Synoptic-Scale Variability in Atmospheric Suspended Sulfate Concentrations.
Abstract
The spatial variation in atmospheric suspended sulfate concentrations are studied for evidence of meteorologically linked sulfate transformation and transportation. Low frequency (every 12-14 days) data from 41 National Air Surveillance Network stations as well as higher frequency (every 2-3 days) data available from two special studies are examined. Variations in high frequency data with wind direction for St. Louis, Missouri, are compared to local and regional sources of precursor pollutants for two one-year periods; January-December 1969 and April 1975-March 1976. Spatial variations in low frequency sulfate concentrations during the spring season (March-May) for the six-year period 1969-1974 are compared with synoptic weather and wind circulation patterns. These comparisons indicate that regional and local sulfate transport can largely account for large-scale sulfate variations. Sulfate transformation due to humidity, temperature and sunlight intensity do not adequately explain observed variations, but may be of secondary importance. The existence of regionally high concentrations of sulfate in the northeastern United States and of a general summertime peak in sulfate values is confirmed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1978
- Accession Number
- ADA058399
Entities
People
- Brian Wells Galusha
Organizations
- Air Force Institute of Technology