜ao Paulo.
ALINE network status
2013 - LANDULFO, EDUARDO; LOPES, FABIO J. da S.; NAKAEMA, WALTER M.; LARROZA, ELIANE G.; ARAUJO, FELIPE V.; RODRIGUES, PATRICIA F.; RISTORI, PABLO; OTERO, LIDIA; PALLOTTA, JUAN; PAWELKO, EZEQUIEL; CHOUZA, FERNANDO; QUEL, EDUARDO; FORNO, R.; SANCHEZ, MARIA F.; CALDERON, FERNANDO; BARBOSA, HENRIQUE; GOUVEIA, DIEGO A.; ARTAXO, PAULO; MONTILLA, E.; SILVA, ANTONIETA; JIMENEZ, C.; SAAVEDRA, CALOS; HERNANDEZ, ROLANDO; ARREDONDO, RENE E.; GONZALEZ, BORIS B.; BRUNETA, CARLOS E.H.; SANCHEZ, JUAN C.A.; MARRERO, JUAN C.A.; GUSTIN, ALVARO B.; TOLEDO, DANIEL N.; BEDOYA, ANDRES; ALEGRIA, DAIRO; MUNERA, MAURICIO; WHITEMAN, DAVID
Initial analysis from a Lidar observation compaign of sugar cane fires in the Central and Western portion of the São Paulo state - Brazil
2011 - LOPES, FABIO J.S.; HELD, GERHARD; NAKAEMA, WALTER M.; RODRIGUES, PATRICIA F.; BASSAN, JOSE MARCIO; LANDULFO, EDUARDO
LIDAR observation campaign of sugar cane fires and industrial emissions in the state of São Paulo, Brazil
2010 - LANDULFO, E.; JORGE, MARIA P.M.P.; HELD, GERHARD; GUARDANI, ROBERTO; STEFFENS, JULIANA; PINTO, SERGIO dos A.F.; ANDRE, IARA R.; GARCIA, GILBERTO; LOPES, F.J.S.; MARIANO, GLAUBER L.; COSTA, RENATA F. da; RODRIGUES, PATRICIA F.
Brazil has an important role in the biomass burning, with the detection of approximately 100,000 burning spots in a single year (2007). Most of these spots occur in the southern part of the Amazon basin during the dry season (from August to november) and these emissions reach the southeast of the country, a highly populated region and with serious urban air pollution problems. With the growing demand on biofuels, sugarcane is considerably expanding in the state of S˜ao Paulo, being a strong contributor to the bad air quality in this region. In the state of S˜ao Paulo, the main land use are pasture and sugarcane crop, that covers around 50% and 10% of the total area, respectively. Despite the aerosol from sugarcane burning having reduced atmospheric residence time, from a few days to some weeks, they might get together with those aerosol which spread over long distances (hundreds to thousands of kilometers). In the period of June through February 2010 a LIDAR observation campaign was carried in the state of S˜ao Paulo, Brazil, in order to observe and characterize optically the aerosols from two distinct sources, namely, sugar cane biomass burning and industrial emissions. For this purpose 2 LIDAR systems were available, one mobile and the other placed in a laboratory, both working in the visible (532 nm) and additionally the mobile system had a Raman channel available (607 nm). Also this campaign counted with a SODAR, a meteorological RADAR specially set up to detect aerosol “echoes” and gas-particle analyzers. To guarantee a good regional coverage 4 distinct sites were available to deploy the instruments, 2 in the near field of biomass burning activities (Rio Claro and Bauru), one for industrial emissions (Cubat˜ao) and others from urban sources (S˜ao Paulo). The whole campaign provide the equivalent of 30 days of measurements which allowed us to get aerosol optical properties such as backscattering/extinction coefficients, scatter and LIDAR ratios, those were used to correlate with air quality and meteorological indicators and quantities. In this paper we should focus on the preliminary results of the Raman LIDAR system and its derived aerosol optical quantities.