Date post: | 02-Jul-2015 |
Category: |
Environment |
Upload: | gustavo-olivares |
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Spatial distribution of BC sources from mobile measurements
Gustavo Olivares(a.k.a. Guy Coulson)
National Institute of Water and Atmosphere Research
Outline
• Why?
• Campaign description
• Method
• Results
• Conclusion
Why?
• Identify Traffic vs. Residential Wood Combustion (RWC) emission areas– Enable emission density estimates– Highlight target areas for campaigns,
measures, etc
Campaign description
• Woodburning Emission Dispersion in Glen Eden (WEDGE) … deja vu anyone?
• MAQS2 based campaign– BC– CO2– GPS
(simple) Method
• Ratio for RWC emission factors is about 3 times larger than the same ratio for traffic
• Ratio between BC and CO2
Results CO2 [ppm]
Results BC [ng/m3]
Results BC / CO2
0%
2%
4%
6%
8%
10%
12%
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75
BC / CO2
Fre
quen
cy
~ 3 times higher ratio for RWC
Source mapping
Source mapping
Source mapping
Conclusions
• BC / CO2 ratio is useful to discriminate between traffic and residential combustion sources
• Mobile measurements of these pollutants can effectively map the emission areas
• Could this be used for point measurements screening?