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Atmosphere 2019, 10(3), 117; https://doi.org/10.3390/atmos10030117

Evaluating the Effects of Urbanization Evolution on Air Temperature Trends Using Nightlight Satellite Data

1
Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, 10129 Torino, Italy
2
Department of Civil, Chemical, Environmental and Materials Engineering, Università di Bologna, 40136 Bologna, Italy
*
Author to whom correspondence should be addressed.
Received: 21 December 2018 / Revised: 26 February 2019 / Accepted: 26 February 2019 / Published: 4 March 2019
(This article belongs to the Section Biometeorology)
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Abstract

Confounding factors like urbanization and land-use change could introduce uncertainty to the estimation of global temperature trends related to climate change. In this work, we introduce a new way to investigate the nexus between temporal trends of temperature and urbanization data at the global scale in the period from 1992 to 2013. We analyze air temperature data recorded from more than 5000 weather stations worldwide and nightlight satellite measurements as a proxy for urbanization. By means of a range of statistical methods, our results quantify and outline that the temporal evolution of urbanization affects temperature trends at multiple spatial scales with significant differences at regional and continental scales. A statistically significant agreement in temperature and nightlight trends is detected, especially in low and middle-income regions, where urbanization is rapidly growing. Conversely, in continents such as Europe and North America, increases in temperature trends are typically detected along with non-significant nightlight trends. View Full-Text
Keywords: urban heat island effect; nightlights; urbanization; temperature; statistical inference; climate change; global warming; land-use change urban heat island effect; nightlights; urbanization; temperature; statistical inference; climate change; global warming; land-use change
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Paranunzio, R.; Ceola, S.; Laio, F.; Montanari, A. Evaluating the Effects of Urbanization Evolution on Air Temperature Trends Using Nightlight Satellite Data. Atmosphere 2019, 10, 117.

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