Presentation on theme: "Street Emission Ceilings (SEC) exercise Nicolas Moussiopoulos Aristotle University Thessaloniki Further team members: Dick van den Hout, TNO Liana Kalognomou,"— Presentation transcript:
Street Emission Ceilings (SEC) exercise Nicolas Moussiopoulos Aristotle University Thessaloniki Further team members: Dick van den Hout, TNO Liana Kalognomou, AUT Steinar Larssen, NILU Frank de Leeuw, RIVM Zissis Samaras, AUT/LAT
TFIAM - Amiens Objectives Quantifying the influence of urban and local emissions and other smaller scale effects on concentrations at urban hotspots as a basis for measures for attaining compliance. Development and pilot application of a methodology for this purpose, also with relevance to health issues.
TFIAM - Amiens Activities in 2003 Review of relevant existing studies (completed) Methodology for the determination of city and street typologies (contd in 2004) Analysis of excess concentrations (PM 10, PM 2.5, NO 2 ) at selected traffic air monitoring stations by comparing with the urban background (contd in 2004) Interpretation of the above analysis in terms of local emission estimates (contd in 2004) Demonstration of model application potential (contd in 2004)
TFIAM - Amiens Review of relevant existing studies Literature review including objectives and key findings of the most relevant studies and projects in the areas of: Field campaigns related to source apportionment Resuspension Monitoring data analysis and hotspot characteristics Modelling studies leading to source-receptor relationships Emission patterns in busy streets and associated key parameters
TFIAM - Amiens First tentative typology Quantification of Regional background contribution … using EMEP model results Urban background contribution … setting-up a city typology Hotspot contribution … setting-up a street typology
TFIAM - Amiens Towards a city typology Key parameters: Population (continuous) Region and local climate: –enclosed / open –West/North; Central; South Type of predominant emission sources: –major industry –no major industry
TFIAM - Amiens Towards a street typology Key parameters: Street emission (continuous) Average wind speed nearby: – 3.5 m/s –> 3.5 m/s Configuration: –Open rural terrain –Non-canyon streets in built-up areas –Wide street canyon (W/H > 1.5) –Narrow street canyon (W/H 1.5)
TFIAM - Amiens Illustration City typology defining f(pop ) Street typology defining g(emi) Urban background concentrations Population Urban background concentration Type C1a Type C1b Type C2a Type C2b Type C3a Type C3b Type C4a Type C4b Type C5a Type C5b Type C6a Type C6b Street concentrations Street emission Street concentration Type S1a Type S1b Type S2a Type S2b Type S3a Type S3b Type S4a Type S4b
TFIAM - Amiens From concentrations to SECs Concentration in a street of j-th type in a city of i-th type: c(C i,S j ) = c RBG + f i (pop) + g j (emi) Street emission ceiling for this street: SEC ij = G j ( c LV – [c RBG + f i (pop)] )
TFIAM - Amiens Analysis of excess concentrations The aim of this subtask is to: contribute to knowledge of (relative) emission factors for vehicles, by comparing PM and NO x concentrations, a.f.o. vehicle distribution in traffic contribute to analysis of the road dust resuspension source, by comparing PM 2.5, PM 10 and NO x concentrations, together with meteo data provide a basis for model-measurement comparisons / model validation.
TFIAM - Amiens Analysis of excess concentrations Select station pairs deltaC (hotspot – urban background), –time of day –weekend/working day –season compare deltaC at the various stations, Concentration ratios explain differences in terms of traffic, meteo, strength of resuspension source,..
TFIAM - Amiens Progress of data analysis Up to now 6 stations pairs have been analysed: –Hornsgatan, Stockholm –Frankfurter Allee, Berlin –Marylebone Road, London –Ermou,Thessaloniki –Skårersletta, Oslo –Vrsovice, Prague Other possible candidates: –Madrid (though traffic data is still not available) –Paris (as above) –Copenhagen (in collaboration with NERI) –Helsinki
TFIAM - Amiens Hornsgatan, Stockholm
TFIAM - Amiens Frankfurter Allee, Berlin
TFIAM - Amiens Marylebone road, London
TFIAM - Amiens Hornsgatan, Delta-ratios summary Red columns: workdays, Blue columns: weekend days
TFIAM - Amiens Frankfurter Allee, Delta-ratios summary Red columns: workdays, Blue columns: weekend days
TFIAM - Amiens Marylebone road, Delta-ratios summary Red columns: workdays, Blue columns: weekend days
TFIAM - Amiens Hornsgatan, Stockholm PM 2.5 /NO x ratios for monthly and hourly data
TFIAM - Amiens Marylebone road, London PM 2.5 /NO x ratios for monthly and hourly data
TFIAM - Amiens Model application Generalisation method, basis for typology Validation using the data analysis results Preference to practical approaches Expansion to more models and more cities Model intercomparison (Garmisch conference)
TFIAM - Amiens SEC Model Intercomparison A pilot intercomparison exercise was launched, results of which will be presented on June 3 at the 9 th Harmonisation Conference, Garmisch. 15 participants Simulations to be performed for the case Hornsgatan, Stockholm for: –the whole year, –one day ( ) or –one hour (hour 10 of ), depending on the type of model that is chosen for the application. Deadline for the receipt of model results is 15 May.
TFIAM - Amiens ETCs own model applications Hornsgatan, Stockholm OSPM using observed background concentrations. Frankfurter Allee, Berlin OSPM using observed background concentrations. Marylebone road, London OSPM using observed background concentrations & Complete model cascade, i.e. City Delta OFIS model results used as urban background concentrations for OSPM.
TFIAM - Amiens Hornsgatan, Stockholm, average daily variation NO 2 and PM 2.5 obs (OSPM)
TFIAM - Amiens Frankfurter Allee, Berlin NO x, NO 2, CO and PM 10 obs (OSPM)
TFIAM - Amiens Frankfurter Allee, Berlin, monthly variation NO x, NO 2, CO and PM 10 obs (OSPM) background
TFIAM - Amiens Marylebone road, average daily variation NO x, NO 2, O 3 and CO obs (OSPM)
TFIAM - Amiens Marylebone road, NO x, NO 2, O 3 and CO obs (OSPM) - monthly
TFIAM - Amiens Model cascade Urban and street scale model coupling using model results for the urban background as input to the street scale model and considering the local scale emissions estimates.
TFIAM - Amiens OFIS results - comparison with observed data O3O3 NO 2
TFIAM - Amiens Marylebone road, NO x, NO 2, CO and PM 10 mod (OFIS & OSPM) – hourly
TFIAM - Amiens Marylebone road, NO x, NO 2, CO and PM 10 mod (OFIS & OSPM) – monthly
TFIAM - Amiens Actions in 2004 (1/2) typologyProceed with typology (in particular, using model results within SEC) global analysisPerform a global analysis of measured data data analysisContinue and finalise data analysis concentrating on city delta cities interpretationContinue and finalise interpretation of data analysis results based on emission estimations concentrating on City Delta cities findingsIncorporate findings of City Delta in SEC
TFIAM - Amiens Actions in 2004 (2/2) model applicationExpand model application to more model suites (outside the ETC) and more cities model intercomparisonLaunch model intercomparison (on the occasion of the Garmisch conference), investigate option of JRC involvement input to SoERProvide input to SoER by suggesting how the street scale could be taken into account in the IA methodology InteractInteract with various stakeholders