6 Models and Mechanisms

This section outlines potential mechanisms involved in producing some of the solar signals outlined in Sections 2.2 and 2.3. It discusses how the atmosphere may respond to changes in both total and spectrally-resolved solar irradiance through radiative and dynamical processes. It also considers how climate models can be used to test potential mechanisms and to what extent climate models are able to simulate the observed signals.

 6.1 Climate change in response to variations in total solar irradiance
 6.2 Model studies of the influence of varying UV in the middle atmosphere
 6.3 Dynamical mechanisms in the middle atmosphere
 6.4 Model studies of the influence of varying solar UV on the troposphere
 6.5 Coupling between the stratosphere and troposphere

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