MARCIA TALITA AMORIM MARQUES

MARCIA TALITA AMORIM MARQUES

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Analysis of the dispersion of aerosol in Cubatão-SP using remote sensing techniques
2019 - ANDRADE, I. da S.; LANDULFO, E.; ARAUJO, E.C.; MENDONCA, F. de M.; SALANI, M.H.G. de A.; CORREA, T.; MARQUES, M.T.; COSTA, R.F. da; GUARDANI, R.
Aerosls are emitted by a several sources, these can be antropogenic – emitted by human activities - or natural.Their sudies are an important, because its impacts on the dynamics of the Earth’s atmosphere are huge. The study area have one of the most important industrial complex in the state of Sao Paulo. In the past the city of Cubatão was known as “death valey”, due to the environmental problems caused by the high levels of pollutants that was emitted by the industries. Following this event, regulatory laws on atmospheric emissions were developed, both at the state and federal levels. Today, although Cubatão has lower levels of pollution and controlled industrial emissions, but it is possible to observe overcoming air quality standards. Based on the presented context, the present work aims to conduct a study of the dispersion of aerosols in the region of Cubatão-SP using several techniques, such as: remote sensing (elastic lidar and wind lidar), satellite data, air quality information and also simulations of air masses using a model.
Correlation study between air quality data and the Lidar system in Cubatao, Sao Paulo
2017 - ARAUJO, ELAINE C.; ANDRADE, IZABEL da S.; MACEDO, FERNANDA de M.; CORREA, THAIS; SALANI, MARIA H.G. de A.; COSTA, RENATA F. da; RAMOS, SERGIANA dos P.; MARQUES, MARCIA T.A.; LOPES, DANIEL S.; GUARDANI, MARIA L.G.; LANDULFO, EDUARDO; GUARDANI, ROBERTO
We present here the results of two methods with a scanning multiwavelength elastic lidar system and Beta Ray method (CETESB) realized in an industrial area. The objective is a comparer of these two methods to identify fixed sources of aerosol and to monitor plume dispersion. The results of the two aligned techniques indicate that can provide information on the concentration, spatial and temporal distribution of aerosol.
Estimating the planetary boundary layer height from radiosonde and doppler lidar measurements in the city of São Paulo - Brazil
2018 - MARQUES, MARCIA T.A.; MOREIRA, GREGORI de A.; PINERO, MACIEL; OLIVEIRA, AMAURI P.; LANDULFO, EDUARDO
This study aims to compare the planetary boundary layer height (PBLH) values estimated by radiosonde data through the bulk Richardson number (BRN) method and by Doppler lidar measurements through the Carrier to Noise Ratio (CNR) method, which corresponds to the maximum of the variance of CNR profile. The measurement campaign was carried during the summer of 2015/2016 in the city of São Paulo. Despite the conceptual difference between these methods, the results show great agreement between them.
Rehearsal for assessment of atmospheric optical properties during biomass burning events and long-range transportation episodes at metropolitan area of São Paulo-Brazil (RAPEL)
2018 - LOPES, FABIO J.S.; GUERRERO-RASCADO, JUAN L.; BENAVENT-OLTRA, JOSE A.; ROMAN, ROBERTO; MOREIRA, GREGORI A.; MARQUES, MARCIA T.A.; SILVA, JONATAN J. da; ALADOS-ARBOLEDAS, LUCAS; ARTAXO, PAULO; LANDULFO, EDUARDO
During the period of August-September 2016 an intensive campaign was carried out to assess aerosol properties in São Paulo-Brazil aiming to detect long-range aerosol transport events and to characterize the instrument regarding data quality. Aerosol optical properties retrieved by the GALION - LALINET SPU lidar station and collocated AERONET sunphotometer system are presented as extinction/ backscatter vertical profiles with microphysical products retrieved with GRASP inversion algorithm.
Monitoring the industrial sources of aerosol in Cubatao, Brazil, using a scanning elastic lidar and a lidar doppler
2018 - COSTA, RENATA F. da; MARQUES, MARCIA T.A.; MACEDO, FERNANDA de M.; ANDRADE, IZABEL da S.; ARAUJO, ELAINE C.; CORREA, THAIS; SALANI, MARIA H.G. de A.; LOPES, DANIEL S.; GUARDANI, MARIA L.G.; LANDULFO, EDUARDO; GUARDANI, ROBERTO
Field campaigns with a scanning multiwavelength elastic lidar coupled with a Doppler system to monitor industrial atmospheric aerosol emissions were carried out, with the objective of monitoring aerosol emission sources and plume dispersion. Since the technique provides information on the spatial and temporal distribution of aerosol concentration, the implementation of a systematic monitoring procedure is proposed as a valuable tool in air quality monitoring applied to regions of interest.
Atmospheric stability using Doppler Wind Lidar profiler: a Case Study in Florianópolis Island
2016 - SANTOS, P.A.A.; SAKAGAMI, Y.; HAAS, R.; PASSOS, J.C.; TAVES, F.F.; NASSIF, F.; MOREIRA, A.; MOREIRA, G.A.; MARQUES, M.T.A.; BEU, C.; LANDULFO, E.
