Parliament on Friday banned cars without catalytic converters from driving when ozone concentrations reach certain levels, but rejected imposing automatic speed limits on high-smog days.
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Ozone concentrations in the lower stratosphere over Antarctica will increase by 5 10 percent by 2020 and return to pre-1980 levels by about 2060 2075.
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The study estimated that a one-third reduction in urban ozone concentrations would save roughly 4000 lives per year ( Bell et al ., 2004 ).
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If ozone concentrations on those three days average more than 85 parts per billion, a region falls out of compliance with the Clean Air Act.
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The hole, actually a broad area of low ozone concentrations caused by chlorofluorocarbons and other synthetic compounds that destroy ozone, forms in September and October.
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For example, the lower stratosphere has much higher ozone concentrations than the upper troposphere, but much lower water vapor concentrations, so appropriate cutoffs can be used.
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The NBP was designed to reduce NO x emissions during the warm summer months, referred to as the ozone season, when ground-level ozone concentrations are highest.
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The lower house of parliament Friday voted to ban motorists from driving cars without catalytic converters when ozone concentrations reach high levels in hot, smoggy periods.
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Care must be taken to prevent excessive ozone concentrations in the garden itself, or where it might be inhaled by the grower or his / her family.
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Under EU rules, EU countries must warn the public if ozone concentrations reach high levels and provide the Commission with information on monitoring stations, methods and results.
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