IDEAS home Printed from
   My bibliography  Save this paper

Investigation of Roadside Particulate Matter Concentration Surrounding Major Arterials in Five Southern Californian Cities


  • Pan, Hansheng
  • Bartolome, Christian
  • Princevac, Marko
  • Edwards, Rufus
  • Boarnet, Marlon


Vehicular emissions from arterials may present a risk to public health considering the type of surrounding built environments that can trap pollutants. In order to study the influence of urban morphometry on flow and dispersion of vehicular emissions, field measurements were performed in major arterials in 5 Southern Californian cities with different building geometries. Local mean wind, turbulence, virtual temperature, roadside fine particulate matter (PM2.5) concentration, and traffic flow data were collected in summer 2008. In each city, data were collected for three days, covering two hours during the morning and evening commute and lighter mid-day traffic. First, the observation shows the influence of building geometry on street level concentration of particulates. Tall buildings cause a strong downdraft which upon impinging the street level flushes street canyon from pollutants. Second, field experiments help us understand the influence of local meteorological variables and their interaction with urban canopy to particle concentration. Concentrations at the windward side of buildings within urban canopy are extremely sensitive to wind direction. In addition to wind direction, turbulent flux, sensible heat flux and turbulent velocity are also affecting concentrations by enhancing vertical transport.

Suggested Citation

  • Pan, Hansheng & Bartolome, Christian & Princevac, Marko & Edwards, Rufus & Boarnet, Marlon, 2010. "Investigation of Roadside Particulate Matter Concentration Surrounding Major Arterials in Five Southern Californian Cities," University of California Transportation Center, Working Papers qt62b8d9f5, University of California Transportation Center.
  • Handle: RePEc:cdl:uctcwp:qt62b8d9f5

    Download full text from publisher

    File URL:;origin=repeccitec
    Download Restriction: no

    Other versions of this item:


    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:cdl:uctcwp:qt62b8d9f5. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Lisa Schiff). General contact details of provider: .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.