Application of a three-dimensional photochemical smog formation model to the Tokyo metropolitan area
Technical Report
·
OSTI ID:6283758
Relatively high O/sub 3/ concentrations were observed during an episode on July 16 and 17, 1981 in the Tokyo Metropolitan Area. The stagnant meteorological conditions which existed then were mainly caused by the local sea and land wind-circulation systems. To better understand the physical and chemical relationships at work during this particular episode, the SAI Urban Airshed Model (UAM) was applied. Vertical cross sections of simulated pollutant patterns are analyzed for the Tokyo domain, including the diurnal variation in the patterns. The effects of vertical meteorological conditions and the previous day's secondary pollutants are emphasized. The entrainment of O/sub 3/ and CARB from aloft on the second day of simulation was shown to have significant impact on the timing and location of the second day's maximum O/sub 3/. Limited field-observed data from aircraft for O/sub 3/ are compared with the simulated results.
- Research Organization:
- Environmental Protection Agency, Research Triangle Park, NC (USA). Atmospheric Sciences Research Lab.
- OSTI ID:
- 6283758
- Report Number(s):
- PB-87-195350/XAB; EPA-600/D-87/175
- Country of Publication:
- United States
- Language:
- English
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