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Resumo IPEN-doc 23286 First Urban Boundary layer determination from Lidar measurements at Natal (Brazil)2016 - SANTOS, RENATA; CAMILO, DANIEL; ARAUJO, MARCOS P.; GUEDES, ANDERSON; HOELZEMANN, JUDITH; HENRIQUE, JOSE; LOPES, FABIO; LANDULFO, EDUARDO; MONTILLA-ROSERO, ELENAThe planetary boundary layer (PBL) height is a crucial parameter for air quality monitoring or forecasting and is essential for the interpretation of atmospheric constituents. A first determination of PBL height has been done through the identification of the minimum in the vertical gradients of Lidar profiles measured with a multiwavelength polarized Lidar system (named DUSTER) developed by the Laser Environmental Application Laboratory (LEAL) at the Nuclear and Energy Research Institute (IPEN, São Paulo, Brazil) and installed in February, 2016 at the Department of Atmospheric and Climate Sciences of the Federal University of Rio Grande do Norte (UFRN) in the city of Natal, Rio Grande do Norte, in the Brazilian Northeast (5°50’29 S, 35°11’57 W, sea level). In this work, the first information about daily evolution of urban PBL height in Natal is presented.Resumo IPEN-doc 23278 Tropospheric vertical profiles of aerosol optical parameter at Brazilian Northeastern: preliminary results2016 - MONTILLA-ROSERO, ELENA; LOPES, FABIO; GUEDES, ANDERSON; HOELZEMANN, JUDITH; HENRIQUE, JOSE; GERRERO-RASCADO, JUAN L.; ALADOS, LUCAS; LANDULFO, EDUARDOFor understanding the dust transport processes and retrieving essential data for continuing validation and improvement of satellite products as for evaluating and improving aerosol and dust simulations with global and regional models as well, a multi-wavelength elastic depolarizing LIDAR system, developed by the Center of lasers and applications at IPEN, has been collocated with a sunphotometer CIMEL at Natal, northeastern city of Brazil. Through vertical profiling of dust optical and microphysical properties i.e, backscatter and extinction coefficients and particle depolarization ratio at 532 nm, the LIDAR system is planned to be a crucial point for progress on the assessment of aerosol radiative impact and aerosol-cloud interaction research. In this work, the first measurements carried out with the depolarization channels during February, March and April 2016, and the retrieved vertical profiles of aerosol backscatter coefficient are presented. Three-dimensional air mass back trajectory analysis was also conducted to determine the source regions of aerosols observed during this study.Artigo IPEN-doc 22881 Identification and monitoring of atmospheric particles by multiwavelength Radar Laser in South America2016 - MONTILLA-ROSERO, E.; SILVA, A.; JIMENEZ, C.; GUEDES, A.; HOELZEMAN, J.; LOPES, F.; LANDULFO, E.; SAAVEDRA, C.First monitoring LIDAR measurements of tropospheric aerosols in two different places of South America are reported. Characteristics optical parameters were retrieved using inversion algorithms for two coastal cities in the Pacific and Atlantic Oceans.Artigo IPEN-doc 20290 The first ALINE measurements and intercomparison exercise on lidas inversion algorithms2014 - BARBOSA, H.M.J.; LOPES, F.J.S.; SILVA, A.; NISPERUZA, D.; BARJA, B.; RISTORI, P.; GOUVEIA, D.A.; JIMENEZ, C.; MONTILLA, E.; MARIANO, G.L.; LANDULFO, E.; BASTIDAS, A.; QUEL, E.J.