The effects of atmospheric stability can be important for many wind energy applications. This work aims to investigate the atmospheric stability using two Doppler wind lidar profilers based on a simple method that analyses how the wind shear variates with height. The experiment was carried on Florianopolis Island, located in the south coast of Brazil. The dataset covered a period from December 2014 to February 2015. The Windcube08 lidar has a range from 40m to 500m and the Windcube70 lidar was setup to range from 100m to 1000m. Both lidars recorded a 10min average wind speed with a vertical resolution of 20m. In addition, a 3D sonic anemometer measured turbulent fluxes at 20Hz. The method evaluated the variation of wind shear with height and was associated with the stability classes based on Obukhov Length. The wind speed of the two lidars was compared at 100m, 200m, 300m, 400m and 500m. This comparison showed an excellent agreement, with values better than R2=0.996 and RMSE=0.15 m/s. The results of wind profile indicated an unique condition at night, where were consistently observed convective wind profiles from 40m to 120m and stratified flow above 120m. Then, the presented method was adjusted to consider wind profile heights from 120m to 300m. The analysis of the atmospheric stability also presented a good agreement when comparing both lidars. The Very stable, stable and near stable conditions represented 41,2% (Windcube08) and 27,6% (Windcube70). On the other hand, the unstable condition was dominated by a very unstable condition with 21% and 38,7%, respectively. The neutral condition was the most frequent with 36,8% and 32,2%, respectively. The results of atmospheric stability classes diverged between the two lidars from 5h to 10h UTC, because of differences on wind speed average of around -0.8 m/s from 100m to 200m. In conclusion, the site presented specific conditions, which showed the challenges to propose an universal method to estimate the atmospheric stability using only doppler wind lidar data. However, the method achieved good agreement when comparing the wind profile with the atmospheric stability classes.
Nocturnal jet observational study over Sao Paulo city with wind Lidar
2016 - BEU, CASSIA M.L.; MARQUES, MARCIA T.A.; LANDULFO, EDUARDO
Sao Paulo is the biggest city of a dense Metropolitan Region with more 38 municipalities. The statistic government agency (IBGE) estimates that more than 20 million of inhabitants live in the Metropolitan Area. Just for Sao Paulo City, the population is more than 11 million of inhabitants and 7 million vehicles, in according to Detran (the traffic agency). Such density is a challenge for managing the quality air control and several studies have been carried out to understand the pollution dispersion over Sao Paulo Metropolitan Region (SPMR). Lapat (a Sao Paulo University team that studies pollution) have been developed important researches in this topic and some results are available in its site (http://www.lapat.iag.usp.br/index.html). One important result is that car emissions have high impact over the atmospheric pollution. Although that and others initiatives, many questions remain unanswered and the observational aspects represents a huge barrier as have been highlighted in several works. The data absence in the PBL (Planetary Boundary Layer) over SPMR was emphasized in a recent work dealing with LES modelling of the Nocturnal Jet (NJ). Therefore, the PBL observational features are an important contribution to research development of SPRM pollution dispersion field. In this sense, this work presents some aspects of the NJ observed over Sao Paulo City with a wind lidar for three months period (December-2015, January-2016 and February-2016) and expect to contribute to SPMR dispersion researches.
Monitoring the environmental impact of aerosol loading and dispersion from distinct industrial sources in Cubatao, Brazil, using a scanning lidar
2016 - COSTA, RENATA F. da; MARQUES, MARCIA T.A.; LOPES, DANIEL S.; GUARDANI, MARIA L.G.; MACEDO, FERNANDA de M.; LANDULFO, EDUARDO; GUARDANI, ROBERTO
This paper reports the results of campaigns carried out with a scanning lidar system in an industrial area for monitoring the spatial distribution of atmospheric aerosol. The aim of the study was to verify the possibility of applying a lidar system to identify fixed sources of aerosol emission, as well as to monitor the dispersion of the emitted plume, and the ability of the system to evaluate pertinent properties of the suspended particles, such as particle number concentration and representative particle size. The data collection was carried out with a scanning backscatter lidar system in the biaxial mode with a three-wavelength light source, based on a commercial Nd:YAG laser, operating at 355 nm, 532 nm, and 1064 nm. The campaigns were carried out in an industrial site close to the city of Cubatao, Brazil, 23º 53’ S and 46º 25’ W, one of the largest industrial sites of the Country, comprising a steel plant, two fertilizer complexes, a cement plant and a petrochemical complex. Backscattered light intensity plots were made from the primary data collected via 360-degree scans at 15 degree elevation. The collected data correspond to distances ranging from 200 m to 1500 m from the measurement location. The results indicate that the technique can provide valuable information on the spatial and temporal distribution of aerosol concentration in the area, which therefore can represent a valuable tool in source apportionment and to validate plume dispersion models.
Estimation of turbulence production by nocturnal low-level jets in Sao Paulo (Brazil)
2016 - BEU, CASSIA M.L.; MARQUES, MARCIA T.A.; NAKAEMA, WALTER M.; SAKAGAMI, YOSHIAKI; SANTOS, PEDRO A.A.; MOREIRA, A.C. de C.A.; LANDULFO, EDUARDO
Two Doppler lidars were recently used to collect data from the planetary boundary layer (PBL) in Sao Paulo city (23º32’S, 46 º38’W). The measurement campaign was carried out from December-2015 to February-2016, during the summer, which is the rainy season. Although Sao Paulo is the main city of a huge metropolitan region with more than 11 million of inhabitants and 7 millions of vehicles, according to the government agencies, the lack of PBL observational data is still a limitation for the atmospheric dispersion studies. Therefore, this work should contribute to the comprehension of PBL mechanisms and also for future atmospheric modeling studies. The data revealed that the nocturnal low-level jets (LLJs) frequently occurred along those 3 months, but its height is highly variable, from 100 m up to 650 m. It was also seen that the nocturnal LLJs can extend for several hours, right before the sunset until sunrise. This work aims to investigate the turbulence production by the nocturnal LLJs and its influence into the stable boundary layer (SBL).
Detecting the planetary boundary layer height from low-level jet with doppler lidar measurements
2015 - MOREIRA, G. de A.; MARQUES, M.T.A.; NAKAEMA, W.; MOREIRA, A.C. de C.A.; LANDULFO, E.