ROBERTO GUARDANI
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Artigo IPEN-doc 20455 Multispectral elastic scanning lidar for industrial flare research: characterizing the electronic subsystem and application2014 - GUERRERO RASCADO, JUAN L.; COSTA, RENATA F. da; BEDOYA, ANDRES E.; GUARDANI, ROBERTO; ALADOS ARBOLEDAS, LUCAS; BASTIDAS, ALVARO E.; LANDULFO, EDUARDOThis work deals with the analysis of the electronic subsystem of a multiwavelength elastic scanning lidar. Several calibration tests are applied to the Cubatão scanning lidar placed at the industrial area of Cubatão in the State of São Paulo (Brazil), in order to improve the knowledge of its performing itself and to design protocols for correcting lidar signal for undesirable instrumental effects. In particular, the trigger delay is assessed by means of zero-bin and bin-shift tests for analog (AN) and photo-counting (PC) signals, respectively. Dark current test is also performed to detect potential range-dependency that could affect lidar products. All tests were performed at different spatial resolutions. These instrumental corrections were applied to a case study of data acquired for characterizing the optical and microphysical properties of particles in an industrial flare. To that aim, a graphical method based on the space defined by the extinction-related Angström exponent versus its spectral curvature is used to derive the contribution of fine aerosol to extinction and the size of the fine aerosols in the industrial flare, therefore revealing features of the processes occurring inside the flame. Our study demonstrates the potential of this new technique for the study and measurement of industrial emissions.Resumo IPEN-doc 19743 Soot extinction measurements in different heights of a petrochemical flare using lidar2013 - COSTA, RENATA F. da; BOURAYOU, RIAD; LANDULFO, EDUARDO; STEFFENS, JULIANA; GUARDANI, ROBERTO; VESELOVSKII, IGORArtigo IPEN-doc 18936 Real-time mapping of an industrial flare using LIDAR2011 - COSTA, RENATA F. da; STEFFENS, JULIANA; LANDULFO, E.; GUARDANI, ROBERTO; NAKAEMA, W.M.; MOREIRA JUNIOR, PAULO F.; LOPES, FABIO J.S.; FERRINI, PATRICIAArtigo IPEN-doc 19630 Stand-off mapping of the soot extinction coefficient in a refinery flare using a 3-wavelength elastic backscatter LIDAR2013 - COSTA, RENATA F. da; BOURAYOU, RIAD; LANDULFO, EDUARDO; GUARDANI, ROBERTO; VASELOVSKII, IGOR; STEFFENS, JULIANAArtigo IPEN-doc 17829 Capability at atmospheric air monitoring in the urban area of Cubatão using Lidar techniques2011 - STEFFENS, JULIANA; GUARDANI, ROBERTO; LANDULFO, EDUARDO; LOPES, FABIO J.S.; MOREIRA JUNIOR, PAULO F.; MOREIRA, ANDREIA