Stratospheric Ozone Depletion
Stratospheric Ozone Depletion
Stratospheric Ozone Depletion
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What influences ODP?<br />
• Lifetime in the troposphere<br />
– The more effective the tropospheric removal processes,<br />
the less of the compound that will survive to reach the<br />
stratosphere.<br />
• Altitude at which a compound is broken down in the<br />
stratosphere<br />
– <strong>Ozone</strong> is more abundant in the lower stratosphere<br />
– Substitution of F atoms for Cl atoms makes a compound<br />
break down at higher altitude <br />
less efficient in<br />
destroying O 3 .<br />
• Distribution of halogen atoms, Cl, Br, and F, contained<br />
within the molecule<br />
– Molecule for molecule, F
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