A field study of pollutant deposition in radiation fog
Conference
·
· Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)
OSTI ID:5655256
Deposition during fog episodes can make a significant contribution to the overall flux of pollutants in certain ecosystems. Furthermore, when atmospheric stagnation prevents normal ventilation in a region, fog deposition may become the main route of pollutant removal. Fogs can consequently exert dominant control over pollutant levels in certain atmospheres. The southern San Joaquin Valley (SJV) of California is a region prone to wintertime episodes of atmospheric stagnation. These lead to elevated pollutant concentrations and/or dense, widespread fogs. Major oil-recovery operations plus widespread agricultural and livestock feeding activities are important sources of SO/sub 2/, NO/sub X/ and NH/sub 3/ in the valley. A multifaceted program of field monitoring was conducted in the SJV during the winter 1984-1985, focusing on aspects of pollutant scavenging and removal in the fog-laden atmosphere. Concentrations of major species were measured in gas, dry aerosol and fogwater phases. In addition, depositional fluxes were monitored by surrogate-surface methods. These measurements were employed to directly assess the magnitude of removal enhancement by fog.
- Research Organization:
- Dept. of Environmental Engineering Science, California Institute of Technology, Pasadena, CA 91125
- OSTI ID:
- 5655256
- Conference Information:
- Journal Name: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States) Journal Volume: 31:2
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:5888936
Related Subjects
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACID RAIN
AEROSOLS
AIR POLLUTION MONITORING
AIR QUALITY
AMMONIA
ATMOSPHERIC CHEMISTRY
ATMOSPHERIC PRECIPITATIONS
CALIFORNIA
CHALCOGENIDES
CHEMISTRY
COLLOIDS
DEPOSITION
DISPERSIONS
ENVIRONMENTAL QUALITY
FEDERAL REGION IX
FOG
HYDRIDES
HYDROGEN COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
POLLUTANTS
PRECIPITATION SCAVENGING
RAIN
SEPARATION PROCESSES
SOLS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
USA
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACID RAIN
AEROSOLS
AIR POLLUTION MONITORING
AIR QUALITY
AMMONIA
ATMOSPHERIC CHEMISTRY
ATMOSPHERIC PRECIPITATIONS
CALIFORNIA
CHALCOGENIDES
CHEMISTRY
COLLOIDS
DEPOSITION
DISPERSIONS
ENVIRONMENTAL QUALITY
FEDERAL REGION IX
FOG
HYDRIDES
HYDROGEN COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
POLLUTANTS
PRECIPITATION SCAVENGING
RAIN
SEPARATION PROCESSES
SOLS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
USA