University Of Arizona

ATMO 170A

QUIZ 5

1)Which pair of primary pollutants produces acid rain?

2. Which pair of primary pollutants produces acid rain?

3. Which region of the contiguous United States receives the most acidic rain?

4. Which source of primary pollutants is the biggest contributor to photochemical smog?

5. Which set of meteorological conditions is the most conducive to the build-up of L.A.-type smog?

6. Which of the following is a major irritant in photochemical smog?

7. According to recent data from the World Health Organization (WHO), which megacity has the highest concentration of harmful PM_2.5?

8. What is main reason that Antarctic region is far more susceptible to ozone depletion than the Arctic region?

9. Ozone amounts fall from a typical value of ____ Dobson units to ____

Dobson units during the most extreme phase of an ozone hole event over Antarctica.

10. The ozone hole over the Antarctic exhibits its greatest deficit during which month?

11. How far in the past can tree rings be used as a proxy to estimate temperature and precipitation?

12. About how many billion years ago did oxygen reach what is considered its current levels?

13. Which one of following fingerprints of climate change would not be consistent with warming?

14. How far back in time can ice cores be used to measure past concentrations of greenhouse gases?

15. Which model parameter is the least accurately replicated by climate models?

16. By how much has the global-average surface temperature warmed during the past 100 years?

17. Which region of the world has warmed the most during the past 100 years?

18. Which region of the contiguous U.S. has experienced the greatest lengthening of its growing season during the past 50 years?

19. What are typical horizontal and vertical dimensions of a grid box in today's climate models

20. How much has the level of mean-sea-level changed during the past 100 years?

21. Climate projections for the next 100 years suggest that the season of ____

will experience the most drying over the Southwest U.S.

22. Which of the following is the best explanation as to why the northern Canada is expected to receive more precpitation over the next 100 years?

23. The IPCC concludes that ____ are expected to warm the least over the next 100 years.

24. CO₂ levels are currently rising at a rate of____________ per year.

25. IPCC projections suggest that snowpack over the next 100 years will ____

and spring runoff will occur__________ over the Southwest U.S.

26. The Arctic stratosphere is normally too cold to allow formation of the clouds that help activate ozone destroying chlorine.

27. You would expect to find the highest tropospheric ozone concentrations near the surface on a sunny day as opposed to a cloudy day.

28. The disastrous air pollution of London in December 1952 that is mentioned in the text and class was associated with a stationary center of low pressure.

29.A pH value of 3.2 would be considered alkaline.

30. Transportation accounts for approximately 50% (by weight) of the pollution across the United States.