Czech Hydrometeorological Institute EMEP case study on heavy metal pollution assessment Milan Váňa

1. Czech Hydrometeorological Institute EMEP case study on heavy metal pollution assessment Milan Váňa www.chmi.cz/uoco/struct/odd/ook/indexe.html EMEP TFMM meeting, 11-13.5.2011, Zurich

2. Overview Aim: Complex analysis of factors affecting quality of the assessment of heavy metal pollution levels in the Czech Republic Focused on : Cadmium, Arsenic

3. General benefit for CR To use the modelling capacity of MSC-E for more detailed analyzes of measured data from the Czech national monitoring network

4. Bilateral meeting in Moscow 14-16. April 2010 • Discussions concerning the aims of the project from the point of view of MSC-E and CHMI • Detailed discussion about technical issues (data exchange, experts etc.) • Time table adopted

5. Emission • Gridded emission data with 5x5 km resolution will be available NFR categories – reported July 2010

6. Data reporting • Air concentration – data reported – Feb 2010 • Precipitation – data reported – Feb 2010 • Throughfall – data reported – Feb 2010 • Metadata about stations – March 2010 • Meteorological data from the Czech network – May 2010 • Soil data reported – Sept 2010

7. 2010 First results presented during 2010 TFMM meeting in Larnaca

9. - in precipitation - in air

10. Bilateral meeting in Moscow 2-3. March 2011 • Presentation and discussions of preliminary results (presented by Ilia) • Detailed discussion about technical issues (data exchange, experts etc.) • Next steps

11. Main conclusions: • List of priority stations is generally fine. However, one station (Sous) should be removed from the list because measured concentrations in air do not correspond to background/rural levels. • Modelled concentrations in air agree reasonably well with observations, except for some episodes. • Significant discrepancies between modelled and measured levels at near-border stations can be caused by poor spatial resolution of the emission data in the neighbouring countries. • Modelled wet deposition fluxes are significantly lower than the observed ones. The main discrepancies between modelled and observed levels took place in short-term (e.g., weekly) episodes. Understanding of the reasons requires further analysis. • Mosses can be used in the case study as supplementary data to evaluate spatial distribution and, possibly, long-term trends

12. Next steps • Communicate with neghbouring countries about emissions with fine resolution • Avialability of results from national or bilateral projects (Black triangle, Ostrava- Katovice) • Information about critical loads – will be prepared in 2011

13. Planned outputs • Concentrations and depositions with high resolution • Contribution of neighbouring countries to pollution levels in The Czech Republic • Contribution of source categories to pollution levels • Contribution of large point sources to pollution levels in the Czech republic • Contribution of big cities to pollution levels in the Czech republic (Praha, Ostrava region) • Other – subject of further development

14. Conclusion Complex analysis of factors affecting quality of the assessment of heavy metal pollution levels in the Czech Republic: - brings us more detailed info about the HM behavior -give us opportunities to precise the measures for improvement of air quality strategies and policy in the polluted areas.