For the textbook green canopy to form, what condition must the sun meet regarding its position?

Answer

The sun must be relatively low on the horizon, such as in the late afternoon or early evening.

The required reddish/orange light needed to combine with the storm's internal blue scattering occurs when the sun's light travels through more atmosphere due to being low on the horizon.

For the textbook green canopy to form, what condition must the sun meet regarding its position?
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