Here they are the video of introduction to solar radiation for hydrologists. There is not any special in this. You can see all our contributions and literature on the topic in these posts.
Introduction to Radiation - Planck and Stefan-Boltzmann laws
Introduction to Radiation - Planck and Stefan-Boltzmann laws
Radiation from Sun to Earth
Radiation vs latitude
Attenuation of solar radiation by the atmosphere
Shadows
Long wave radiation