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

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

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

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

SPATIAL RESOLUTION

UKIAM COMPONENT SPATIAL RESOLUTION

Area sources Aggregated from 1km to administrative boundaries (county)

Emissions Major point sources Geo-referenced within counties

NOx, SOx, PM10 Administrative boundaries (county)

Cost-curves NH3 10km (NARSES)

Deposition All pollutants 5km (FRAME)

Ecosystem Critical Loads

Ecosystem specific (woodland grassland, heathland, freshwater 1km

Exceedances Acid & Eutrophication 5km (AXEED/NUTE)

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

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

OPTIMISATION PROCESSING

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

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

MODEL OUTPUTS(Examples)

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

Deposition Maps

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

Exceedance Maps

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

Individual abatement measures

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

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

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

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

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