The environmental neighborhoods of cities and their spatial extent; A study of New York City and Greater London
(2020) Seoul 2020 Big Data Forum
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- Abstract
- The concept of environmental neighborhood is introduced as the surrounding area influencing the environmental quality at a given point in a city. Our work proposes a novel methodology to measure its spatial extent. We compute the spatial correlation of air quality and urban parameters from high spatiotemporal resolution datasets for New York City and Greater London, where the urban characteristics are averaged over variable urban footprint sizes, ranging from 25 m × 25 m to 5000 m × 5000 m. The scale at which these correlations peak indicates the extent of the neighboring area that influences pollutant concentrations deviations from the city-wide average. The results show that the scale of these environmental neighborhoods ranges from ~1000 m (for attributes such as road area or building footmark) down to ~200 m (for building use or green area) and that the correlations vary following the diurnal cycle with highest peaks in the midafternoon.
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Llaguno, M. (2020). The environmental neighborhoods of cities and their spatial extent; A study of New York City and Greater London. Seoul 2020 Big Data Forum. https://hdl.handle.net/2078.5/219375