1.   Impact of transboundary transport on surface ozone pollution in Poland in 2012 and 2013
Joanna Struzewska
Warsaw University of Technology
Jacek W. Kaminski, EcoForecast Foundation
Pawel Durka, EcoForecast Foundation
Karol Szymankiewicz, Warsaw University of Technology
Wspomaganie systemu oceny jakości powietrza z użyciem modelowania w zakresie ozonu troposferycznego dla lat 2012 i Praca wykonana na zlecenie Głównego Inspektoratu Ochrony Środowiska.

2. Outline Ozone assessment in Poland in 2012 and 2013
GEM-AQ model description and configuration
Emission data processing
Modelling results evaluation
Trasboundary impact on ozone exposure diagnostics
Summary

3. Ozone assessment in Poland
Responsible institution - National Inspectorate for Environmental Protection
Modelling centre: Warsaw University of Technology (Department of Environmental Engineering) + EcoForecast Foundation
2012, 2013
Modelling results on national scale (in two resolutions – 15km and 5 km) delivered to VIEPs by the end of March next year
Impact of transboundary transport assessed at 15km resolution

4. GEM-AQ model description 1/2
GEM-AQ developed by the Multiscale Air Quality Network coordinated by York University in Canada
Host meteorological model – the Global Environmental Multiscale (GEM) (Côté, et al., 1998) – Canadian operational weather forecast model
Tracer transport, vertical diffusion and deep convection
Gas phase chemistry
Photodissociation rates – on-line
Wet chemistry
Aerosol chemistry and physics

5. GEM-AQ model description 2/2
On-line coupling
Gas phase chemistry
Extended ADOM II
52 chemical species
VOC - lumped molecular approach
116 chemical reactions, 19 photochemical reactions
Dry and wet removal
Aerosol module
Aerosol chemistry and physics based on CAM (Gong, 2003)
5 chemical types (OC, BC, sulphates, sea salt, dust)
12 size bins m
Heterogeneous reactions
Advection and diffusion as for water vapour in the host meteorological model

6. GEM-AQ model configuration
28 vertical layers up to 10 hPa
Resolution: deg global variable grid - core over Central Europe, deg nested grid over Poland
Timestep:
450 sec – global simulation
120 sec – nested simulation
Objective Analysis from CMC every 12 hours
Output for nested simulation – every hour

7. Anthropogenic emission
EMEP inventory
All reported species (SOx, NOx, VOC, CO, PMs, NH3)
EMEP domain – MERCATOR 0.5ox0.5o
SNAP (01-10)
Annual average
Unit: [Mg(species)/cell]
Ozone assessment 2012  inventory valid for 2010
Ozone assessment 2013  inventory valid for 2011

8. Emission flux relocation
SNAP7
SNAP2
NO2 – SNAP07

9. DeltaTool – daily maximum scatterplot
2012
2013

10. DeltaTool – Taylor diagram
2012
2013

11. DeltaTool – Target plot
2012
2013

12. Transboundary transport
No anthropogenic emissions over Poland
Measures
AD = ZeroPL – Base_run
RD = AD / Base_run *100%

13. Number of days < 120 μg/m3
2012
2013

14. SOMO35
2012
2013

15. AOT40
2012
2013

16. Ozone episodes 27.04– 3.05 7 Local production Inflow from the west 24%
2012
days
Inflow direction
% LTO
% AOT40
% SOMO35
27.04– 3.05 7
Local production
Inflow from the west
24% 7% 8%
18–24.05
Inflow from the west, south-west and south,
13% 6%
26–31.07 6
10%
12% 5%
1–6.08
Inflow from teh west
11% –
19–24.08
Local production + inflow 9%
Sum 32
62%
32%
30%
2013
days
Inflow direction
% LTO
% AOT40
% SOMO35
26–29.07 4
Western inflow
20%
11% 5%
5–8.08
Local production
South-western inflow
17% -
17–18.08 2 8% 3%
Sum 10
45%
13%

17. Near surface temperature

18. Summary
Modelling results meet model accuracy requirements defined in the 2008/50/EC Directive
Different direction of the impact of transboundary transport on ozone pollution in 2012 and 2013
Highest transboundary impact along borders and southern direction
In 2012 role of country emissions more important
Based on measurements:
In 2012 highest number of regional scale photochemical episodes over Poland (32 days in 2012 and 10 days in 2013)
Highest number of information threshold exceedings in 2013
Level of exposure similar – higher ozone background in 2013

19. Thank You