Question: Assuming the photographer is facing due east. What effects will occur as the clouds move from the western mountain base to the eastern mountain base? (Limit to 10 characters)
Clues:
1. A dark, human-like shadow is projected onto a misty or cloudy surface.
2. A circular halo of colored light, similar to a rainbow, surrounds the head area of the shadow.
3. The viewpoint is from a rocky cliff edge, looking downwards.
4. The atmosphere is filled with fog or low-lying clouds.
5. The left side of the rocky cliff is illuminated, suggesting a light source from behind and to the right of the viewer's perspective (consistent with a sun in the west if the viewer faces east).
Answer: Foehn effect
Category: Astronomy and Geography