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Twenty Questions and Answers about the Ozone Layer

By Fahey, D. W.

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Book Id: WPLBN0000075806
Format Type: PDF eBook
File Size: 2.1 MB
Reproduction Date: 2007
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Title: Twenty Questions and Answers about the Ozone Layer  
Author: Fahey, D. W.
Volume:
Language: English
Subject: Ecology, Natural resource issues, Environemtal protection
Collections: Environmental Awareness Library Collection
Historic
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Publisher: United States Environmental Protection Agency

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Fahey, D. W. (n.d.). Twenty Questions and Answers about the Ozone Layer. Retrieved from http://www.worldjournal.org/


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Excerpt: TWENTY QUESTIONS AND ANSWERS ABOUT THE OZONE LAYER

Table of Contents
Contents page INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.1 I. OZONE IN OUR ATMOSPHERE Q1. What is ozone and where is it in the atmosphere? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.3 Q2. How is ozone formed in the atmosphere? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.4 Q3. Why do we care about atmospheric ozone? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.5 Q4. Is total ozone uniform over the globe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.6 Q5. How is ozone measured in the atmosphere? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.7 II. THE OZONE DEPLETION PROCESS Q6. What are the principal steps in stratospheric ozone depletion caused by human activities? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.8 Q7. What emissions from human activities lead to ozone depletion? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.10 Q8. What are the reactive halogen gases that destroy stratospheric ozone? . . . . . . . . . . . . . . . . . . . . . . . . . Q.13 Q9. What are the chlorine and bromine reactions that destroy stratospheric ozone? . . . . . . . . . . . . . . . . . . Q.16 Q10. Why has an “ozone hole” appeared over Antarctica when ozone-depleting gases are present throughout the stratosphere? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.18 III. STRATOSPHERIC OZONE DEPLETION Q11. How severe is the depletion of the Antarctic ozone layer? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.21 Q12. Is there depletion of the Arctic ozone layer? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.23 Q13. How large is the depletion of the global ozone layer? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.25 Q14. Do changes in the Sun and volcanic eruptions affect the ozone layer? . . . . . . . . . . . . . . . . . . . . . . . . . Q.26 IV. CONTROLLING OZONE-DEPLETING GASES Q15. Are there regulations on production of ozone-depleting gases? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.28 Q16. Has the Montreal Protocol been successful in reducing ozone-depleting gases in the atmosphere? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.30 V. IMPLICATIONS OF OZONE DEPLETION Q17. Does depletion of the ozone layer increase ground-level ultraviolet radiation? . . . . . . . . . . . . . . . . . . Q.32 Q18. Is depletion of the ozone layer the principal cause of climate change? . . . . . . . . . . . . . . . . . . . . . . . . . Q.34 VI. STRATOSPHERIC OZONE IN THE FUTURE Q19. How will recovery of the ozone layer be detected? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.36 Q20. When is the ozone layer expected to recover? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.37 ADDITIONAL TOPICS • Understanding Stratospheric Ozone Depletion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.9 • Heavier-Than-Air CFCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.12 • Global Ozone Dobson Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q.15 • The Disco

 
 


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