1. 1 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 Air pollution by ozone in Europe during the summer 2012 & comparison with previous years (preliminary results) Libor Černikovský, Blanka Krejčí Czech Hydrometeorological Institute, Czech Republic ETC/ACM consortium partner Maps: Vladimíra Volná, CHMI

2. 2 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 Legislation Under Directive 2002/3/EC MS shall provide: monthly data: before the end of the following month information on the exceedance of –information threshold, 1h max > 180 µg/m 3 –alert threshold, 1h max > 240 µg/m 3 April – September data: not later than 31 st October –information on the exceedances of long-term objective for the protection of human health, 8h daily max > 120 µg/m 3 –1h monthly maximums for all stations

3. 3 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 QA/QC on delivered information ETC/ACM, under the contract to the EEA, manages the monthly and summer ozone exceedances data flow. The basic syntax check on the delivered data is made by GDEM automatically and a quality report is generated directly in the CDR delivery envelope. The detailed check on inconsistencies & potential errors is made by ETC/ACC during data processing monthly. The data suppliers are asked to correct inconsistencies and errors, i. e. upload amended reports, in way of feedback reports in CDR. Complete list of stations operational during summer 2012 in summary file is appreciated.

4. 4 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 Preliminary results Summary overview on 1-hour thresholds exceedances is published monthly. Following preliminary results are based on data received before 24 th October 2012, i. e. partly without September data. The information describing the situation during the summer is based on tentatively validated and non-validated monitoring data and hence should be regarded as preliminary (the level and extent of validation is not reported by the countries).

5. 5 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 2180 in 2012 45 % urban 22 % suburban 15 % rural 10 % r. background 8 % unknown Stations

6. 6 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 Exceedances of the information threshold total number of days for period April– August 2012

7. 7 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 Exceedances of the alert threshold total number of days for period April– August 2012

8. 8 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 Distribution of exceedances 2004–2012 June July

9. 9 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 Summers 2011 and 2012

10. 10 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 Summers 2003 and 2012

11. 11 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 Summer report tight deadlines: –31 October for data delivery –30 November: 1 st draft delivery to EEA –15 December: final draft delivery to EEA  report’s publication – spring 2013 provisional non-validated data used summer reports available on EEA web page http://www.eea.europa.eu/maps/ozone/compare/summer- reporting-under-directive-2002-3-ec http://www.eea.europa.eu/maps/ozone/compare/summer- reporting-under-directive-2002-3-ec

12. 12 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 Comparison with previous years 1990–2012 All available stations divided into 4 regions, 1997–2012 Stations with long-term series 1990–2012, AirBase: 1990–2010, SOR data 2011–2012 Selected O 3 time series that included more than 90 % of measured data during the summers Processing for stations, which reported at least one exceedance, observed during the warm term (April – September) => Number of days with 1-hour concentration > 180 & 240 µg.m -3 (information and alert threshold) => Number of days with maximum daily 8-hour concentration >120 µg.m -3 (Long-term objective - LTO - for the protection of human health. Target value - TV - is exceeded when the LTO has been exceeded at a particular station more than 25 times per calendar year, averaged over three years)

13. 13 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 „Historical“ data... no changes? Annual changes in the database Every year changes in the published results – SOR data submitted during the summer season and data provided to the Airbase are not the same data sets. Adding historical data to Airbase E.g. during last year many historical O 3 value series were added.

14. 14 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 Overview of exceedances observed during the year’s summer seasons in Europe 1997–2012 (1) Total number of stations with ozone measurement (2) The number and percentage of stations at which at least one threshold exceedance was observed; fifth column: percentage of stations with information threshold exceedance at which alert threshold exceedance were also observed (3) The number of calendar days on which at least one exceedance of thresholds was observed Information / alert threshold exceedances (provisional data for 2011–2012)

15. 15 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 Overview of exceedances observed during the year’s summer seasons in Europe 1997–2011 Long-term objective for the protection of human health exceedances (LTO), TV (when the LTO has been exceeded > 25 times per calendar year) (provisional data for 2011) (1) Total number of stations with ozone measurement (2) The number and percentage of stations at which at least one threshold exceedance was observed; fifth column: percentage of stations with information threshold exceedance at which alert threshold exceedance were also observed (3) The number of calendar days on which at least one exceedance of thresholds was observed

16. 16 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 European ozone regions 4 regions according to the impact of climatic conditions on ozone concentrations: Northern Europe North-western Europe Central and eastern Europe Mediterranean area

17. 17 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 Regional average number of exceedances per station during the summer for stations that reported at least one exceedance To illustrate climatic differences among the groups of countries and also inter-annual variations, the graphs includes the average summer temperatures of selected meteorological stations representing a specific region. However, temperature is clearly not the only predictor of ground-level ozone concentrations. Information threshold exceedances Number of days with 1-hour concentration > 180 µg.m -3

18. 18 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 Long-term objective for the protection of human health exceedances Number of days with maximum daily 8-hour concentration >120 µg.m -3 (target value for the protection of human health) Regional average number of exceedances per station during the summer for stations that reported at least one exceedance ?

19. 19 Černikovský, Krejčí, Volná (ETC/ACM): Air pollution by ozone in Europe during the summer 2012 & comparison with previous years 17th EIONET Workshop on Air Quality Management and Assessment, Madrid, Spain, 25-26 October, 2012 Thank you for attention...