Current twinning needs and expectations Normunds Kadiķis

1. Current twinning needs and expectations Normunds Kadiķis

2. Main responsibilitiesof LEGMA • Meteorological observations • Hydrological observations • Seismological observations • Air quality monitoring • Groundwater quantity and quality monitoring • Surface water quality monitoring • Monitoring of transboundary air pollution(EMEP, GAW, ICP-IM, etc.) • Provision of geological data and information • Provision of meteorological and hydrological forecasts and warnings • Provision of environmental data and information • Air, water and other environmental samples testing

3. Complex system of Environmental Quality Management Status of env. Monitoring quality and Scientific investigations Data its impactsStatistics bases Modelling Emissions and other causes Decision making at Environmental governmental and reports Actionsmunicipal level etc.Accounting Publications etc. Informing of society Raising of environmental awareness Involvement of stakeholders

4. Main modelling experience in LEGMA • Surface water hydrology • Urban air quality • Critical loads (acidificationand eutrophication of terrestrial ecosystems) • ...

5. LEGMA needs: Mandatory twinning component • Water quality modelling • Review of available experiences in water quality modelling in different EU countries for possibility to adapt them to Latvian conditions; • Analysis of existing and foreseen Latvian data availability and organisation for models' requirements; • Definition of target outputs from the modelling system; • Selection of the best suitable models for Latvia; • Identification of needs for new models; • Development of concept for water modelling system in Latvia.

7. Modelling process as a “black cat”

8. Modelling process as a “black box” Input Output

9. Modelling process as a “black box” Garbage Garbage

10. Modelling process as a “black box” Simple Rough

11. Modelling process as a “black box” Complex Sophisticated

12. What we would prefer? • A number of models starting from simple ones and proceeding to more sophisticated • First of all – inland surface water quality modelling tools • Separate modules` approach with respect to input data complexity desirable • Training

13. What could be useful byproducts? • Groundwater modelling tools • Improvement / elaboration of water quality related information systems • Other additional twinning components not already mentioned above Modelling of terrestrial and wetland ecosystems with emphasis on transboundary air pollution? Maybe, but not the main task and priority of this twinning project!

14. What we need regarding surface water modelling? • Calculation of pollutant’s concentrations at different points in the river; taking into account pollution from point sources and diffuse sources as well as hydrological conditions; • Calculation of pollutant’s concentrations at different points in the river; taking into account pollution from point sources and diffuse sources, hydrological conditions as well as self - purification capacity of the biota; • Calculation of diffuse pollution load to different points in the river; • Calculation of retained amount of nutrients in the water ecosystem taking into account both pollution from point sources and diffuse sources; • Calculation of pollution load brought by the river at different points, differentiating between pollution from point sources and diffuse sources and taking into account retained amount of nutrients in the water ecosystem; • Diffuse sources could include influence of sedimentation of air borne pollution separately; • Capability to present results in a GIS related maps.

15. Thanks!