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Fine particulate concentrations on sidewalks in five Southern California cities

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Title: Fine particulate concentrations on sidewalks in five Southern California cities
Authors: Boarnet, Marlon G.1 mgboarne@uci.edu, Houston, Douglas1 houston@uci.edu, Edwards, Rufus2 edwardsr@uci.edu, Princevac, Marko3 marko.princevac@ucr.edu, Ferguson, Gavin1 fergusog@uci.edu, Pan, Hansheng3 hapan@engr.ucr.edu, Bartolome, Christian3 cbartolo@engr.ucr.edu
Source: Atmospheric Environment. Aug2011, Vol. 45 Issue 24, p4025-4033. 9p.
Subject Terms: *Particulate matter, *Air pollution, *Urban pollution, *Air quality, Sidewalks, City traffic, Regression analysis
Geographic Terms: Los Angeles (Calif.), California
Abstract: Abstract: This research provides an exploratory examination of the factors associated with fine particle concentrations in intersection and sidewalk microenvironments in five study areas in the Los Angeles region. The study areas range from low-density, auto-oriented development patterns to dense urban areas with mid- and high-rise buildings. Average concentrations of FPDT (fine particle concentrations measured with DustTrak Aerosol Monitors) ranged from about 20 to 70 μg m−3 across study areas during stationary and mobile (walking) monitoring in morning, midday, and evening periods. Results suggest that fine particle concentrations are highly variable on urban sidewalks. A regression analysis shows that concentrations are associated with traffic and the proximate built environment characteristics after accounting for meteorological factors, time of day, and location in the region. Regressions show higher concentrations were associated with lower wind speeds and higher temperatures, higher adjacent passenger vehicle traffic, higher ambient concentrations, and street canyons with buildings of over five stories. Locations in street canyons with 2–5 story buildings and with more paving and open space had lower concentrations after accounting for other factors. The associations with traffic and built environment variables explained a small amount of the variation in FPDT concentrations, suggesting that future research should examine the relative role of localized traffic and built environment characteristics compared to regional ambient concentrations and meteorology. [Copyright &y& Elsevier]
Copyright of Atmospheric Environment is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Fine particulate concentrations on sidewalks in five Southern California cities
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  Data: <searchLink fieldCode="AR" term="%22Boarnet%2C+Marlon+G%2E%22">Boarnet, Marlon G.</searchLink><relatesTo>1</relatesTo><i> mgboarne@uci.edu</i><br /><searchLink fieldCode="AR" term="%22Houston%2C+Douglas%22">Houston, Douglas</searchLink><relatesTo>1</relatesTo><i> houston@uci.edu</i><br /><searchLink fieldCode="AR" term="%22Edwards%2C+Rufus%22">Edwards, Rufus</searchLink><relatesTo>2</relatesTo><i> edwardsr@uci.edu</i><br /><searchLink fieldCode="AR" term="%22Princevac%2C+Marko%22">Princevac, Marko</searchLink><relatesTo>3</relatesTo><i> marko.princevac@ucr.edu</i><br /><searchLink fieldCode="AR" term="%22Ferguson%2C+Gavin%22">Ferguson, Gavin</searchLink><relatesTo>1</relatesTo><i> fergusog@uci.edu</i><br /><searchLink fieldCode="AR" term="%22Pan%2C+Hansheng%22">Pan, Hansheng</searchLink><relatesTo>3</relatesTo><i> hapan@engr.ucr.edu</i><br /><searchLink fieldCode="AR" term="%22Bartolome%2C+Christian%22">Bartolome, Christian</searchLink><relatesTo>3</relatesTo><i> cbartolo@engr.ucr.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Atmospheric+Environment%22">Atmospheric Environment</searchLink>. Aug2011, Vol. 45 Issue 24, p4025-4033. 9p.
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  Data: *<searchLink fieldCode="DE" term="%22Particulate+matter%22">Particulate matter</searchLink><br />*<searchLink fieldCode="DE" term="%22Air+pollution%22">Air pollution</searchLink><br />*<searchLink fieldCode="DE" term="%22Urban+pollution%22">Urban pollution</searchLink><br />*<searchLink fieldCode="DE" term="%22Air+quality%22">Air quality</searchLink><br /><searchLink fieldCode="DE" term="%22Sidewalks%22">Sidewalks</searchLink><br /><searchLink fieldCode="DE" term="%22City+traffic%22">City traffic</searchLink><br /><searchLink fieldCode="DE" term="%22Regression+analysis%22">Regression analysis</searchLink>
– Name: SubjectGeographic
  Label: Geographic Terms
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  Data: <searchLink fieldCode="DE" term="%22Los+Angeles+%28Calif%2E%29%22">Los Angeles (Calif.)</searchLink><br /><searchLink fieldCode="DE" term="%22California%22">California</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Abstract: This research provides an exploratory examination of the factors associated with fine particle concentrations in intersection and sidewalk microenvironments in five study areas in the Los Angeles region. The study areas range from low-density, auto-oriented development patterns to dense urban areas with mid- and high-rise buildings. Average concentrations of FPDT (fine particle concentrations measured with DustTrak Aerosol Monitors) ranged from about 20 to 70 μg m−3 across study areas during stationary and mobile (walking) monitoring in morning, midday, and evening periods. Results suggest that fine particle concentrations are highly variable on urban sidewalks. A regression analysis shows that concentrations are associated with traffic and the proximate built environment characteristics after accounting for meteorological factors, time of day, and location in the region. Regressions show higher concentrations were associated with lower wind speeds and higher temperatures, higher adjacent passenger vehicle traffic, higher ambient concentrations, and street canyons with buildings of over five stories. Locations in street canyons with 2–5 story buildings and with more paving and open space had lower concentrations after accounting for other factors. The associations with traffic and built environment variables explained a small amount of the variation in FPDT concentrations, suggesting that future research should examine the relative role of localized traffic and built environment characteristics compared to regional ambient concentrations and meteorology. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Atmospheric Environment is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.atmosenv.2011.04.047
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 4025
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      – SubjectFull: Particulate matter
        Type: general
      – SubjectFull: Air pollution
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      – SubjectFull: Urban pollution
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      – SubjectFull: Air quality
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      – SubjectFull: Sidewalks
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      – SubjectFull: City traffic
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      – SubjectFull: Regression analysis
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      – SubjectFull: Los Angeles (Calif.)
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      – SubjectFull: California
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      – TitleFull: Fine particulate concentrations on sidewalks in five Southern California cities
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              Text: Aug2011
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