Carbon footprint maps reveal urban-suburban divide

Jan 17, 2014 by Tony Barboza

Where you live in a metropolis - the city or the suburbs - can make a huge difference in how much you are contributing to climate change, according to a new study.

People in the densely populated cores of big cities are responsible for less , but the more carbon-intensive lifestyle of their far-flung suburbs cancels out any of the benefits, researchers at the University of California, Berkeley, found.

The analysis used household income, vehicle ownership, home size, population density, weather and other data to estimate how different areas of the United States contribute to emissions at the household level.

Researchers found a striking divide: low-carbon city centers ringed by suburbs where households are responsible for an outsize proportion of greenhouse . In many big metropolitan areas like New York or Los Angeles, their research found, a family that lives in the urban core has about a 50 percent smaller carbon footprint than a similar-sized family in a distant suburb.

"The affluent suburbanites that commute long distances more than make up for the low-transportation footprint of urban dwellers," said Daniel Kammen, a professor of energy at UC Berkeley.

As part of the project, researchers produced interactive maps (coolclimate.berkeley.edu/maps) where users can see average household carbon footprints at the ZIP Code level and how much of it is related to transportation, housing, food, goods and services.

"You can see the green urban cores and the carbon shadows of the suburbs," Kammen said.

The study revealed big regional disparities as well.

A greater portion of carbon footprints in the Midwest are related to housing because of the region's cold winters and its reliance on more carbon-intensive coal to generate electricity. California has a cleaner energy portfolio but people drive a lot, so household carbon footprints there are dominated by emissions from transportation.

The study, funded by the National Science Foundation and the California Air Resources Board, was published in the journal Environmental Science & Technology.

The group behind the research, known as the Cool Climate Network, also produced a tool that allows users to calculate their carbon footprint and see how it compares to their neighbors. It is available at coolclimate.berkeley.edu/carboncalculator.

Explore further: Suburban sprawl cancels carbon footprint savings of dense urban cores

add to favorites email to friend print save as pdf

Related Stories

Carbon calculator provides personalized footprint

Feb 29, 2008

Researchers at the University of California, Berkeley, have created a carbon calculator that shows people as well as cities and businesses how their lifestyles contribute to global warming and identifies areas ...

Recommended for you

UN sends team to clean up Bangladesh oil spill

18 minutes ago

The United Nations said Thursday it has sent a team of international experts to Bangladesh to help clean up the world's largest mangrove forest, more than a week after it was hit by a huge oil spill.

How will climate change transform agriculture?

34 minutes ago

Climate change impacts will require major but very uncertain transformations of global agriculture systems by mid-century, according to new research from the International Institute for Applied Systems Analysis.

Report: Radiation leak at nuclear dump was small

40 minutes ago

A final report by independent researchers shows the radiation leak from the federal government's underground nuclear waste repository in southern New Mexico was small and localized.

Confucian thought and China's environmental dilemmas

5 hours ago

Conventional wisdom holds that China - the world's most populous country - is an inveterate polluter, that it puts economic goals above conservation in every instance. So China's recent moves toward an apparent ...

Deforestation threatens species richness in streams

5 hours ago

With a population of 1.3 billion, China is under immense pressure to convert suitable areas into arable land in order to ensure a continued food supply for its people. Accordingly, China is among the top ...

User comments : 3

Adjust slider to filter visible comments by rank

Display comments: newest first

3432682
1 / 5 (3) Jan 18, 2014
Carbon footprint? I am 50% carbon, and so are almost all other animals and plants (dry weight).
OZGuy
1 / 5 (1) Jan 18, 2014
That may hold for cold climates but here:
Most suburban households do not run air-conditioners or clothes dryers, most inner-cirt apartments do. Many suburban houses are now running solar panels and solar hot water, inner-city apartments don't.
bmorrow492
not rated yet Feb 21, 2014
Yes, poor people have smaller carbon footprints.

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.