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MOBILE SOURCE EMISSION INVENTORY FOR THE CITY OF CAPE TOWN

MOBILE SOURCE EMISSION INVENTORY FOR THE CITY OF CAPE TOWN. DAPPS Report-back Meeting Juliet Mert & Eugene Cairncross Peninsula Technikon 27 November 2003. OVERVIEW. DAPPS requirements Methodology (Toolkit and Manual method) Results Discussions/Conclusion Acknowledgements.

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MOBILE SOURCE EMISSION INVENTORY FOR THE CITY OF CAPE TOWN

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  1. MOBILE SOURCE EMISSION INVENTORY FOR THE CITY OF CAPE TOWN DAPPS Report-back Meeting Juliet Mert & Eugene Cairncross Peninsula Technikon 27 November 2003

  2. OVERVIEW • DAPPS requirements • Methodology (Toolkit and Manual method) • Results • Discussions/Conclusion • Acknowledgements

  3. DAPPS Requirements • For mobile source emissions, DAPPS requires strip source emission rates of CO, HC, NOx, PM & SOx [g pollutant/s per strip]. • The IPIECA Toolkit predicts total mobile source emissions in the CMA(i.e. a mobile source emission inventory). • A spreadsheet was setup in an attempt to determine temporal and spatial emissions.

  4. Methodology TOOLKIT METHOD • The IPIECA Toolkit is an emission inventory model, developed by IPIECA (UAQM) • The model estimates emission rates based on: vehicle kms traveled, fuel consumption rates, annual human and vehicle population growth rates.

  5. Toolkit Results Total Petrol and Diesel Consumption, Modeled vs Actual

  6. Base Year Pollutant Levels

  7. Methodology MANUAL METHOD • Basis: vehicle counts (for the CBD), ave. speeds, emission factors (EF) and route distances. • Vehicle counts obtained from the Annual Vehicle Screenline Survey for Cape Town CBD (2001). Counts were done at 11 points in the City centre. • Route distances were physically measured then sectioned into zones.

  8. City map

  9. Section of CMA map

  10. Study area boundary Counting stations boundary

  11. Manual Results aEmission = zone distance*vehicles/hour*EF [g/h] b60% of vehicles accounted for in CMA

  12. Discussion/Conclusion • There is a good match between Toolkit total fuel consumption and fuel sales figures. • The accuracy of estimated total and strip source emissions relies on valid assumptions, area boundaries and quality of data (such as vehicle counts).

  13. Acknowledgements • CSIR • Pentech • SKR • SAWB • Naamsa, Sapia, Sapref, City of Cape Town *DAPPS is funded by the DACST’s Innovation Fund, administered by the NRF.

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