Tuesday, February 16, 2021

Snowglow at midnight and nocturnal sun

It is mid-night. The ground is enshrouded with thick snow. Cloud cover is complete and fresh snow is falling. Yet, the outside looks nearly as bright as a day. There is no heavenly body to illuminate the earth but the light is everywhere, seemly coming from nowhere. 

The first time you experience that, it gives you an eerie feeling. However, the explanation turns out to be a simple one. City lights are being amplified by snow on the ground and white clouds above. It is actually light pollution at its worst and it can mess with animal behaviors and vegetation alike.

While trying to understand this surreal experience, I also came across another atmospheric phenomenon called ‘Nocturnal Sun’ or ‘Bright Night’ on the internet.  It is extremely rare and happens on clear nights when the interaction between charged particles enhances airglow in the upper atmosphere. I wonder if that may also be responsible for some mystical experiences reported in religious societies.

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