Urban PM Concentration Spatial Pattern

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Urban PM Concentration Spatial Pattern

• Background and Rationale
• Daily Average PM10 Concentrations Philadelphia,
  July 1995
• Monthly Seasonal Average PM10 Concentrations
  Philadelphia, Summer 1995
• Resource Links

(Turco, 1997)
Contact Stefan Falke, stefan_at_mecf.wustl.edu
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Background Rationale

• Urban areas contain sources of PM that increase
  PM concentrations and cause hot spots in the PM
  spatial pattern
• The spatial pattern within an urban area has hot
  spots that are in excess of background
  concentrations
• Urban PM concentrations are variant in time with
  high variation from day to day
• Knowledge of urban concentrations aids in the
  siting of monitors

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Daily Average PM10 ConcentrationsPhiladelphia,
July 1995
PM10 concentrations in Philadelphia exhibit high
spatial texture from day to day. Background
concentrations on July 8 are 30 -38 µg/m3 and
concentrations at some urban sites are above 79
µg/m3. High concentrations are seen only in one
location On July 20, the background is 30-46
µg/m3 and multiple locations experience high
concentrations
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Monthly Seasonal Average PM10 Philadelphia,
Summer 1995

• Monthly and seasonal spatial pattern has a large
  spatial variation although it is generally less
  than that of the daily concentrations.
• Local source influenced sites are represented as
  hotspots in the spatial concentration maps.
• The summer average concentrations tends to have a
  smoother pattern than that for the single month
  of July

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Resource Links

• Workbook Table of Contents
• Comment and Feedback Page
• Applications / Reports
• Data sets used in the Applications
• Methods and tools used in the Applications