The origin of the highest O 3 episodes in Spain Xavier Querol & Andrés Alastuey (on behalf of the Spanish O 3 Working Group) Institute of Environmental Assessment and Water research, IDAEA-CSIC EMEP-WGE Joint meeting , September 13-16, 2016 N. Hourly exceedances 180 μgO 3 /m 3 300 250 200 150 100 50 0
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The origin of the highest O3 episodes in Spain
Xavier Querol & Andrés Alastuey (on behalf of the Spanish O3 Working Group) Institute of Environmental Assessment and Water research, IDAEA-CSIC
EMEP-WGE Joint meeting , September 13-16, 2016
N. H
ou
rly excee
dan
ces 1
80
µgO
3 /m3
300
250
200
150
100
50
0
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id aidæid aidid aidæContents and objectives
• Analysis of 2000-2015 O3 data in Spain (245 sites) • Focus in NE Spain (N of Barcelona) with a field
campaign on July 2015
• Identifying the origin of the highest O3 episodes (>180µg/m3, hourly)
The results presented here are from one published paper and another one in preparation: ON THE ORIGIN OF THE HIGHEST OZONE EPISODES IN SPAIN Querol X.1, Alastuey A.1, Reche C.1 Orio A.2, Pallares M.2, Reina F.2, Dieguez JJ.3, Mantilla E.3, Escudero M.4, Alonso L.5, Gangoiti G.5, Millán M.3
1IDAEA-CSIC, 2MAGRAMA, 3CEAM, 4UNIZAR, 5UPV/EHU. Science of the Total Environment 572 (2016) 379–389
ON THE ORIGIN OF THE HIGHEST OZONE EPISODES IN CATALONIA, NE SPAIN Querol X.1, Alastuey A.1, Minguillón M.C.1, Amato F.1, Reche C.1, Viana M.1, Karanasiou A.1, Rivas I.1, Pérez N.1, Ripoll A.1, Brines M.1, Ahn K.-H.2, Lee H.-K.2, Eun H.-R.2, Park Y.-H.2, Escudero M.2,Beddows N.4, Harrison R.M.4, Bertrand A.5, Temime-Rousell B.5, Marchand N.5, Soler R.M.6, Millán M.7
1IDAEA-CSIC, 2Hanyang University South Korea, , 3UNIZAR, 4University of Birmingham, UK, 5CNRS-Marseille, France, 6UB, 7CEAM
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id aidæid aidid aidæ2000-2015 ozone episodes in Spain
• The highest O3 episodes (>180µg/m3 hourly O3) have both regional-long range transport and regional-local components, the latter being prevalent in specific periods, and occur mostly only in 7 areas of Spain
• We showed that using AQ data we can determine when the latter is prevalent • To evaluate possible effect of mitigation actions for these intense pollution episodes we need to:
• Be able to forecast the episodes of synoptic stagnation dominated by vertical recirculation cycles (Millán et al., 1997 and 2000)
• Carrying out sensitivity analysis for abatement of NOx and AVOCs for these specifically • Obviously the O3 problem is not only concerned to the exceedances of the information threshold
value, but also the human protection and AOT40 targets. These are exceeded around Madrid and in the Southern and Mediterranean sides
• The fact that we found a clear OMI 2005-2015 NO2 decrease at regional scale with low effect on mean regional O3 (constantly high along the period) points to the complexity of abating mean O3 levels, but we should study also the peak episodes