The efficient, the intensive, and the productive: Insights from urban Kaya scaling

Gudipudi, Ramana, Rybski, Diego, Lüdeke, Matthias K. B., Zhou, Bin, Liu, Zhu and Kropp, Jürgen P. (2019) The efficient, the intensive, and the productive: Insights from urban Kaya scaling. Applied Energy, 236. pp. 155-162. ISSN 0306-2619

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Urban areas play an unprecedented role in potentially mitigating climate change and supporting sustainable development. In light of the rapid urbanisation in many parts on the globe, it is crucial to understand the relationship between settlement size and CO2 emission efficiency of cities. Recent literature on urban scaling properties of emissions as a function of population size has led to contradictory results and more importantly, lacked an in-depth investigation of the essential factors and causes explaining such scaling properties. Therefore, in analogy to the well-established Kaya Identity, we develop a relation combining the involved exponents. We demonstrate that application of this Urban Kaya Relation will enable a comprehensive understanding about the intrinsic factors determining emission efficiencies in large cities by applying it to a global dataset of 61 cities. Contrary to traditional urban scaling studies which use Ordinary Least Squares (OLS) regression, we show that the Reduced Major Axis (RMA) is necessary when complex relations among scaling exponents are to be investigated. RMA is given by the geometric mean of the two OLS slopes obtained by interchanging the dependent and independent variable. We discuss the potential of the Urban Kaya Relation in mainstreaming local actions for climate change mitigation.

Item Type: Article
Uncontrolled Keywords: kaya identity,sustainable cities,urban co emissions,urban kaya relation,urban scaling,building and construction,energy(all),mechanical engineering,management, monitoring, policy and law,sdg 11 - sustainable cities and communities,sdg 13 - climate action ,/dk/atira/pure/subjectarea/asjc/2200/2215
Faculty \ School: Faculty of Social Sciences > School of Global Development (formerly School of International Development)
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Depositing User: LivePure Connector
Date Deposited: 08 Jul 2019 15:30
Last Modified: 21 Oct 2022 22:34
DOI: 10.1016/j.apenergy.2018.11.054

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