isthar kick off meeting

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ISTHAR KICK OFF MEETING THE POINT OF VIEW OF THE USER CITY : GRAZ - AUSTRIA

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ISTHAR KICK OFF MEETING. THE POINT OF VIEW OF THE USER CITY : GRAZ - AUSTRIA. City of Graz- location. 270.000 Citizens. City of Graz- available tools -1. Emission inventory Traffic, residential combustion, industry Spatial resolution: street network 80% line sources, rest as area sources - PowerPoint PPT Presentation

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ISTHAR KICK OFF MEETING

THE POINT OF VIEW OF THE USER CITY : GRAZ - AUSTRIA

City of Graz- location

270.000 Citizens

City of Graz- available tools -1

• Emission inventory – Traffic, residential combustion, industry– Spatial resolution: street network 80% line

sources, rest as area sources– Temporal resolution: 1h

• Traffic model: resistance model• Dispersion tool: meso scale, prognostic,

diagnostic

City of Graz- available tools -2

• Noise model (inventory) – Traffic on street network (simple resistance

model)– Temporal resolution: 1h– Spatial resolution: street network

• Dispersion tool: local scale (street canyon)

NOx-Emissions

Flow field 10 m above groundFlow field 10 m above ground

FLOW FIELD SIMULATIONFLOW FIELD SIMULATION

1 11 21 31

R1

R11

R21

R31

R41

5.85E-02-6.50E-02

5.20E-02-5.85E-02

4.55E-02-5.20E-02

3.90E-02-4.55E-02

3.25E-02-3.90E-02

2.60E-02-3.25E-02

1.95E-02-2.60E-02

1.30E-02-1.95E-02

6.50E-03-1.30E-02

0.00E+00-6.50E-03

NO2

11.01.1998 9:00 AM

[ppm]

NO2-Concentration 9am

Pollution dispersion in complex terrain

Annual mean value for NO2

NE-wind 1m/s; flow field

Micro-scale dispersion – street level

0% 20%

NE-wind 1m/s; NOx - concentration

Micro-scale dispersion – street level

Expected results from ISHTAR

• Hot spot recognition

• Impact of different scenarios– Technical measures

• New technology vehicles, alternative fuels, etc.• Rerouting of traffic, congestions……

– Non technical measures • Change in modal split for certain districts

Expected results from ISHTAR

• Infrastructural improvements

• Air quality improvement (not really, except at some locations)

• Lower noise levels (yes)

• Reduced health effects (yes/no, but mapping of health effects zones)