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Denver To Barcelona: Global Cities And Greenhouse Gas Emissions

Date:
September 24, 2009
Source:
American Chemical Society
Summary:
Denver released the largest amount of greenhouse gases (GHG) and Barcelona the smallest amount in a new study documenting how differences in climate, population density and other factors affect GHG emissions in global cities. The study could identify ways in which cities can reduce GHG emissions.

A view of downtown Denver, Colorado.
Credit: iStockphoto/Brandon Laufenberg

Denver released the largest amount of greenhouse gases (GHG) and Barcelona the smallest amount in a new study documenting how differences in climate, population density and other factors affect GHG emissions in global cities.

The study, which could identify ways in which cities can reduce GHG emissions, is scheduled for October 1 issue of ACS' Environmental Science & Technology, a semi-monthly journal.

Christopher Kennedy and colleagues note in the new study that some cities are developing strategies to reduce releases of GHG, which include carbon dioxide, methane, and other gases that can contribute to global warming through the greenhouse effect. Not enough information was previously available on why emissions vary considerably among different cities. The authors asked, "How and why do emissions differ between cities?"

To help answer those questions, the scientists analyzed those variations and how climate, power generation, transportation, waste processing, and other factors contributed to the differences. Denver had the highest overall GHG emissions, with levels two to five times higher than other cities. Its high levels were due partly to its high use of electricity, heating and industrial fuels, and ground transportation, they note. Los Angeles was second on the list, followed by Toronto and Cape Town (tied for third), Bangkok, New York City, London, Prague, Geneva, and Barcelona.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Kennedy et al. Greenhouse Gas Emissions from Global Cities. Environmental Science & Technology, 2009; DOI: 10.1021/es900213p

Cite This Page:

American Chemical Society. "Denver To Barcelona: Global Cities And Greenhouse Gas Emissions." ScienceDaily. ScienceDaily, 24 September 2009. <www.sciencedaily.com/releases/2009/09/090923133007.htm>.
American Chemical Society. (2009, September 24). Denver To Barcelona: Global Cities And Greenhouse Gas Emissions. ScienceDaily. Retrieved October 22, 2014 from www.sciencedaily.com/releases/2009/09/090923133007.htm
American Chemical Society. "Denver To Barcelona: Global Cities And Greenhouse Gas Emissions." ScienceDaily. www.sciencedaily.com/releases/2009/09/090923133007.htm (accessed October 22, 2014).

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