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原文传递 Analysis of Weekday/Weekend Differences in Ambient Air Quality and Meteorology in the South Coast Air Basin

题名：	Analysis of Weekday/Weekend Differences in Ambient Air Quality and Meteorology in the South Coast Air Basin
作者：	Warren Blier, Arthur M. Winer
关键词：	Day-of-the-Week, Weekend Effect, Ozone, Carryover, NO,, NOj, NMHC, aerosols, ambient temperature
摘要：	The second study to understand the day-of-the-week effects where weekend days have higher ozone concentrations coincident with lower precursor emissions suggests that carryover of pollutants from Friday evening to Saturday may be of greater significance than that occurring during other days of the week. These limited ground observations suggest a weak carryover effect for NOx and NO2. During 1994/95 Saturdays and Sundays, concentration reductions of non-methane hydrocarbons (NMHC) and NO, coincide with increases in ozone. However, 1986-96 ozone concentrations have declined significantly coincident with significant reductions in levels of NMHC and NO,. Day-of-the-week effect does not provide evidence that further NO, control Is counterproductive to further ozone reductions. Further exploring if human activities generate day-of-the-week influences in meteorological parameters, UCLA investigators noted aerosol concentrations and ambient temperatures have a weak day-of-the-week Influence. They further noted that recent years seem to indicate a shift to later and shorter ozone seasons and a shift to Sunday being the highest ozone peak day-of-the-week.
报告类型：	科技报告