Download - David Bush T&B Systems, Inc. William Hauze Meteorological Solutions, Inc Cara Keslar Wyoming DEQ
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2011 National Air Quality Conferences2011 National Air Quality Conferences
Long-line Tower and Balloon-Long-line Tower and Balloon-borne Ozone and Ozone Precursor borne Ozone and Ozone Precursor
Vertical Profile Sampling for Vertical Profile Sampling for Upper Green Winter Ozone Study Upper Green Winter Ozone Study
2011 2011 David Bush
T&B Systems, Inc.William Hauze
Meteorological Solutions, IncCara KeslarWyoming DEQ
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2011 National Air Quality Conferences2011 National Air Quality Conferences
OverviewOverview• Background
• UGWOS• WY DEQ Ozone Forum
• UGWOS 2011 Efforts• Long-line Measurement Methodology• Tower• Tethered Balloon
• Preliminary Data
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2011 National Air Quality Conferences2011 National Air Quality Conferences
Upper Green Winter Ozone Study Upper Green Winter Ozone Study (UGWOS)(UGWOS)
• Upper Green River Wintertime Ozone Study – UGWOS 2007• Lack of snow and no elevated ozone episodes • Learned enough for planning future years
• UGWOS 2008• Significant elevated ozone observed• Documented spatial scale of problem and developed
conceptual model• UGWOS 2009, 2010
• Focused on additional chemistry• Improved mesonet monitoring coverage and
communications
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2011 National Air Quality Conferences2011 National Air Quality Conferences
UGWOS – Ozone, Met Profiles
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2011 National Air Quality Conferences2011 National Air Quality Conferences
UGWOS – Spatial Monitoring
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2011 National Air Quality Conferences2011 National Air Quality Conferences
UGWOS – Spatial Monitoring
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2011 National Air Quality Conferences2011 National Air Quality Conferences
WY DEQ Ozone ForumWY DEQ Ozone Forum• 2009, 2010 Ozone Forum
• Review collected data• Discuss remaining issues and questions• Discuss additional monitoring
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2011 National Air Quality Conferences2011 National Air Quality Conferences
What is the diurnal vertical structure of What is the diurnal vertical structure of the ozone concentrations?the ozone concentrations?
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2011 National Air Quality Conferences2011 National Air Quality Conferences
What is the diurnal vertical structure of What is the diurnal vertical structure of ozone precursors?ozone precursors?
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2011 National Air Quality Conferences2011 National Air Quality Conferences
What is the vertical diurnal structure of What is the vertical diurnal structure of ozone precursors?ozone precursors?
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2011 National Air Quality Conferences2011 National Air Quality Conferences
UGWOS 2011
• Tethered Balloon
• Tall Tower
• Supplemental measurements at WY DEQ Boulder site
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2011 National Air Quality Conferences2011 National Air Quality Conferences
Long-line MeasurementsLong-line Measurements
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2011 National Air Quality Conferences2011 National Air Quality Conferences
Long-line Measurement Equipment Long-line Measurement Equipment • Teledyne/API Model 200E NO/NO2/NOx Analyzer
• Teledyne/API Model 400E Ozone Analyzer
• Baseline-Mocon Series 9000 NMHC Methane/Non-Methane Analyzer
• Campbell Scientific CR10 Data Logger w/ A6REL-12 Relay Drive
• RM Young Wind Monitor and temperature sensors at Tower
• Hobo Pro temperature/RH sensors on Tethered Balloon
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2011 National Air Quality Conferences2011 National Air Quality Conferences
Long-line MeasurementsLong-line Measurements• Dedicated 5/16” ID Teflon® tubing to
minimize pressure drop within line at 4 lpm
• Four levels, with worst-case residence time of 20 seconds• Tower – 4m, 25m, 50m, 75m• Tethered Balloon – 4m, 33m, 67m, 100m
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2011 National Air Quality Conferences2011 National Air Quality Conferences
Long-line MeasurementsLong-line Measurements
Valved Rotameters
Solenoids
To Pump
To Analyzers
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2011 National Air Quality Conferences2011 National Air Quality Conferences
Long-line MeasurementsLong-line Measurements• Using solenoid control, sampling switches
sequentially to next level every 3 minutes• First two minutes used to purge lines and
allow analyzers to stabilize to new sample pressure and concentrations (most critical for THC analzyer)
• Final minute averaged• Thus, 12 minute cycle, with each hour
consisting of five 1-minute averages
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2011 National Air Quality Conferences2011 National Air Quality Conferences
UGWOS TowerUGWOS Tower
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2011 National Air Quality Conferences2011 National Air Quality Conferences
UGWOS TowerUGWOS Tower
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2011 National Air Quality Conferences2011 National Air Quality Conferences
UGWOS TowerUGWOS Tower
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2011 National Air Quality Conferences2011 National Air Quality Conferences
UGWOS TowerUGWOS Tower
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2011 National Air Quality Conferences2011 National Air Quality Conferences
UGWOS TowerUGWOS Tower
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2011 National Air Quality Conferences2011 National Air Quality Conferences
Tethered BalloonTethered Balloon
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2011 National Air Quality Conferences2011 National Air Quality Conferences
Tethered BalloonTethered Balloon
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2011 National Air Quality Conferences2011 National Air Quality Conferences
Tethered BalloonTethered Balloon
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Preliminary Data - TowerPreliminary Data - Tower
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2011 National Air Quality Conferences2011 National Air Quality Conferences
Preliminary Data – Tethered BalloonPreliminary Data – Tethered Balloon
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2011 National Air Quality Conferences2011 National Air Quality Conferences
Preliminary Data – Tethered BalloonPreliminary Data – Tethered Balloon
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Acknowledgements Acknowledgements • Wyoming DEQ• Meteorological Solutions, Inc.• Air Resource Specialists• Environ• Sacramento Metropolitan AQM, California
ARB
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2011 National Air Quality Conferences2011 National Air Quality Conferences
Suggestion for Future Studies – A Bigger TruckSuggestion for Future Studies – A Bigger Truck