Download Health Risks of Ozone from Long-range Transboundary Air by WHO Regional Office for Europe PDF

By WHO Regional Office for Europe

Ozone is a hugely oxidative compound shaped within the decrease surroundings (from gases originating to a wide quantity from anthropogenic assets) by means of photochemistry pushed through sunlight radiation. as a result of its hugely reactive chemical homes, ozone is damaging to plants, fabrics and human well-being. within the troposphere, ozone is usually a good greenhouse gas.This record summarizes the result of a multidisciplinary research to evaluate the consequences of ozone on well-being. The research exhibits that ozone pollutants impacts the health and wellbeing of many of the populations of the WHO eu area, resulting in a variety of illnesses. the results comprise a few 21,000 untimely deaths every year in 25 international locations within the eu Union on and after days with excessive ozone degrees. present rules are usually not adequate to minimize ozone degrees within the zone or their influence within the subsequent decade.

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Additional info for Health Risks of Ozone from Long-range Transboundary Air Pollution (EURO Nonserial Publication)

Example text

Source: AirBase, © EEA, Copenhagen, 2008 (80). countries whose data are available in AirBase (only stations with data covering at least 75% of the period are included). While ozone concentrations (both annual means and daily values) tend to increase, the average annual mean for sulfur dioxide shows a strong downward trend until about 2000, followed by a flattening out (and even a small increase in the last year). Nitrogen dioxide and PM10 also show a downward trend (except for peaks in the high-percentile short-term level in 1997 and 2003), but the relative as well as absolute concentration reduction for these pollutants is much less than for sulfur dioxide.

In most towns and cities in northwestern Europe, there are relatively few such episode days during most years and their number shows a great deal of variability from year to year. During the winter, periods of strongly depleted ozone levels are seen during winter smog days. Again, there are relatively few of these and their number shows significant year-on-year variability. There are no significant direct sources of ozone emission to the atmosphere and therefore all ground-level ozone has been formed in the atmosphere by sunlight-driven chemical reactions.

However, the new Member States would be 45% under the ceiling. While ozone precursor emissions from the EU Member States are generally expected to decline in the coming decades, emissions are likely to increase from other countries where less stringent emission controls are in place. Up to 2020, NOx and VOC emissions from the Parties to the Convention on LRTAP that do not belong to the EU are likely to increase by 15–20% compared to 2000 (Fig. 7) (71). Even larger increases have to be anticipated for emissions from international maritime shipping (72).

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