Growth of aerosol in an urban plume. [METROMEX program]
Conference
·
OSTI ID:7363293
Time changes of aerosol particle size distribution in the range of 0.01 ..mu..m diameter, concentration of O/sub 3/, NO, NO/sub 2/, SO/sub 2/, several hydrocarbons, and sulfate were measured in an urban plume. The investigation was conducted in a Lagrangian frame of reference using instrumented aircraft. The air parcel trajectory was identified by the movement of a tetroon launched from the ground to an altitude within the plume. This study was carried out in metropolitan St. Louis, Missouri, U.S.A., during the METROMEX program. A pronounced change in the aerosol particle size distribution and an increase in the total volume of the aerosol were observed. Gas to particle transformation involving existing nuclei is responsible for the aerosol growth. The results of the measurement of trace gases and the aerosol particles and their chemical analyses are presented and discussed. (auth)
- Research Organization:
- Battelle Pacific Northwest Labs., Richland, Wash. (USA)
- OSTI ID:
- 7363293
- Report Number(s):
- BNWL-SA-5537; CONF-760519-1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AERIAL MONITORING
AEROSOLS
AIR POLLUTION
ALTITUDE
CHALCOGENIDES
CHEMICAL EFFLUENTS
COLLOIDS
DISPERSIONS
ENVIRONMENT
HYDROCARBONS
METEOROLOGY
MIDWEST REGION
MISSOURI
MONITORING
NITROGEN COMPOUNDS
NITROGEN OXIDES
NORTH AMERICA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
OZONE
PARTICLE SIZE
PLUMES
POLLUTION
SAMPLING
SIZE
SOLS
SULFATES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TIME DEPENDENCE
URBAN AREAS
USA
VARIATIONS
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AERIAL MONITORING
AEROSOLS
AIR POLLUTION
ALTITUDE
CHALCOGENIDES
CHEMICAL EFFLUENTS
COLLOIDS
DISPERSIONS
ENVIRONMENT
HYDROCARBONS
METEOROLOGY
MIDWEST REGION
MISSOURI
MONITORING
NITROGEN COMPOUNDS
NITROGEN OXIDES
NORTH AMERICA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
OZONE
PARTICLE SIZE
PLUMES
POLLUTION
SAMPLING
SIZE
SOLS
SULFATES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TIME DEPENDENCE
URBAN AREAS
USA
VARIATIONS