Local and regional contributions of fine particulate mass to urban areas in the Mid-Atlantic and Southwestern US. Report for November 1997--September 1998

Technical Report · Mon Mar 29 04:00:00 EST 1999

OSTI ID:6408405

Schichtel, B A

This work examined the seasonal local and regional contributions of PM2.5 to urban areas in the Mid-Atlantic States: Baltimore, MD, Washington, DC, and Philadelphia, PA and Phoenix, AZ in the Southwest. This was accomplished using two different methods. The first method estimated urban excesses by comparing seasonal PM2.5 trends at the urban monitors to nearby rural monitors. The second approach used a simple model based on the PM2.5 dependence on wind speed and wind direction to classify a site as being dominated by local or regional source contributions. The method also quantifies the regional contributions during high wind speed conditions. The wind vectors were derived from surface observations and air mass histories. All monitoring sites in the urban centers were dominated by local sources during the cold season.

• Research Organization: Washington Univ., Center for Air Pollution Impact and Trend Analysis, St. Louis, MO (United States); Environmental Protection Agency, National Exposure Research Lab., Research Triangle Park, NC (United States)
• Sponsoring Organization: EPA; Environmental Protection Agency, Washington, DC (United States)
• OSTI ID: 6408405
• Report Number(s): PB-99-147209/XAB; CNN: EPA-7D-0869-NAEX
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION
AIR POLLUTION MONITORING
ENVIRONMENTAL TRANSPORT
MASS TRANSFER
MATHEMATICAL MODELS
MONITORING
PARTICLES
PARTICULATES
POLLUTION
REGIONAL ANALYSIS
SEASONAL VARIATIONS
URBAN AREAS
VARIATIONS