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Air pollution modeling in São Paulo using bottom-up vehicular emissions inventories

Dr. Sergio Ibarra-Espinosa. Advisor: Dra. Rita Ynoue

Foto de Prof. Dr. Fátima Andrade de São Paulo, Julho 2018

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Introduction

Pollution caused 9 million premature deaths in 2015, 16% of all deaths worldwide (LANDRIGAN et al, 2017).

Air pollution also affects ecosystemic services.

There is consensus that climate change is due to human activity (COOK et al., 2016).

It is crucial to understand the physical and chemical mechanism of generation of the air pollutants, the emissions.

Emissions inventory is the compilation of mass of pollutants released in a region.

The most important source of pollution in Brazilian cities are vehicles.

Inventories of mobile sources usually requires traffic statistics and emission factors.

Emission factors come from CETESB or from tunnel studies (Fátima's group).

These inventories have been used in different atmospheric simulation (VARA-VELA et al., 2016; ANDRADE et al., 2015).

Emissions inventories are usually seen as a scapegoat when simulations do not match observation (PULLES; HESLINGA, 2010).

Newer and better inventories would improve atmospheric studies in urban environments.

Objective

to develop a bottom-up vehicular emissions inventory model applicable for São Paulo metropolitan areas and evaluate its impacts on air pollution.

Objective Specifics

Review, identify and elaborate activity traffic data and factors.

Construct VEIN to process traffic data, produce data-bases and maps.

Compile a high resolution emissions inventory for the main metropolitan regions of São Paulo.

Impacts of vehicules on air quality.

free software

Data and materials (available)

Traffic simulation from Traffic Engineering Agency (CET) for Metropolitan Area of São Paulo (MASP)..

Traffic simulation from Secretary of Public Transportation and Mobility (SPTRANS) for MASP..

Traffic counts from CET and ARTESP

GPS recordings from Internet databases for all regions (MAPLINK, Lab GeoProcessing Poli-USP).

Emission factors CETESB and speciations Fatima's group.

Methods

VEIN

Eixport

WRF-Chem.

Results!

Vehicular flow

Results!

Emissions

Emissões de NOx (t/km2/ano)

Results!

Concentrations

Conclusions...

it was FUN

Achievements

* 5 Paper, 1 GMD IF: 3.9
* 13 Conferences
* 1 Book (Draft) https://bookdown.org/zergioibarra/veinbook/
* 5 R packages (vein, eixport, cptcity, emissv, ratmos).
* 6 media appearance, including TV Record, BBC and cover of Diario Oficial.
* 83 credits in 4 years.

Gracias

* A mi mamá, que siempre me impulsiono para salir adelente, y que fallecio el 2015 durante mi doctorado
* Minha namorada Amanda Rehbein que me ajuda focar na vida.
* Minha ex orientadora Rita Ynoue
* Meus co-orientadores Fátima Andrade e Edmilson Freitas (novo chefe).
* Amigos, colegas, trabalhadores do IAG.

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Fork me ! https://ibarraespinosa.github.io/2018_IAG