CO2 Intensity and the Importance of Country Level Differences: An Analysis of the Relationship between per Capita Emissions and Population Density

36 Pages Posted: 22 May 2015

See all articles by Thomas Longden

Thomas Longden

Macquarie University, Macquarie Business School; CMCC - Centro Euro-Mediterraneo sui Cambiamenti Climatici

Date Written: May 22, 2015

Abstract

Previous studies have found an inverse (or negative) correlation between urban population density and per capita emissions from land transport. In contrast, this paper finds a positive relationship between per capita CO2 emissions from transport and population density using a dataset of over 200 cities from 28 countries. This positive relationship holds when a range of variables are accounted for and the specification of the regression analysis captures the distinction between country level differences, high/low emission intensity or city specific fixed effects. Separating the cities into two groups based on the clustering that occurs on either side of a crucial point of three tonnes of CO2 emissions per capita highlights the peculiarity of the higher emission intensity of North American cities. Rather than finding a consistent relationship across all cities, this paper finds that cities in North America are distinct from those located in other countries and that the estimated relationship between urban population density and emissions from transport is different across the two groups of countries. The results of this paper have consequences for policy prescriptions that are related to previous results that find that a reduction in per capita emissions tends to occur with an increase population density.

Keywords: Transport, CO2 Emissions, Population Density

JEL Classification: R40, Q54, Q56

Suggested Citation

Longden, Thomas, CO2 Intensity and the Importance of Country Level Differences: An Analysis of the Relationship between per Capita Emissions and Population Density (May 22, 2015). FEEM Working Paper No. 047.2015, Available at SSRN: https://ssrn.com/abstract=2609298 or http://dx.doi.org/10.2139/ssrn.2609298

Thomas Longden (Contact Author)

Macquarie University, Macquarie Business School ( email )

New South Wales 2109
Australia

CMCC - Centro Euro-Mediterraneo sui Cambiamenti Climatici ( email )

via Augusto Imperatore, 16
Lecce, I-73100
Italy

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