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Aviation and the Global Atmosphere

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<strong>Aviation</strong> <strong>and</strong> <strong>the</strong> <strong>Global</strong> <strong>Atmosphere</strong><br />

3.5. Long-Term Changes in Observed Cloudiness <strong>and</strong> Cloud-Related Parameters<br />

3.5.1. Changes in <strong>the</strong> Occurrence <strong>and</strong> Cover of Cirrus Clouds<br />

3.5.1.1. Surface Observations<br />

3.5.1.2. ISCCP Observations<br />

3.5.1.3. HIRS Observations<br />

3.5.1.4. SAGE Observations<br />

3.5.1.5. Upper Bound for <strong>Aviation</strong>-Induced Changes in Cirrus Clouds<br />

3.5.2. Changes in O<strong>the</strong>r Climate Parameters<br />

3.5.2.1. Sunshine Duration <strong>and</strong> Surface Radiation<br />

3.5.2.2. Temperature<br />

3.5.3. Limitations in Observed Climate Changes<br />

3.6. Radiative Properties of Aerosols, Contrails, <strong>and</strong> Cirrus Clouds<br />

3.6.1. Direct Radiative Impact of Aerosols<br />

3.6.2. Radiative Properties of Cirrus Clouds<br />

3.6.3. Radiative Properties of Contrail Clouds<br />

3.6.4. Radiative Forcing of Line-Shaped Contrail Cirrus<br />

3.6.5. Radiative Impact of Additional or Changed Cirrus <strong>and</strong> O<strong>the</strong>r Indirect Cloud Effects<br />

3.7. Parameters of Future Changes in Aircraft-Produced Aerosol <strong>and</strong> Cloudiness<br />

3.7.1. Changes in Climate Parameters<br />

3.7.2. Changes in Subsonic Aircraft<br />

3.7.3. Expected Changes for Supersonic Aircraft<br />

3.7.4. Mitigation Options<br />

http://www.ipcc.ch/ipccreports/sres/aviation/031.htm (3 von 4)08.05.2008 02:40:56

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