N 261. Minutes 24 th AQUILA Meeting, Ispra, 22 and 23 June 2015

Transcription

1 Minutes 24 th AQUILA Meeting, Ispra, 22 and 23 June 2015 Participants: H. Åreskoug, E. Arkadi, M. Barbiere, I. Bešlić, M. Bilic, D. Centioli, L. Delaney, F. De Leeuw, V. Dézsi, T. Fraczkowski, M. Froehlich, M. Gabrysch, J. Geiger, J. Genberg, M. Gerboles, L. Grozdanovski, P. Hercog, O. Kracht, F. Lagler, P. Maetz, L. Marsteen, C. Matheeussen, J. Molis, C. Nordstroem, M. Parvanova, P. Pérez Ballesta, JP. Putaud, K. Sega, K. Sjoeberg, B. Stacey, J. Turšič, L. Turzanski, J. Walden, K. Wirtz, P. Woods, M. Yeomans. Item Topic 1. Welcome & approval of agenda A. Borowiak (AB) could not attend the meeting and was substituted by JP Putaud (JP) for the 24 th meeting. The agenda was approved with minor additions: Point 10: Experience with Excel Spreadsheets to calculate Uncertainties was postponed to next meeting. Point 11: presentation of the new AQUILA/CIRCA web pages was postponed to next meeting. Point 12: Update of CEN TC 264 was cancelled. 2. Adoption of minutes of the 23rd meeting The minutes are adopted with modifications of Point 6 requested by D. Centoli: Point 6: during the Italian PM intercomparisons organized in Italy, gravimetric methods showed a reproducibility of 8%, whereas the AMSs show a reproducibility of 9%. Several beta systems and TEOM show underestimation. AB sent the document on reporting measurement uncertainty to all AQUILA members. P. Quincey as deputy convenor of WG15 sent a doc on the AMS for PM measurements on State of accreditation: Point 17 on the revision of the document roles and responsibilities of an NRL was postponed. P. Woods (PW) asked about new documents availability. 3. Update on air quality policy. JP reported about the status of the draft EC Directive amending several Annexes of Directives 2004/107/EC and 2008/50/EC. The Ambient Air Quality Committee gave in March 2015 a positive opinion on the draft, with 2 delegations only (Germany and Luxembourg) rejecting it, and all others being explicitly or tacitly in favour. The draft directive is now under scrutiny. The written procedure for adoption (European Parliament and Council) can be launched from July 15, The new Directive will enter into force 20 days after its publication in the Official Journal.

2 The latest draft was not circulated to AQUILA but was publically available from Internet at the time of the meeting (later sent on June 30th). JP showed the modifications in both Directives relevant for AQUILA as marked by AB, which include: - Sub- and weekly sampling permitted in 2004/ Standards developed since 2008/50 are referenced instead of older standards - Quality systems reviewed every 5 years - Removal of reference to EN17025 or EN17043, replaced with relevant - Intercomparisons every 3 years minimum - NRLs must support work done by AQUILA - Section on mutual recognition of test reports is gone Comments to the current draft included: - PW thinks that Point (v) of Annex II should apply to all 8 pollutants regulated. - PW and M. Froehlich (MF) expressed negative appreciations regarding the current draft, stating that the version from November 2014 was more precise (reference to EN 17025, mutual recognition, ). They wondered where the corrections came from, and regret the absence of a representative of DG ENV Air Unit at the current AQUILA meeting. (JP to raise this issue in DG ENV the following week). - It was suggested sending a letter from AQUILA to DG ENV expressing anxiety at the current situation. The chair of AQUILA contacted to Marta Munoz who emphasized that the DG/ENV respect the expertise and dialog between AQUILA and like to continue the same way. The absence from the meeting was the delay of formal nomination after Daniela and problems in rescheduling the calendar. It was concluded that no problems with the relation of AQUILA and DG/ENV occur. 4. PM10 and PM2.5 inter-laboratory comparison exercise (ILC) in Ispra (March-April 2015) M. Barbiere presented this ILC, which involved 23 participants (among which 14 were accredited) from 19 countries with 22 PM2.5 samplers and 24 PM10 samplers (ca. 50% cooled). All participants submitted results (20 submitted more than 84% of the PM2.5 data, 19 submitted more than 85% of the PM2.5 data) but not always in time. Therefore, only preliminary results were available. Regarding ERLAP s results, the between sampler differences were 1.6 µg/m³ for PM2.5 and 2.2 µg/m³ for PM10, i.e. too large according to the EN The reasons for such differences (e.g. true gradient between the corners of the sampling site) will be investigated. MF underlined that EN12341 default value for between sampler uncertainty is 0.67 µg/m³. J. Tursic asked if JRC s samplers were compared when running side by side not recently. Time series show reasonable agreements among all participants, with a few obvious outliers, mainly for PM10. Outliers will be defined using Grubbs test (99% confidence level). Next milestones in data processing include: Outliers determination end Sept., Draft report 15 Oct., and Final report 15 Nov. Feedback from participants:

