Analysis of the 1987 Southern California Air Quality Study (SCAQS) sulfur hexafluoride atmospheric tracer data. Final report

Technical Report · Tue Oct 01 04:00:00 EDT 1991

OSTI ID:6701454

Shair, F H

Eight sets of atmospheric tracer experiment data obtained during the 1987 Southern California Air Quality Study (SCAQS) are analyzed by mass balance and qualitative agreement with surface winds gathered during the same period. The sulfur hexafluoride tracer releases done near downtown Los Angeles reveal aspects of the complexity of the atmospheric emission transport from the location. The total material release of sulfur hexafluoride can be accounted for by mass balancing. The mass balances are used to examine the residence time of the tracer in the basin. The residence time for the sulfur hexafluoride tracer released from Vernon CA is 10 hours in the summer, and exceeds 24 hours for the fall. The primary exit route of the sulfur hexafluoride tracer during the summer releases was the San Fernando Valley to the northwest of downtown. The surface-level diagnostic wind model (DWM) was made operational on a PC.

• Research Organization: California Inst. of Tech., Pasadena, CA (United States). Dept. of Chemical and Environmental Engineering
• OSTI ID: 6701454
• Report Number(s): PB-93-146470/XAB; CNN: ARB-A932-051
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AEROSOLS
AIR POLLUTION
AIR QUALITY
ATMOSPHERIC CIRCULATION
BOUNDARY LAYERS
CALIFORNIA
COLLOIDS
DATA
DEVELOPED COUNTRIES
DISPERSIONS
ELEMENTS
EMISSION
ENVIRONMENTAL QUALITY
ENVIRONMENTAL TRANSPORT
HYDROCARBONS
INFORMATION
ISOTOPE APPLICATIONS
LAYERS
LOS ANGELES
MASS TRANSFER
MATHEMATICAL MODELS
METEOROLOGY
NONMETALS
NORTH AMERICA
NUMERICAL DATA
ORGANIC COMPOUNDS
POLLUTION
SEASONAL VARIATIONS
SOLS
STATISTICAL DATA
SULFUR
TRACER TECHNIQUES
TURBULENCE
URBAN AREAS
USA
VARIATIONS
VELOCITY
WIND