Banca de DEFESA: FERNANDO LEITE NUNES DA COSTA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : FERNANDO LEITE NUNES DA COSTA
DATE: 31/08/2023
TIME: 08:00
LOCAL: meet.google.com/ccs-sveo-ado
TITLE:

Modeling and simulation of the dispersion of air pollutants applied to an urban road, using the HYSPLIT model

KEY WORDS:

Air pollution; Vehicular emission inventory; Monitoring station; Concentration of pollution; Air trajectories.

PAGES: 74
BIG AREA: Engenharias
AREA: Engenharia Sanitária
SUMMARY:

Population growth, especially in urban centers, has led to a significant increase in the fleet of vehicles, which results in higher emissions of pollutants in the air, affecting the health of the population and the environment. In this first case, about 4.2 million deaths are estimated to occur as a result of air pollution per year. Added to this are the destructive impacts on the ecosystem, which contribute to global warming. Thus, vehicular emissions are identified as one of the main sources of air pollution in urbanized regions. The objective of this investigation was to quantify and simulate the dispersion of air pollution resulting from atmospheric emissions in points of high vehicular traffic on Av. Agamenon Magalhães, Recife, Pernambuco, in a previously selected period, through mathematical modeling, using HYSPLIT. For this, the inventory of vehicular emissions was carried out in 2021, which sought to quantify and analyze the emissions of air pollutants from motor vehicles, providing a solid information basis for possible decision-making related to pollution control. From the HYSPLIT model, simulations of the atmospheric dispersions of vehicular emissions were made, in order to identify the areas with the highest concentrations and evaluate the air quality, in addition to observing the air trajectories from the point of emissions. The results, obtained throughout the investigation, offer important data for the understanding of vehicular emissions and their relationship with air quality, as well as possibilities for reflection on the use of strategies for pollution control. In this context, an increase of approximately 216% in the number of vehicles in Recife was observed over 30 years (1991-2021). In the year 2021, light vehicles (automobiles) accounted for 57.12% of Recife's total fleet and played a significant role in CO and CO2 emissions. Notably, during the weekends (Saturday and Sunday), an average reduction of 27% in pollutant emissions was observed. In addition, through the modeling performed, it was possible to identify the most impacted areas, covering up to 10 km of radius from the emission points. Neighborhoods such as Espinheiro, Encruzilhada and Alto José Bonifácio stood out as affected areas. Regarding the effects on human health, the evaluations remained in accordance with the standards established by Conama 491/2018. Simulations of air trajectories revealed that 83% of wind currents leave Southeast, while only 17% leave Northeast. This suggests the need to consider location as an essential variable for a future monitoring station installation in Recife in order to provide a more comprehensive understanding of air quality in the region. In summary, this research not only outlined possible guidelines for future investigations on air pollution, taking into account population growth and urbanization, but also contributed to the reflection of future scenarios. In addition, it offered subsidies for a possible consideration of sustainable urban planning strategies, promoting more conscious and effective approaches to urban development.

COMMITTEE MEMBERS:
Externo à Instituição - SÉRGIO LUCENA
Presidente - ***.296.924-** - MARILDA NASCIMENTO CARVALHO - UNICAP
Interno - ROMILDO MORANT DE HOLANDA