9. Ionization and Energy Exchange Processes

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9. Ionization and Energy Exchange Processes

1. Solar extreme ultraviolet (EUV) is the major
   source of energy input into the
   thermospheres/ionospheres in the solar system.
2. Electron precipitation contributes near the
   magnetic poles.
3. l gt 90 nm causes dissociation (O2 ?OO)
4. l lt 90 nm causes ionization
5. Energy losses (sinks), from the ionosphere point
   of view, are airglow and the heating of the
   neutral atmosphere (thermosphere)
6. Energy flow diagram in Fig. 9.1

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9.1 Absorption of Solar Radiation in the
Thermosphere (1)
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9.1 Absorption of Solar Radiation in the
Thermosphere (1a)
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9.1 Absorption of Solar Radiation in the
Thermosphere (2)
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9.1 Absorption of Solar Radiation in the
Thermosphere (2a)
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9.1 Absorption of Solar Radiation in the
Thermosphere (3)
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9.1 Absorption of Solar Radiation in the
Thermosphere (3b)
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9.3 Photoionization (1)
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9.3 Photoionization (1a)
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9.3 Photoionization (2)
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11.4 Ionospheric Layers
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11.4 Ionospheric Layers (2)
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11.4 Ionospheric Layers (3)
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11.4 Ionospheric Layers (4)