Alaska Regional Haze Overview

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Alaska Regional Haze Overview

• Division of Air Quality
• Alaska Department Of Environmental Conservation

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Presentation Overview

• Analysis Haze Characterization at Class I Areas
• Analysis Transboundary Sources, Seasonal
  Patterns
• Reflections What cant we control?
• Summary What do we need?

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Analysis Haze Characterization at Class One
Areas
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Regional Haze Impacts - Denali
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Regional Haze Impacts - Denali
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Regional Haze Impacts - Denali
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Regional Haze Impacts - Tuxedni
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Regional Haze Impacts - Tuxedni
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Regional Haze Impacts - Simeonof
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Regional Haze Impacts - Simeonof
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Analysis Transboundary Sources and Seasonal
Patterns
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Arctic Haze
Arctic Haze

• Air enters Alaska from the Arctic
• Occurs in winter
• Layered haze
• Characterized by sulfate, metals and light
  absorbing carbon

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Asian Dust

• Air enters Alaska from Asia, especially China
• Occurs in spring
• Layered haze
• Characterized by soil elements and metals

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Wildfire Smoke

• Wildfires in Alaska, Canada, and Siberia produce
  smoke that reaches the park
• Occurs in summer
• Layered or regional haze depending on the fires
  locations
• Characterized by potassium and organic and
  elemental carbon

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Reflections What cant we control?
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Summary What do we need?
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Modeling of emissions plumes and back
trajectories Emissions from marine
shipping Monitoring of transboundary
sources Understanding of biogenic emissions-
climate, fire, wetlands and land cover modeling
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Regional Haze Impacts - Denali
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Regional Haze Impacts - Tuxedni
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Regional Haze Impacts - Simeonof