Inhalation of primary motor vehicle emissions: Effects of urbanpopulation and land area

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Urban population density can influence transportation demand, as expressed through average daily vehicle-kilometers traveled per capita (VKT). In turn, changes in transportation demand influence total passenger vehicle emissions. Population density can also influence the fraction of total emissions that are inhaled by the exposed urban population. Equations are presented that describe these relationships for an idealized representation of an urban area. Using analytic solutions to these equations, we investigate the effect of three changes in urban population and urban land area (infill, sprawl, and constant-density growth) on per capita inhalation intake of primary pollutants from passenger vehicles. The magnitude of ... continued below

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Marshall, Julian D.; McKone, Thomas E. & Nazaroff, William W. June 14, 2004.

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Urban population density can influence transportation demand, as expressed through average daily vehicle-kilometers traveled per capita (VKT). In turn, changes in transportation demand influence total passenger vehicle emissions. Population density can also influence the fraction of total emissions that are inhaled by the exposed urban population. Equations are presented that describe these relationships for an idealized representation of an urban area. Using analytic solutions to these equations, we investigate the effect of three changes in urban population and urban land area (infill, sprawl, and constant-density growth) on per capita inhalation intake of primary pollutants from passenger vehicles. The magnitude of these effects depends on density-emissions elasticity ({var_epsilon}{sub e}), a normalized derivative relating change in population density to change in vehicle emissions. For example, if urban population increases, per capita intake is less with infill development than with constant-density growth if {var_epsilon}{sub e} is less than -0.5, while for {var_epsilon}{sub e} greater than -0.5 the reverse is true.

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  • Journal Name: Atmospheric Environment; Journal Volume: 39; Journal Issue: 2; Related Information: Journal Publication Date: 01/2005

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  • Report No.: LBNL--55458
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 860739
  • Archival Resource Key: ark:/67531/metadc787982

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • June 14, 2004

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  • Dec. 3, 2015, 9:30 a.m.

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  • April 1, 2016, 7:38 p.m.

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Marshall, Julian D.; McKone, Thomas E. & Nazaroff, William W. Inhalation of primary motor vehicle emissions: Effects of urbanpopulation and land area, article, June 14, 2004; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc787982/: accessed December 12, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.