scottish pollution mapping
DESCRIPTION
Scottish Pollution Mapping. Nicola Brophy [email protected]. 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 - PowerPoint PPT PresentationTRANSCRIPT
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
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
Examples of Mapping Results
0
20
40
60
80
100
120
140
160
180
0 20 40 60 80 100 120 140 160 180
Measured annual mean NOx (µg m-3, as NO2)
Mo
dell
ed
an
nu
al
mea
n N
O x (
µg
m-3
, 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)
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
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!
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
Questions…
[email protected]@aeat.co.uk
http://www.airquality.co.uk/archive/reports/cat09/0709241126_dd12005mapsrep_v2.pdf