Scottish Pollution Mapping Nicola Brophy nicola brophyaeat co

Scottish Pollution Mapping Nicola Brophy nicola. brophy@aeat. co. uk

Background • AEA’s Pollution Climate Mapping team produce UK maps on behalf of Defra and the Devolved Administrations • 2004 & 2005 – Scotland Specific – Scottish meteorological data – Scotland only AURN sites for calibration of the model • Mixed results – Particularly for gravimetric PM 10 • Refocusing efforts

Introduction to the Model Components of the model: • Point source model – Environment Agency and SEPA database • Area source model – Dispersion kernel • Long range transport and secondary inorganic aerosols http: //www. airquality. co. uk/archive/reports/cat 09/0709241126_dd 12005 mapsrep_v 2. pdf

Examples of Mapping Results Verification of Scottish NOx background and roadside annual mean 2005 model ( g m‑ 3 as NO 2) Scottish model NOx background annual mean 2005 map for Scotland ( g m‑ 3 as NO 2)

Further Work on Scottish Mapping Project • 2006 – Scotland specific verification • 2007 – Scotland specific gravimetric particulate maps due to increased number of sites – 1 year only – To include PM 10 and PM 2. 5 – Scotland specific verification for other pollutants

Model developments • Improvements and changes to Models – PM 10 − − Residual concentrations reduced More certainty in sea salt concentrations Secondary inorganic aerosols Iron – Change to calibration − Singles relationship for calibration − Different types of dispersion kernels for differing land types – Biomass!

Biomass Burning • Government committed 15% of all energy to be from renewable sources by 2020 • Defra and the Scottish Government assessing the air quality risks from burning biomass • AEA developing projection maps for 2010, 2015 and 2020 • Scenarios – Uptake of 5 -7% biomass burning – Fuel replacement – Regionally specific variations • Pollutants: PM 10, PM 2. 5, NOx and NO 2

Questions… nicola. brophy@aeat. co. uk andrew. kent@aeat. co. uk http: //www. airquality. co. uk/archive/reports/cat 09/0709241126_dd 12005 mapsrep_v 2. pdf