Yes, clouds and atmospheric particulates can occlude red light from reaching the ground. Here's how it works:
1. Scattering: The atmosphere scatters shorter wavelengths of light (blue and violet) more than longer wavelengths (red). However, clouds and particulates can scatter all wavelengths, including red light. When the sky is overcast or there are many particulates (like dust or pollution), the intensity of red light reaching the ground can be reduced.
2. Absorption: Water droplets in clouds can absorb some light, including red wavelengths, depending on their size and the density of the cloud. This absorption can further diminish the amount of red light that reaches the surface.
3. Reflection: Clouds can reflect light back into space, which can also contribute to a reduction in the amount of red light that reaches the ground.
Overall, while clouds and atmospheric particulates do not selectively block red light, they can reduce its intensity along with other wavelengths, affecting the overall color and brightness of the light that reaches us.