“Metropolitan areas look like carbon footprint hurricanes, with dark green, low-carbon urban cores surrounded by red, high-carbon suburbs,” said Christopher Jones, a doctoral student working with Kammen in the Energy and Resources Group. The average carbon footprint of households living in the center of large, population-dense urban cities is about 50 percent below average, while households in distant suburbs are up to twice the average. “We hope cities will use this information to begin to create highly tailored climate action plans for their communities.”Ī key finding of the UC Berkeley study is that suburbs account for half of all household greenhouse gas emissions, even though they account for less than half the U.S. “The goal of the project is to help cities better understand the primary drivers of household carbon footprints in each location,” said Daniel Kammen, Class of 1935 Distinguished Professor of Energy in the Energy and Resources Group and the Goldman School of Public Policy, and director of the Renewable and Appropriate Energy Laboratory. zip codes in all 50 states are available online at Interactive carbon footprint maps for more than 31,000 U.S. households, so-called household carbon footprints. , uses local census, weather and other data – 37 variables in total – to approximate greenhouse gas emissions resulting from the energy, transportation, food, goods and services consumed by U.S. The study, which has been accepted for publication in the journalĮnvironmental Science & Technology (ES&T) A CoolClimate Map of New York City’s carbon footprint by zipcode tabulation area shows a pattern typical of large metropolitan areas: a small footprint (green) in the urban core but a large footprint (orange and red) in surrounding suburbs.ĭominated by emissions from cars, trucks and other forms of transportation, suburbs account for about 50 percent of all household emissions – largely carbon dioxide – in the United States.
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