Download Air Pollution Modeling and Its Application XIII by S. Trivikrama Rao, Christian Hogrefe, Gopal Sistla, PDF

By S. Trivikrama Rao, Christian Hogrefe, Gopal Sistla, Shiang-Yuh Wu, Winston Hao (auth.), Sven-Erik Gryning, Ekaterina Batchvarova (eds.)

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Based on a trajectory analysis focused on two ozone events during NARE-93 (August 25 - 28, 1993), they suggested that the incidences ofhigh ground-Ievel ozone observed in this period over southern Nova Scotia were a result ofweakened stability at low levels to allow the mixing down of the ozone from aloft, a case of condition #2 in the introduction. 170 140 110 825 530 I 310 304 2Sl8 80 292 50 286 20 200 _ . ___ .. ~ v< aJ um"" U>PO) and b) temperature (K) at 20Z August 4 through AgawamNewburyport-Kejimkujik-HaJifax.

Pielke, RA and M. Uliasz. Use of meteorological models as input to regional and mesoscale air quality models - Limitations and strengths. Atmos. , Vol. 32, No. 8, 1998. pp 1255-1466. Systems Applications International. Users Guide to the Variable Grid Urban Airshed Model (UAM-V), San Rafael, CA, 1995. 1, February 12, 1997. html). F. y. Ku. Statistical characteristics of spectrally-decomposed ambient ozone time series data. wustl. edu/otag/reports). Y and RF. Henry. Dealing with the ozone non-attainment problem in the Eastern United States, Environ.

To a large extent, the efficiency analysis of the reduction measures shows coinciding results in the three different modelling regions. But they also put in evidence deviations that can be ascribed to the specific local emission profiles and intensities as well as to the specific local meteorological conditions in the episode. CONCLUSIONS The long-term and European-wide formulated emission reduction scenarios "Trend 2005" and especially its more ambitious variation, "Reduction 2005", are by far the most effective measures to reduce high ozone concentrations during the summer months.

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