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IMPROVE Report 2006 L. Debell, K. Gebhart, B. Schichtel and W. Malm

This report provides summaries of data from the IMPROVE network, including spatial trends, variability, and trends in aerosol concentrations and extinction coefficients. It also includes executive summaries of special studies and QA studies conducted.

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IMPROVE Report 2006 L. Debell, K. Gebhart, B. Schichtel and W. Malm

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  1. IMPROVE Report 2006L. Debell, K. Gebhart, B. Schichtel and W. Malm

  2. IMPROVE Report Outline • Section 1: IMPROVE Data summaries • Chapter 1: Network Overview • Chapter 2: IMPROVE-STN Data Comparability • Chapter 3: Spatial trends in the annual average aerosol concentrations and extinction coefficients • Chapter 4: Spatial Variability of monthly patterns in aerosol concentrations and extinction coefficients • Chapter 5: Trends in aerosol concentrations and extinction coefficients • Section 2: Special Study Summaries • Chapter 1: BRAVO Executive Summary and Link to full report • Chapter 2: Yosemite Executive Summary and Link to full report • Chapter 3: Coarse Mass Study • Chapter 4: IMPROVE Algorithm Review • Section 3: QA Studies • Chapter 1: Historical Data QA/QC Review • Chapter 2: Denuder Study • Other work • Carbon 12/14 study • Hygroscopicity of Smoke and Carbon Aerosols

  3. IMPROVE Network

  4. Fusion of IMPROVE & STN Networks

  5. Relative Errors from Six Collocated IMPROVE Monitors Si OC Relative Error [(xi – yi) / (xi +yi)/2] S NO3 Average Concentration, (µg/m3)

  6. Relative Errors from Six Collocated IMPROVE & STN Monitors OC (Blank corrected STN OC data) Si Relative Error (IMPROVE – STN)/Avg NO3 S Average Concentration, (µg/m3)

  7. Comparability of IMPROVE and STN Measurements Precision in Annual Average Concentrations calculated from collocated data Where: X and Y represent the paired annual means • Note, these uncertainties do not contain the error due to a systematic bias

  8. IMPROVE Reconstructed Fine Mass

  9. IMPROVE & STN Reconstructed Fine Mass

  10. IMPROVE Ammonium Sulfate Mass

  11. IMPROVE & STN Ammonium Sulfate Mass

  12. IMPROVE Organic Carbon Mass

  13. IMPROVE & STN Organic Carbon Mass

  14. IMPROVE Ammonium Nitrate Mass

  15. IMPROVE & STN Ammonium Nitrate Mass

  16. IMPROVE Fine Soil Mass

  17. IMPROVE & STN Fine Soil Mass

  18. IMPROVE Particulate Light Extinction

  19. IMPROVE Deciviews

  20. IMPROVE Monthly Fine Mass Budgets

  21. STN Monthly Fine Mass Budgets

  22. IMPROVE Monthly Fine Mass Budgets

  23. IMPROVE Monthly Fine Mass Budgets

  24. Trends in the Best and Worst Haze Days

  25. Clear Day Deciview Trend 1995-2004 http://www2.nature.nps.gov/air/Pubs/pdf/gpra/Gpra2005_Report_03202006_Final.pdf

  26. Hazy Day Deciview Trend 1995-2004 http://www2.nature.nps.gov/air/Pubs/pdf/gpra/Gpra2005_Report_03202006_Final.pdf

  27. Speciated Coarse Mass

  28. Coarse Mass

  29. Fine Mass

  30. Coarse Mass Fraction

  31. Fine Mass Fraction

  32. Review of Aerosol Optical Properties Derived from IMROVE Particulate and Optical Data

  33. Inorganic Light Extinction Efficiencies Organic bext efficiency = (density inorganic / density organic) * inorganic bext efficiency

  34. Coarse Mass Efficiency • Derived from Transmissometer and Particulate data

  35. Other NPS/CIRA Work

  36. Seasonal Contemporary and Fossil C (mg/m3) The error bars represent the range in six day concentrations

  37. Seasonal Fraction Contemporary Carbon The error bars represent the fraction contemporary range

  38. Urban Excess Puget Sound, WA - Mount Rainier, WA • Puget Sound fossil carbon is primarily due to local sources during winter and summer • Summer biogenic carbon is regionally distributed • ~40% of the winter urban excess is biogenic carbon • Not all biogenic carbon is “natural”

  39. Urban ExcessPhoenix, AZ – Tonto, AZ • Phoenix fossil carbon is primarily due to local sources during winter and summer • Summer biogenic carbon is regionally distributed • About half of the winter urban excess is biogenic carbon • Not all biogenic carbon is “natural”

  40. Hygroscopicity of Smoke

  41. Finished

  42. IMPROVE Light Absorbing Carbon Mass

  43. IMPROVE & STN Light Absorbing Carbon

  44. CM

  45. %SO4

  46. % SO4

  47. % OMC

  48. % OMC

  49. % NO3

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