Summer 2009 ozone report (preliminary results)

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1 Summer 2009 ozone report (preliminary results) Libor Cernikovsky Czech Hydrometeorological Institute, Czech Republic ETC/ACC consortium partner Historical data evaluation: Blanka Krejci, CHMI Maps: Vladimira Volna, CHMI 14th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

2 Contents Legislation Reporting QA/QC on delivered information Preliminary results summer 2009 Near real-time ozone data exchange 14th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

3 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 14th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

4 Summer ozone reporting (SOR) Information available on the EEA web page The detailed definition of the information to be reported can be downloaded from the Reportnet Data Dictionary (DD) Countries are requested to deliver their monthly and summer reports to the Eionet Central Data Repository (CDR) according to the technical guidance A Reportnet Generic Data Exchange Module (GDEM) was introduced to facilitate the delivery and validation of ozone exceedance data. 14th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

5 QA/QC on delivered information ETC/ACC, 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 2009 in summary file is appreciated. 14th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

6 Preliminary results Summary overview on 1-hour thresholds exceedances is published monthly. Following preliminary results are based on data received before 2 nd October 2009, i. e. 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). 14th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

7 Location and type of stations 2170 in 2009, 2049 in 2008 > IT & RO 46 % urban 20 % suburban 16 % rural 9 % r. background 9 % unknown 14th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

8 Exceedances of the information threshold total number of days for period April August 2009 Note: FR, HU, LU... until July 14th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

9 Exceedances of the alert threshold total number of days for period April August 2009 Note: FR, HU, LU... until July 14th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

10 Distribution of exceedances 2009 Month Stations with exceedance (2) [number] [%] White columns refer to information, grey to alert threshold [%] No. of days with exceedance (3) Maximum observed one-hour concentration [µg/m3] Occurrence of exceedances (4) Average duration of exceedances [hour] April May June July August (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 exceedances were also observed (3) The number of calendar days on which at least one exceedance of thresholds was observed (4) Occurrence of exceedance is calculated as the average number of observed exceedances per country, i.e. the total number of exceedances for all stations divided by the total number of operational stations. Left column: averaged over all implemented stations, right figure: averaged over all stations which reported at least one exceedance 14th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

11 Distribution of exceedances June July 30 July 26 % alert 6.5 % info 14th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

12 Average number of exceedances per station in regions Northern Europe: IS, DK, NO, SE, FI, EE, LT, LV North-western Europe: UK, IE, NL, BE, LU, FR north of 45 latitude Central and eastern Europe: DE, PL, CZ, SK, HU, AT, CH, LI, RO, BG Mediterranean area: FR south of 45 latitude, PT, ES, IT, SI, HR, EL, BA, RS, ME, MK, AL, CY, MT Average number of exceedances per station Average maximum temperature [ C] N NW Central and E Mediterranean area Copenhagen Prague Paris Rome 14th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

13 Summers 2008 and th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

14 Summers 2003 and th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

15 Long-term objective for the protection of human health, 2008 Number of days on which ozone concentrations exceeded the LTO... daily maximum of 8-hour average > 120 µg/m 3, not to be exceeded more than 25 days per calendar year (averaged over three years and to be achieved where possible by 2010) 14th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

16 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 (summer 2008 report was published 24 March 2009) provisional non-validated data used summer reports available on EEA web page rchterm=ozone#c9=all&c7=en&b_start=0&c14=airpolluti onbyozone 14th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

17 Near real-time ozone data exchange EEA website with information about ozone pollution across Europe. The information is based on preliminary near real-time data provided by national and regional organisations. The AQ data used are preliminary, may change when they are validated hence they are not used for legal compliance reporting at present. The application provides map views, graphs and tables of ground-level ozone conditions. 14th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

18 NRT vs. SOR Country No. of stations (1) Stations with exceedance (2) [number] SOR No. of days with exceedance (3) Maximum observed one-hour concentration [µg/m3] No. of stations (1) Stations with exceedance (2) [number] NRT No. of days with exceedance (3) Maximum observed one-hour concentration [µg/m3] Differences due to QA/QC in SOR, lack of NRT data resubmission. Austria Belgium Bulgaria Cyprus < Czech Republic Denmark < < 180 Estonia < < 180 Finland < < 180 France Germany Greece < 180 Hungary Ireland < Italy Latvia < < 180 Lithuania < < 180 Luxembourg Malta Netherlands Poland < Portugal Romania n/a n/a n/a n/a n/a Slovak Republic Slovenia < 180 Spain Sweden < < 180 United Kingdom < 180 EU area Bosnia-Hercegovina < n/a n/a n/a n/a n/a Croatia < n/a n/a n/a n/a n/a Iceland < < 180 Liechtenstein < < 180 Macedonia, FYR of n/a n/a n/a n/a n/a Norway < Serbia < n/a n/a n/a n/a n/a Switzerland Turkey < < th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October, 2009 Whole area

19 NRT vs. SOR 2/2 Proposed improvement: automatic daily check of the delivered NRT data, i. e. set the quality assurance code to 'unvalid' and ask data supplier to confirm the value whether the quality_control is not 'approved data' and 1-hour ozone concentration fulfil selected criteria. The criteria could be for example as follows: 1-h conc. > 300 µg.m -3, values > 300 µg.m -3 are exceptional, several per season, concentrated in Mediterranean area, 1-h conc. > 180 µg.m -3 and the difference from the previous hour is higher than 60 µg.m -3, 1-h conc. is identical for at least 3 hours, the daily 1-hour max > 180 µg.m -3 for at least uninterrupted 10 days, 1-h conc. > 180 µg.m -3 during period October-March, values higher than 180 and 240 µg.m -3 occur mostly in June-July and May+August). 14th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,

20 Thank you for attention... 14th EIONET Workshop on Air Quality Management and Assessment, Warsaw, Poland, 5-6 October,