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Ozone in the West

Ozone in the West. WESTAR Technical Committee Ozone Workgroup May 2005. Ozone Workgroup Goals. 1.Provide states with scientifically sound data and analyses to support ozone SIPs, especially for areas where transport may be a significant contribution to local and regional concentrations.

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Ozone in the West

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  1. Ozone in the West WESTAR Technical Committee Ozone Workgroup May 2005

  2. Ozone Workgroup Goals 1.Provide states with scientifically sound data and analyses to support ozone SIPs, especially for areas where transport may be a significant contribution to local and regional concentrations. 2. Monitor national decisions on ozone that may affect the west

  3. 8-hour ozone nonattainment areas

  4. Ozone Trends at National Parks

  5. What is causing high ozone concentrations? • EACs for Denver, Four Corners indicate very little contribution from local sources • Transport • Global background • Impacts of fire • Growth in the west

  6. Worldwide NOx Emissions Trends

  7. Long Range Transport of Smoke Emissions

  8. Workgroup Accomplishments • Literature review and compilation • Western ozone episodes identified • Simple analysis of data to identify episodes where transport may be significant • Statistical approach developed to analyze western episodes • Other sources of tools for analysis identified

  9. Data Analysis Challenge

  10. Future Work • Further analysis of identified episodes to determine whether transport is a factor (currently seeking $$) • Determine influence of Asian transport on western ozone concentrations • Determine contributions from fire events • Modeling analyses (with EPA support)

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