1 European Topic Centre on Air and Climate Change Air pollution by ozone in Europe in summer 2005 Preliminary results Libor Cernikovsky 10th EIONET Workshop on Air Quality Management and Assessment Vilnius, October, 2005

2 European Topic Centre on Air and Climate Change Legislation Under Directive 2002/3/EC MS shall provide: monthly data: before the end of the following month information on the exceedance of information and alert thresholds (1h max > 180 & 240 µg/m 3 ) April – September data: not later than 31st October information on the exceedances of long-term objective for the protection of human health (8h day-max > 120 µg/m 3 ) and 1h monthly maximums for all stations

3 European Topic Centre on Air and Climate Change Related information reporting forms, guidelines documents and other information available on the ETC/ACC web page and EEA web page

4 European Topic Centre on Air and Climate Change Monthly summary information published on the ETC/ACC web page

5 European Topic Centre on Air and Climate Change Summary table

6 European Topic Centre on Air and Climate Change Location and type of stations

7 European Topic Centre on Air and Climate Change Exceedances of the information threshold

8 European Topic Centre on Air and Climate Change Exceedances of the alert threshold

9 European Topic Centre on Air and Climate Change Preliminary results based on data received before 3rd October –incomplete August data –no September data in comparison with summer 2004 and previous summers

10 European Topic Centre on Air and Climate Change Distribution of exceedances

11 European Topic Centre on Air and Climate Change Number of days: information threshold Number of days on which at least one exceedance of the threshold value observed per country and per month – information threshold

12 European Topic Centre on Air and Climate Change Number of days: alert threshold

13 European Topic Centre on Air and Climate Change Percentage of stations reporting any exceedance

14 European Topic Centre on Air and Climate Change Frequency distribution of ozone concentrations in excess of the information threshold Box-Jenkins plots: –minimum value –25th and 75th percentile –maximum value

15 European Topic Centre on Air and Climate Change Average number of exceedance per station in regions North-western Europe: UK, IE, NL, BE, LU, FR north of latitude 45° Central and eastern Europe: DE, PL, CZ, SK, HU, AT, CH Southern Europe: south of latitude 45 °, PT, ES, IT, SI, GR, CY, MT Northern Europe: has not been included because of the low number of exceedances.

16 European Topic Centre on Air and Climate Change Summer report tight deadlines:... 31st October for data delivery... 23rd November delivery to to EEA impossible to process late delivered data ! provisional non-validated data used

17 European Topic Centre on Air and Climate Change Remarks on data All values are to be expressed in µg/m 3. The volume must be standardised at the following conditions of temperature and pressure: 293 K and 101,3 kPa The time is to be specified in Central European Time. Do not forget to make the data available to public view on CDR.

18 European Topic Centre on Air and Climate Change Summer reports available on EEA web page

19 European Topic Centre on Air and Climate Change Summer 2004 report – mistake ! Map 3.1 Number of days with exceedance of the information threshold Corrected EEA Technical report No 3/2005 is available on EEA web page.

20 European Topic Centre on Air and Climate Change Discussion Measured value of 180 and 240 µg/m 3. is not the threshold exceedance...