Sunset Observed from Novi Ligure, Italy

September 26, 2023


Photographer: Valter Luna   

Summary Author: Valter Luna  

 Shown above is a colorful altocumulus cloud deck I observed from near Novi Ligure, Italy, just after sunset on August 3, 2023. To have attention getting twilights such as this, clouds and or aerosols are needed to scatter and reflect the waning sunlight at the end of day. The red colors of the visible spectrum dominate when the Sun approaches the horizon since the greater pathlength of sunlight attenuates the shorter wavelength colors (blues and greens). When clouds are positioned just so as the Sun dips beneath the horizon, the sunset may be memorable indeed. 


Novi Ligure, Italy Coordinates: 44.7620, 8.7859

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