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AIR
POLLUTION BY OZONE IN EUROPE in 1997 and Summer 1998 Topic Report no. 03/1999 part I - European Topic Centre on Air Quality By Frank de Leeuw, Rob Sluyter and Tim de Paus November 1998 |
This report was prepared under the supervision of:
Gabriel Kielland, Project Manager European Environment Agency
Download the report part I as PDF File (Approx. 200 Kb)
Table of contents |
EXCEEDANCE OF OZONE THRESHOLD VALUES IN EUROPE IN 1997.
2.1 Introduction
2.2 Data handling
3. SURVEY OF REPORTED DATA FOR 1997
4.1 Geographic coverage of monitoring stations
4.2 Annual statistics, 1997
4.3 Exceedances of thresholds in 1997
4.3.1 Exceedances of
the threshold value for protection of human health
4.3.2 Exceedances of
the threshold values for information and warning of the population
4.3.3 Exceedances of the
daily threshold value for protection of vegetation
4.3.4 Exceedance of
the hourly threshold value for protection of vegetation
4.5 Preliminary review of exceedances of the revised guidelines of WHO
4.6 Data reported for 1994-1997
5. CONCLUSIONS AND RECOMMENDATIONS
ANNEX I. Observed Exceedances and Annual Statistics
ANNEX II. Phenomenology of ozone
concentrations
INFORMATION DOCUMENT CONCERNING AIR POLLUTION BY OZONE
Overview of the situation in the European Union during the
1998 summer season (April-August)
3. SUMMARY OF DATA REPORTED FOR SUMMER 1998
3.1 Geographical distribution
3.2 Comparison with earlier years
This report is based upon data submitted to the European Commission under the Directive
92/72/EEC on air pollution by ozone. The Commission has requested the European Environment
Agency (EEA) to assist in this annual reporting by EU Member States since 1995. The
voluntary submission to the EEA of information on ozone levels by other European countries
made it possible to present an ozone assessment on a wider European scale. The data
collection in Phare countries was greatly facilitated by the Phare Topic Link on Air
Quality working as part of the European Topic Centre on Air Quality. Two separate reports,
one covering the year 1997, the other covering summer 1998, were originally produced by
the European Topic Centre on Air Quality and presented to the Member States in their
meeting of November 1998. The separate reports are available in electronic form on the EEA homepage on the Internet.
In this topic report, the annual 1997 and summer 1998 reports are reproduced in
their original form as presented to the Commission. The differences in available data, the
set of threshold values, the number of stations, the location of stations and the status
of the information (based on validated 1997 data and non-validated 1998 data) justifies
such an approach.
A major asset of this report is the timeliness of its delivery. The assessment of ozone episodes in 1998 was based upon data measured only two months earlier, while the normal production time from field measurements to validated assessment reports is rarely less than eighteen months. This timely reporting has only been possible with the support of the individual contact points within each Member State and the efficient communication established.
The harmful effects of tropospheric ozone on human health and well-being as well as damage to ecosystems is now being recognised as a major concern throughout the European Union. The European Community has taken steps to address the problem through Directive 92/72/EEC on ambient ozone, Directive 96/62/EEC on ambient air quality assessment and management (the Framework Directive), and development of an ozone daughter Directive, as well as the decision to develop a Community strategy for the reduction of ozone pollution. The measures necessary to abate pollution remain however a responsibility of each Member States and require political decisions with cost implications and consequences for the development of activities in the society. In this political process objective and reliable information on the extent and severity of the problem is essential.
It is the intention of EEA to continue a yearly reporting and assessment of the ground level ozone situation in Europe in close co-operation with the European Commission.
Gordon McInnes
Programme manager
This report summarises the annual information on ozone monitoring stations and exceedances of ozone threshold values during 1997 and gives a first evaluation of the observed exceedances of the thresholds during Summer 1998 (April-August). According to the Council Directive 92/72/EEC on air pollution by ozone, EU Member States have to provide information on ozone levels (statistical parameters, number and duration of exceedances of specified threshold values) on an annual basis before 1 July of the next year. Additionally, exceedances of the threshold values for population information and warning, as set in the Directive, must be reported to the Commission within one month after occurrence.
The analysis for the year 1997 presented in this report is based on information made available before 12 August 1998. By then, information for the calendar year 1997 was received from all Member States and, on a voluntary basis, from 5 other European countries (Switzerland, Czech Republic, Latvia, Norway and Poland). Information on the situation in Slovakia was received one month later; unfortunately too late to include fully in this report. All information has been submitted in computer readable form.
For the summer 1998-period, all 15 EU Member States provided information on the observed exceedances in time (the deadline for transmitting data was set at 20 September 1998), or indicated that no exceedances were observed. It is greatly appreciated by the Commission that Member States were able to transmit August exceedance data before the formal deadline as set in the Directive. Some countries submitted files which were not formatted according to the prescribed Commission requirements. These files by exception were converted at the European Topic Centre on Air Quality (ETC-AQ) for further processing.
From an evaluation of the exceedances and annual statistics, the following conclusions are drawn:
DISCLAIMER
THE INFORMATION PRESENTED IN PART II, INFORMATION
DOCUMENT CONCERNING AIR POLLUTION BY OZONE, IS PARTLY BASED ON
NON-VALIDATED MONITORING DATA AND HENCE SHOULD BE
REGARDED AS PRELIMINARY
For references, please go to https://www.eea.europa.eu/publications/C1I92-9167-123-1/page001.html or scan the QR code.
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