On the nature and origins of visibility-reducing aerosols in the Los Angeles air basin
Journal Article
·
· Adv. Environ. Sci. Technol.; (United States)
OSTI ID:6858583
The paper presents the measurements of the light-scattering coefficient and chemical composition of ambient aerosols during smog periods in the Los Angeles air basin. The data are statistically analyzed to compute the effective scattering efficiencies of secondary aerosols, which can estimate the contributions of reactive gases to reduced visibility. Sulfate and nitrate compounds scattered more light than other constituents of the aerosol; the ratio of SO/sub 2/ and NOx concentrations to the concentration of tracers for major source types was consistent with the amounts of SO/sub 2/ and NOx in the basin. The estimated contribution of large stationary sources of SO/sub 2/ to reduced visibility was comparable to that of automobiles.
- Research Organization:
- California Institute of Technology, Pasadena, CA
- OSTI ID:
- 6858583
- Journal Information:
- Adv. Environ. Sci. Technol.; (United States), Journal Name: Adv. Environ. Sci. Technol.; (United States) Vol. 9; ISSN AESTC
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOL MONITORING
AEROSOLS
AIR POLLUTION
CALIFORNIA
CHALCOGENIDES
CHEMICAL COMPOSITION
COLLOIDS
DATA ACQUISITION
DISPERSIONS
DISTRIBUTION
FEDERAL REGION IX
LIGHT SCATTERING
LOS ANGELES
MAPS
MONITORING
NITROGEN COMPOUNDS
NITROGEN OXIDES
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
POLLUTION
SCATTERING
SMOG
SOLS
SPATIAL DISTRIBUTION
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
URBAN AREAS
USA
VISIBILITY
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOL MONITORING
AEROSOLS
AIR POLLUTION
CALIFORNIA
CHALCOGENIDES
CHEMICAL COMPOSITION
COLLOIDS
DATA ACQUISITION
DISPERSIONS
DISTRIBUTION
FEDERAL REGION IX
LIGHT SCATTERING
LOS ANGELES
MAPS
MONITORING
NITROGEN COMPOUNDS
NITROGEN OXIDES
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
POLLUTION
SCATTERING
SMOG
SOLS
SPATIAL DISTRIBUTION
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
URBAN AREAS
USA
VISIBILITY