Download - Scottish Pollution Mapping
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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 PM10
• Refocusing efforts
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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/cat09/0709241126_dd12005mapsrep_v2.pdf
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Examples of Mapping Results
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Measured annual mean NOx (µg m-3, as NO2)
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O x (
µg
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, as N
O2)
AURN Background (Scottish model)AURN Roadside (Scottish model)Verification sites Background (Scottish model)Verification sites Roadside (Scottish model)AURN Background (National model)AURN Roadside (National model)y = xy = x + 30%y = x - 30%
Verification of Scottish NOx background and roadside
annual mean 2005 model (g m‑3 as NO2)
Scottish model NOx background annual mean 2005 map for Scotland (g m‑3 as NO2)
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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 PM10 and PM2.5
– Scotland specific verification for other pollutants
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Model developments
• Improvements and changes to Models– PM10
− 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!
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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: PM10, PM2.5, NOx and NO2
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Questions…
[email protected]@aeat.co.uk
http://www.airquality.co.uk/archive/reports/cat09/0709241126_dd12005mapsrep_v2.pdf