Author Description

The solar activity has been observed to vary at various time scales, of which the 11-year solar cycle is the most prominent one. Since the Sun provides the main external energy to the Earth, knowledge of solar variability is highly crucial for understanding the influence of the Sun on the Earth's climate system. One of the important measurements related to solar variability is the solar irradiance: the total solar irradiance (TSI) and the spectral solar irradiance (SSI). However, space-based TSI/SSI measurements only cover the last four decades, which is unfortunately not sufficient for stu...