Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012 NO x Emission factors in OSPM Wind speed profiles in street canyons NORTRIP.

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Presentation transcript:

Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012 NO x Emission factors in OSPM Wind speed profiles in street canyons NORTRIP – Helsinki meeting 2. May 2012 Matthias Ketzel Department of Environmental Science (former NERI), Aarhus University, Denmark

Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012 Right Emission Factors for NOx ?! Calculated hourly NOx concentrations from Hornsgatan in Stockholm for the time period 1July 2008 to 31 Dec 2009 using OSPM. Calculations based on a constant emissionfactor for NOx.

Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012 OSPM runs for HCAB, Copenhagen 0.7 g/km observed Copert EF, fRoof=0.82 background

Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012 More on Validation of OSPM ›using COPERT 4 emission factors ›factor fRoof = u_Roof / u_Mast = 0.4

Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012 Application of OSPM for many locations in DK ›Selection of 10 streets in Copenhagen ›5 weeks campaign using passive samplers for NO 2 ”Blind Test” 10

Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012 Application of OSPM for many locations in DK ”Blind Test” 10 buildings only on one side

Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012 Sydhavnsgade (South Harbour Street) veh / day veh / day – veh/d

Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012 Application of OSPM for many locations in DK ”Blind Test” 10

Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012 ›factor fRoof = u_Roof / u_Mast ›0.82 before ›0.4 now

Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012 Hornsgatan

Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012

Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012

Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012

Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012 CFD (MISKAM) calculations, WD=90

Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012 WD=120

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