3 - several attendees thanked the ERLAP team for the good organization and help during the course of this ILC. - MF asked for such ILC to be planned further in advance in the future - PW asked if there is any evidence about the effect of air transport on filter loadings: nobody had information about this. - B. Stacey (BS) asked for an evaluation of results in relation to the type (brand) of filter used. - The definition of the reference values was discussed. PW suggested to compare ERLAP data with the average among the best labs anyway. If ERLAP results are not used as references, will be used instead the consensus of accredited labs if no concentration gradient across the sampling site can be demonstrated, or the general consensus if concentration gradients can be highlighted. J. Geiger (JG) proposed to make use of the filters collected during this ILC to inter-compare analyses of PM components, e.g. metals, PAHs, organic and elemental carbon. Slovenia already analyzed ions, OC&EC, and PAHs in PM10. Croatia, Flanders (and Italy for metals only) are ready to participate. JG offered to compile and process data. Risks of losses and/or contamination for semivolatile species were discussed (JRC Pascual Perez Ballesta to circulate related papers). No other attendee expressed interest in participating. JP asked for interest in an OC&EC round robin test to be performed in 2016: 13 attendees were interested. K. Wirtz asked for effects for air transport to be checked in a specific analyse, fly, analyse,jw concluded that RG made excellent work and wished he could continue the work. 5. News from the CCQM GAWG JW summarised the output of the CCQM/GAWG meeting held on of April 2015, where BIPM proposed to establish a task group on O3 cross section data review. Hodges, Viallon, and Wielsgosz to draft terms of reference and timeline for the work of the task group and submit to the GAWG Chair. GAWG members who wish to join the ozone cross section task group shall approach Jin Seog Kim. The task Group Chair and Secretary will send out a call for external experts to join the Task Group. Frank de Leeuw (FdL) showed the impact of the O3 cross section change at the EU level. The systematic 2% increase in O3 concentrations leads to a large increase in the number of exceedances (> +30%) and AOT40 (+5 +30%), among others. The question of back- correcting historic O3 concentrations was raised. 6. Next JRC-WHO-AQUILA intercomparison exercises for inorganic gaseous pollutants: gas IE - 4th October 2015 (Langen) gas IE - 12th October 2015 (Ispra) fully booked gas IE - 19th October 2015 (Ispra) fully booked 7. Representativeness / Siting intercomparison: update & collaboration with FAIRMODE

4 O. Kracht (JRC) presented a model intercomparison exercise organised in the frame of FAIRMODE. Based on the same shared dataset, participants will have to determine stations spatial representativeness (SR). Outputs may range from geospatial descriptions of the SR area (spatial polygons, maps ) to qualitative descriptions. Timeline: - Feasibility study and survey (October July 2015). A survey through a questionnaire was launched to check the interest for this exercise, which was evaluated in Jan of 22 returned questionnaires expressed interest to participate (the questionnaire may be sent again to targeted groups FdL s list). Discussion started about which type of pollutants should be included in the dataset used in this exercise (possibly PM10, O3 and NO2). Late summer a report about the results and conclusion of the survey will be ready. - Preparation of shared datasets and Intercomparison exercise. 70 to 80% of the participants require air quality monitoring data, air quality modeling data, emission inventories, or meteorological data as inputs. The shared data set could be e.g. the 2012 IFDM Model results for Antwerp. 8. EMEP/TFMM trend assessment study FdL presented the plan of EMEP-TFMM for preparing an assessment on changes in ambient levels of air pollutants, in support to the CLRTAP Assessment Report The assessment is based on modelling studies and analysis of monitoring data. Annual and seasonal trends to be determined for three periods , , , based on EMEP and Airbase data. Analyses will be performed by MSC-E, MSC-W and EEA, supplemented with national activities/reports, using Mann- Kendall tests and Sen slopes. Trends in O3 (and precursors), PM (including N and S deposition), heavy metals and POPs will be evaluated New certification / equivalence tests: BS presented a proposal for AQUILA s position on the tests to be performed by manufacturers to demonstrate conformity with the requirements described in EN12341:2014 of the new PM10 and PM2.5 samplers. As the Type Approval of new samplers shall be mandatory to conform with the requirements of EN12341:2014, it is envisaged to propose an amendment of EN12341:2014 to include a type approval chapter based on verification of inlet design and performance requirements, since this is missing in the current version. BS will prepare a draft guidance from AQUILA. The field test prescribed could be the assessment of the between sampler uncertainty. 11. postponed 12. cancelled 13. Future workshops and conferences: no announcements 14. Next meeting proposed dates: of November 2015, sub-group Nov. The next AQUILA meeting was rescheduled on February 15 to 16. There is a parallel session with the FAIRMODE meeting. med later)

5 15. AOB: New CEN TC264 WG42 (sensors) established call for experts open now. WG 43 and 44 on modelling objectives and source apportionment have been established as well. EMRP and EMIPR projects: - KEY-VOCs - NH3 measurements: JW accepted invitation to be adviser on behalf of AQUILA 16. Visit of new ERLAP laboratories from 11:00 to 13:00