Assertion: radiation's spectrum | /r/CapableOf | depend upon solar elevation
Facets:
value: due to atmospheric effects
type: CAUSE
value: with dominating during twilight
type: TEMPORAL
Source sentences:
text: The spectrum of surface illumination depends upon solar elevation due to atmospheric effects, with the blue spectral component dominating during twilight before and after sunrise and sunset, respectively, and red dominating during sunrise and sunset.