Air Pollution Transport and How It Affects New Hampshire

1. Air Pollution Transport and How It Affects New Hampshire A Report Prepared by the N.H. Department of Environmental Services May 18, 2004

2. How Does Air Pollution Move Around? … With the wind Just as weather forecasters look to where the wind is coming from to predict tomorrow’s weather, air pollution forecasters look upwind to predict tomorrow’s air quality.

3. Typical Wind Patterns on Bad Air Days in the Northeast, Along with Pollution Source LocationsArrows show winds blowing from the Ohio Valley towards New HampshireNitrogen oxides are key pollutants that cause smog Tons Per Year of Nitrogen Oxides Emissions 150,000 75,000

4. Recent Ground-level Ozone Event in the Northeast Ozone builds during the day, beginning in upwind areas, and transports into New Hampshire late in the day

5. Air Pollution Build-up and Transport

6. Satellite Observation of a Widespread Smog EventSmog is evident over land and water, transported hundreds of miles

7. Satellite Observation of Another Widespread Smog EventSmog is transported over 700 miles offshore

8. What Do You See In This Photograph?

9. On a Clear Day, You Would See Mt. Jefferson

10. What Is This Famous New Hampshire Landmark?

11. On a Clear Day, You Would Know It’s Mt. Washington