1. TFIAM, Haarlem, The Netherlands, 7-9 May 2003 UK Integrated Assessment Model (UKIAM) T.Oxley, H.ApSimon, A.Dore, J.Hall, E.Heywood, T.Gonzales del Campo & R.Warren

2. TFIAM, Haarlem, The Netherlands, 7-9 May 2003 COLLABORATING INSTITUTIONS Dept. Environmental Science & Technology, Imperial College London –Integration and Abatement Strategy modelling Centre for Ecology & Hydrology (CEH), Edinburgh Research Station –Atmospheric Transport & Deposition CEH, Monks Wood, Cambridgeshire –Ecosystem Critical Loads & Exceedances CEH, Wallingford, Oxfordshire –ANC & Target Loads Functions for freshwaters Entec UK Ltd –Emissions Data & Cost-curve generation

3. TFIAM, Haarlem, The Netherlands, 7-9 May 2003

4. SPATIAL RESOLUTION

5. TFIAM, Haarlem, The Netherlands, 7-9 May 2003

6. OPTIMISATION PROCESSING

7. TFIAM, Haarlem, The Netherlands, 7-9 May 2003 OPTIMISATION MODES Deposition –Direct effect of abatement measures Accumulated Exceedance –Indirect effect of abatement; ecosystem specific Human Exposure –Primary & secondary particulates (PM10); ecosystem independent Acid Neutralising Capacity –Target Load Functions; freshwater only

8. TFIAM, Haarlem, The Netherlands, 7-9 May 2003 MODEL OUTPUTS (Examples)

9. TFIAM, Haarlem, The Netherlands, 7-9 May 2003 Deposition Maps

10. TFIAM, Haarlem, The Netherlands, 7-9 May 2003 Exceedance Maps

11. TFIAM, Haarlem, The Netherlands, 7-9 May 2003 Individual abatement measures

12. TFIAM, Haarlem, The Netherlands, 7-9 May 2003

13. DEVELOPMENT STATUS (Summary) Combined ‘scenario’ and ‘optimisation’ modes Area, point & national sources recognised SOx, NOx, NH3 and primary & secondary PM10 Sector specific emissions/cost-curves Acidification, eutrophication & exposure optimisation ANC Target Load Functions incorporated User-specified weightings for scenario definition Generic design facilitates nesting of models

14. TFIAM, Haarlem, The Netherlands, 7-9 May 2003 NEW DATASET AVAILABILITY Emissions & Cost-curves (May 2003) – Entec UK Deposition Data (Summer 2003) – CEH Edinburgh Critical Loads (Summer 2003) – CEH Monks Wood Ammonia Cost-curves (Year End 2003) – NARSES

15. TFIAM, Haarlem, The Netherlands, 7-9 May 2003 ONGOING DEVELOPMENT Dynamic Modelling (ANC Target Load Functions) Incorporation of in-square NH3 deposition dynamics Implementation of Critical Loads FUTURE DEVELOPMENT: Dynamic Cost-curves (multi-pollutant & delay time) Incorporation of SSSI’s into optimisation processing Incorporation of VOC’s and Ozone