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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 on theme: "Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012 NO x Emission factors in OSPM Wind speed profiles in street canyons NORTRIP."— Presentation transcript:

1 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

2 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.

3 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

4 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

5 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

6 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

7 Department of Environmental Science AARHUS UNIVERSITY NORTRIP, Helsinki, May 2012 Sydhavnsgade (South Harbour Street) 20 000 veh / day 49 000 veh / day 20 000 – 30 000 veh/d

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

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

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

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

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

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

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

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

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