1 / 36

Urban Air Pollution

Urban Air Pollution. Get out Homework! . Out on your desk have the following: Wind Review Worksheet Stamp sheet Pencil/pen Red and blue PUT EVERYTHING ELSE AWAY! . Santiago, Chile. Mexico City, Mexico. Salt Lake City, Utah. Denver. Los Angeles. What is an Inversion?. Second Layer:

lamya
Download Presentation

Urban Air Pollution

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Urban Air Pollution

  2. Get out Homework! • Out on your desk have the following: • Wind Review Worksheet • Stamp sheet • Pencil/pen • Red and blue PUT EVERYTHING ELSE AWAY!

  3. Santiago, Chile

  4. Mexico City, Mexico

  5. Salt Lake City, Utah

  6. Denver

  7. Los Angeles

  8. What is an Inversion? • Second Layer: • Clear, breathable, clean air • Surface Layer: • Dirty, brown, polluted air Boundary

  9. Sources of Pollution • Cars • Factories • Ships • Airplanes • Tractors • Fires • Cooking

  10. Density • Density • Amount of mass in a given volume 5 circles per cube Density =

  11. Density • Density • Amount of mass in a given volume 11 circles per cube Density =

  12. Temperature Affects Density 2 circles per cube 6 circles per cube Density =

  13. Temperature Affects Density 3 circles per cube 10 circles per cube Density =

  14. Which rises and which sinks? Density = Density = 2 circles per balloon 5 circles per balloon

  15. Which rises and which sinks? Density = Density = 7 circles per cube 3 circles per cube

  16. Normal Atmosphere COLD • Normal atmosphere COOL WARM • Air can rise and mix freely throughout the entire troposphere

  17. Inversion Atmosphere COOL • Inversion WARM COLD • Air is trapped in the bottom layer of cold air

  18. Inversion Atmosphere COOL • Mountains WARM COLD • Prevent air from leaving the city

  19. Define • Normal Atmosphere : • Inversion Atmosphere : Air can mix freely through the entire troposphere Air is trapped in the bottom layer of cold air

  20. Inversion Atmosphere Normal Atmosphere

  21. Types of Inversions • Radiation inversions • At night or during winter, the surface cools faster than the air above it WARM HOT COLD HOT

  22. Types of Inversions • Sea breeze inversions • Sea breeze injects cold air below warm air HOT HOT COLD

  23. How to break an Inversion • Sunlight • Warms the surface faster than the air above, eliminating the inversion. WARM COOL COLD HOT

  24. How to break an Inversion • Rain • Makes the atmosphere the same temperature and cleans pollution. COOL WARM COOL

  25. How to break an inversion • Winds • Mix the atmosphere, eliminating inversion. HOT WARM WARM COLD

  26. Discuss • What is an inversion? • How does it form? • How do inversions break?

  27. Mumbai, India

  28. Madrid, Spain

  29. Air Pollution Negative Impacts • Decrease Visibility • Make Bodies of water more Acidic • Affect our health • Irritate lungs • Aggravate asthma • Lead to nonfatal heart attacks in elderly • Premature death in people with heart or lung disease

  30. Describe how an inversion forms • During the winter surface cools faster than air above it • Sea breeze injects cold air in the surface

  31. Types of Inversions • Subsidence inversions • Sinking air from high pressure compresses and warms air high above surface WARM COOL

  32. Convection Demonstration

More Related