Dust in the Wind

1. Dust in the Wind

2. AOSS 105: Our Changing Atmosphere AOSS 202: The Atmosphere

3. 528 am EST Fri Nov 7 2003 ... Winter Storm Warning today... Expect lake effect snow showers to accumulate an additional 3 to 5 inches today. Sustained west to northwest winds of 20 to 30 mph with gusts to 40 mph will cause considerable blowing and drifting snow with near whiteout conditions at times into the afternoon. Look for the snow showers to continue at a reduced intensity tonight... with an additional 1 to 3 inches of snow possible. If you must drive in the warned area... be prepared for hazardous travel conditions and rapidly changing visibility. Carry a winter survival kit in your car in case you get stranded.

5. National Ambient Air Quality Standards ------------------------------------------------------------------------ Carbon Monoxide (CO) 8-hour Average 9 ppm (10 mg/m3) Primary 1-hour Average 35 ppm (40 mg/m3) Primary Nitrogen Dioxide (NO2) Annual Arithmetic Mean 0.053 ppm (100 µg/m3) Primary & Secondary Ozone (O3)     1-hour Average 0.12 ppm (235 µg/m3) Primary & Secondary Lead (Pb)     Quarterly Average 1.5 µg/m3   Primary & Secondary Particulate (PM 10)Particles with diameters of 10 micrometers or less     Annual Arithmetic Mean 50 µg/m3   Primary & Secondary     24-hour Average 150 µg/m3   Primary & Secondary Particulate (PM 2.5)Particles with diameters of 2.5 micrometers or less Annual Arithmetic Mean **15 µg/m3   Primary & Secondary     24-hour Average ** 65 µg/m3   Primary & Secondary Sulfur Dioxide (SO2)     Annual Arithmetic Mean 0.03 ppm (80 µg/m3) Primary     24-hour Average 0.14 ppm (365 µg/m3) Primary     3-hour Average 0.50 ppm (1300 µg/m3) Secondary

6. Los Angeles: 1943 Photo courtesy of Los Angeles Times Collection, Department of Special Collections, UCLA Library

7. 120 ppb Los Angeles, CA

8. Source: http://www.epa.gov/airtrends/ozone.html

9. Source: http://www.epa.gov/airtrends/carbon.html

10. Source: http://www.epa.gov/airtrends/lead.html

11. Source: http://www.epa.gov/airtrends/sulfur.html

12. Source: http://www.epa.gov/airtrends/pm.html

14. Primary Pollutants

16. O3 OH SO2 -> Sulfate H2O2 SO2

17. Haze

18. Source: http://www.epa.gov/airtrends/pm.html

19. Source: http://vista.cira.colostate.edu/improve/Data/GraphicViewer/seasonal.htm

20. Source: http://vista.cira.colostate.edu/improve/Data/GraphicViewer/seasonal.htm

21. Source: http://vista.cira.colostate.edu/improve/Data/GraphicViewer/seasonal.htm

22. Source: http://vista.cira.colostate.edu/improve/Data/GraphicViewer/seasonal.htm

23. Source: http://vista.cira.colostate.edu/improve/Data/GraphicViewer/seasonal.htm

24. Source: http://vista.cira.colostate.edu/improve/Data/GraphicViewer/seasonal.htm

25. Source: http://vista.cira.colostate.edu/improve/Data/GraphicViewer/seasonal.htm

26. Source: http://vista.cira.colostate.edu/improve/Data/GraphicViewer/seasonal.htm

27. Primary Pollutants

28. Primary Pollutants

29. Visibility Degradation

30. Haze in National Parks

31. Primary Pollutants

32. Primary Pollutants

34. china

37. china

38. Source: http://www.epa.gov/airtrends/pm.html

40. Primary Pollutants

41. Primary Pollutants