Columbus MSA Briefing

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FALL LINE AIR QUALITY STUDY

• Columbus MSA Briefing

February 19, 2004
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Geographic Definitions Columbus Metropolitan
Statistical Area (MSA) and Combined Statistical
Area (CSA)
After June 6, 2003
Before June 6, 2003
Columbus MSA
Auburn-Opelika MSA
Tuskeegee MSA
As defined by the US OMB in 1990 and
implemented by the Census Bureau on 6/30/1999
As defined by the US OMB on 12/27/2000 and
implemented by the Census Bureau on 6/6/2003
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Ground-level OzoneFormation
Volatile Organic Compounds (VOCs)
Nitrogen Oxides (NOx)
Ozone (O3) Smog

Combustion Processes
Fuels, Paints, Solvents, Vegetation
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VOC Sources in Columbus MSA (2000)
Total 385 tons per day

• Anthropogenic Sources
• Gasoline Vehicles
• Solvents (Paints, Automotive Products, Adhesives,
  etc.)
• Carbon Black
• Lawn Garden
• Bakeries

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NOx Sources in Columbus MSA (2000)
Total 42 tons per day
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2007 NOx Emissions in GA by Region and by Source
Georgia Total 1480 tons/day Alabama Total (not
shown) 998 tons/day
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Significant improvements in regional air quality
are expected by 2007 with no additional controls
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8-hr Average Ozone Columbus, GA(Crime Lab EPD
Monitoring Station)
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But will these existing controls be enough?
Region Maximum Daily Peak 8-hour
Ozone Observed/Simulated2000/Simulated2007
Estimated Change in Region Maximum of Peak 8-hour
Surface Ozone from August 17th, 2000 to 2007
under the Existing Federal Control Strategies
(ppbv)
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(No Transcript)
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Reality
Goal
Theory
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What is contributing to the ozone?
8-hr Average Ozone Columbus, GA(Crime Lab EPD
Monitoring Station)
0.14 0.12 0.10 0.08 0.06 0.04 0.02 0.00
11-Aug 12-Aug 13-Aug 14-Aug 15-Aug 16-Aug
17-Aug 18-Aug 19-Aug 20-Aug DATE
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What is contributing to the ozone?
Of the peak 0.090 ppmv 0.060 ppmv is
regional background What about the
remaining 0.030 ppmv?
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Sensitivity of 8-hour ozone to NOx, Aug. 17
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Regional sources contributing to 8-hr Ozone on
August 17, 2007 in Columbus
the missing 0.030 ppmv of ozone
Alabama N. Georgia
Regional NOx
Point Area Nonroad Mobile
Atlanta NOx
Columbus MSA (GA) Local NOx
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Sensitivity of 8-hour ozone to NOx
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Regional sources contributing to 8-hr Ozone in
Columbus in 2007
August 17 dominated by local
August 18 dominated by AL
August 15 dominated by Atlanta
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How effective are regional emissions reductions?
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Implications for PM

• The FAQS was primarily an ozone study.
• Recently acquired funding from Georgia DOT and
  EPD will allow us to provide a similar analysis
  for PM2.5 to be completed Summer 2004.

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Questions and Comments

• For more information
• http//cure.eas.gatech.edu/faqs
• Acknowledgement
• Dan Cohan, Yongtao Hu, Alper Unal, Sergey
  Napelenok, Di Tian, Jaemeen Baek, Talat Odman,
  Ted Russell, Karsten Baumann