FABIO JULIANO DA SILVA LOPES

FABIO JULIANO DA SILVA LOPES

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Assessing spatial variation of PBL height and aerosol layer aloft in São Paulo Megacity using simultaneously two lidar during winter 2019
2022 - MOREIRA, GREGORI de A.; OLIVEIRA, AMAURI P. de; CODATO, GEORGIA; SANCHEZ, MACIEL P.; TITO, JANET V.; SILVA, LEONARDO A.H. e; SILVEIRA, LUCAS C. da; SILVA, JONATAN J. da; LOPES, FABIO J. da S.; LANDULFO, EDUARDO
This work presents the use of two elastic lidar systems to assess the horizontal variation of the PBL height (PBLH) and aerosol layer aloft in the São Paulo Megacity. These two lidars performed simultaneous measurements 10.7 km apart in a highly urbanized and relatively flat area of São Paulo for two winter months of 2019. The results showed that the PBLH differences display diurnal variation that depends on the PBL during daytime growth phases. Cloud and sea breeze effects control most of PBLH variation. In the absence of cloud and sea breeze, the maximum difference (~300 m) occurs in the rapid development stage and is due to topographic effects. When the PBL approaches its maximum daily value, it tends to level off with respect to the topography. In addition, it was presented a method that combines elastic lidar (to detect an aerosol layer) and satellite data (to classify such a layer from Aerosol Optical Depth (AOD) and Aerosol Index (AI) information) for the detection of biomass burning events. This methodology demonstrated that the variations caused by Biomass Burning in AOD and AI enable both the detection of aerosol plumes originating from biomass burning and the identification of their origin.
Influence of a biomass-burning event in PM2.5 concentration and air quality
2021 - MOREIRA, GREGORI de A.; ANDRADE, IZABEL da S.; CACHEFFO, ALEXANDRE; LOPES, FABIO J. da S.; YOSHIDA, ALEXANDRE C.; GOMES, ANTONIO A.; SILVA, JONATAN J. da; LANDULFO, EDUARDO
Severe biomass burning (BB) events have become increasingly common in South America in the last few years, mainly due to the high number of wildfires observed recently. Such incidents can negatively influence the air quality index associated with PM2.5 (particulate matter, which is harmful to human health). A study performed in the Metropolitan Area of São Paulo (MASP) took place on selected days of July 2019, evaluated the influence of a BB event on air quality. Use of combined remote sensing, a surface monitoring system and data modeling and enabled detection of the BB plume arrival (light detection and ranging (lidar) ratio of (50 ± 34) sr at 532 nm, and (72 ± 45) sr at 355 nm) and how it affected the Ångström exponent (>1.3), atmospheric optical depth (>0.7), PM2.5 concentrations (>25 µg.m−3), and air quality classification. The utilization of high-order statistical moments, obtained from elastic lidar, provided a new way to observe the entrainment process, allowing understanding of how a decoupled aerosol layer influences the local urban area. This new novel approach enables a lidar system to obtain the same results as a more complex set of instruments and verify how BB events contribute from air masses aloft towards near ground ones.
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
Biomass burning measurements in Brazil
2010 - MARIANO, GLAUBER L.; MARTINS, MARIA P.P.; LANDULFO, EDUARDO; LOPES, FABIO; HELD, GERHARD; ANJOS, SERGIO dos; STEFFENS, JULIANA
Brazil has an important role in the biomass burning aerosol activity. During the Dry Season (JuneSeptember) of 2007 at Sao Paulo-SP and during the Dry season of 2009 at Rio Claro-SP, both in Brazil, aerosol profiling campaigns were carried out using a backscattering LIDAR system. The objective of this work is to evaluate the effects of the biomass burning in the southeastern Brazil, over distant (Sao Paulo - SP) (23 33’S, 46 44’W) and near (Rio Claro - SP) (22 23S, 47 32W) regions of the source of burnings mainly through laser remote sensing (LIDAR).
Emissions from sugar cane fires in the Central & Western State of São Paulo and aerosol layers over metropolitan São Paulo observed by IPEN's lidar: Is there a connection?
2011 - HELD, GERHARD; LANDULFO, EDUARDO; LOPES, FABIO J.S.; ARTETA, JOAQUIM; MARECAL, VIRGINIE; BASSAN, JOSE M.
Aerosols monitoring in Rio Claro, Brazil: using lidar and air pollution analyzers
2011 - MARIANO, GLAUBER L.; LOPES, FABIO J.; STEFFENS, JULIANA; MARTIN, MARIA P.P.; LANDULFO, EDUARDO; HELD, GERHARD; ANJOS, SERGIO dos