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Variations in solar irradiance have been invoked as drivers of the
Earth's atmosphere and its climate. Although, such variations and fluctuations
have been followed for decades, partly even centuries, a number of important and
basic questions surrounding them remain unanswered, or controversial. This also
leads to significant uncertainties in the role played by the Sun in, e.g., driving
climate change. In this lecture I provide an overview of our present knowledge and
understanding of solar variability, covering both, observational and theoretical
aspects. |
