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Ozone Depletion FAQ



Frequently Asked Questions about stratospheric ozone depletion.

This FAQ about stratospheric ozone depletion was compiled and written by Robert Parson rparson@spot.colorado.edu with numerous contributions by others.

-01 How to get this FAQ (sci.environment)
These files are posted to the newsgroups sci.environment, sci.answers,...
-02 Copyright Statement (sci.environment)
-03 General remarks (sci.environment)
This is the first of four FAQ files dealing with stratospheric ozone ...
-04 Caveats, Disclaimers, and Contact Information (sci.environment)
| _Caveat_: I am not a specialist. In fact, I am not an ...
-05 Dedication (sci.environment)
This FAQ is dedicated to the memory of Carl J. Lydick, who was one ...
-06 What is the stratosphere?
The stratosphere extends from about 15 km to 50 km. In ...
-07 How is the composition of air described? (Or, what is a 'mixing ratio'?)
The density of the air in the atmosphere depends upon altitude, ...
-08 How does the composition of the atmosphere change with altitude? (Or, how can CFC's get up to the stratosphere when they are heavier than air?)
In the earth's troposphere and stratosphere, most _stable_ ...
-09 How is ozone created?
Ozone is formed naturally in the upper stratosphere by ...
-10 How much ozone is in the layer, and what is a "Dobson Unit" ?
A Dobson Unit (DU) is a convenient scale for measuring the ...
-11 How is ozone distributed in the stratosphere?
In absolute terms: about 10^12 molecules/cm^3 at 15 km, rising ...
-12 How does the ozone layer work?
UV light with wavelengths between 240 and 320 nm is absorbed ...
-13 What sorts of natural variations does the ozone layer show?
There are substantial variations from place to place, and ...
-14 Regional and Seasonal Variation (Ozone layer)
Since solar radiation makes ozone, one expects to see ...
-15 Year-to-year variations (Ozone layer)
Since ozone is created by solar UV radiation, one expects to ...
-16 What are CFC's?
CFC's - ChloroFluoroCarbons - are a class of volatile organic compounds ...
-17 How do CFC's destroy ozone?
CFC's themselves do not destroy ozone; certain of their decay products ...
-18 What is an "Ozone Depletion Potential?"
The ozone depletion potential (ODP) of a compound is a simple measure of ...
-19 What about HCFC's and HFC's? Do they destroy ozone?
HCFC's (hydrochlorofluorocarbons) differ from CFC's in that ...
-20 IS the ozone layer getting thinner?
There is no question that the ozone layer over antarctica has ...
-21 Is the middle-latitude ozone loss due to CFC emissions?
That's the majority opinion, although it's not a universal opinion....
-22 If the ozone is lost, won't the UV light just penetrate deeper into the atmosphere and make more ozone?
This does happen to some extent - it's called self-healing - ...
-23 Do Space Shuttle launches damage the ozone layer?
Very little. In the early 1970's, when little was known ...
-24 Will commercial supersonic aircraft damage the ozone layer?
Short answer: Probably not. This problem is very complicated,...
-25 What is being done about ozone depletion?
The 1987 Montreal Protocol (full text available on the world-wide web ...
-26 References for Part I
A remark on references: they are neither representative ...
-27 Introductory Reading (sci.environment)
[Garcia] R. R. Garcia, Causes of Ozone Depletion, _Physics ...
-28 Books and Review Articles (sci.environment)
[Benedick] R. Benedick, _Ozone Diplomacy_, Harvard, 1991....
-29 More Specialized References (sci.environment)
[Bojkov et al. 1995] R. D. Bojkov, V. E. Fioletov, D. S. Balis,...
-30 Internet Resources (Ozone Depletion)
This list is preliminary and by no means comprehensive; it includes a ...









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