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How does densification versus urban sprawl affect air pollution?

PhD defence, Tuesday, 11 May 2021. Victor H. Valencia.

2021.05.11 | Nanna Maria Elgaard Pedersen

Victor Hugo Valencia Alvear

During his PhD studies, Victor H. Valencia researched the impact of two alternative urban growth scenarios on air pollution for 2040 in Quito, Ecuador. One scenario with a low-density outward expansion following the last decades’ pattern (sprawl); and the other in which the horizontal expansion stops, and the population growth occurs within the 2017 urban area (densification). The urban form for the sprawl scenario is estimated by applying the LUCIA model and concentrations of CO, NOx, NO2, O3, and PM2.5 by the UBM model. A GIS-based model is developed to distribute aggregated emissions spatially.

The new research findings contribute to close a relevant gap in air pollution studies in Quito by developing and confirming the application of multiple modelling tools and to the understanding of the potential effects of changing the urban form of the city on the concentration of air pollutants and the number of inhabitants exposed to these concentrations.

The PhD study was completed at the Department of Environmental Science, Faculty of Technical Sciences, Aarhus University.

This summary was prepared by the PhD student.

Time: Tuesday, 11 May 2021 at 13:00
Place: To receive a link for online access to the event, please send an e-mail to Matthias Ketzel: mke@envs.au.dk  

Title of PhD thesis: Spatial Modelling of Urban Growth and its Influence on Air Pollution: Evaluation of Vertical versus Horizontal Growth of Quito.

Contact information: Victor H. Valencia, e-mail: victor.valencia@envs.au.dk, tel.: +45 71411278

Members of the assessment committee:

Program Manager Stijn Janssen, VITO, Flemish Institute for Technological Research, Belgium

Associate Professor Martin Rudbeck, Department of Geosciences and Natural Resource Management, Copenhagen University, Denmark

Senior researcher Marianne Zandersen (chairman), Department of Environmental Science, Aarhus University, Denmark


Gregor Levin, Department of Environmental Science, Aarhus University, Denmark
Matthias Ketzel, Department of Environmental Science, Aarhus University, Denmark

Ole Hertel, Department of Bioscience, Aarhus University, Denmark

Language: The Ph.D. dissertation will be defended in English

The defence is public.
Due to the coronavirus situation, the Ph.D. thesis will not be available for reading at the offices of the Ph.D. administration. Instead, interested parties may send an e-mail to gradschool.tech@au.dk to receive a digital copy of the Ph.D. thesis. Please note, it may, in certain cases, be necessary to make an individual arrangement to read the Ph.D. thesis.

PhD defence
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