Tristan Amm, a forecasting specialist at Météo France, commented on the Ouest-France newspaper about this rare optical phenomenon called parelium.
“It is an optical phenomenon that occurs when the sun’s rays pass through ice crystals present in clouds at high altitude. At low altitude, these crystals disappear, it is very hot,” he explained, specifying that it is a “very rare” phenomenon. “.
The three suns were observed for almost three hours in the morning, a particularly long time for this phenomenon. This is the first time that the inhabitants of Mohe have witnessed this phenomenon. In January, a parelion had already been observed in Jilin, in eastern China. A month later, witnesses in Mongolia claimed to have seen up to five suns at a time.
China: 3 suns 🌞☀️🌞 seemed to shine in the yesterday, in Mohe, Heilongjiang Province due to a relatively rare atmospheric optical phenomenon, caused by refraction of ice crystals and has strict requirements on the weather conditions. pic.twitter.com/mfQ7hzLby0
– Rebecca Rambar (@RebeccaRambar) October 16, 2020
China: 3 suns seemed to shine yesterday in Mohe, in Heilongjiang Province, because of a relatively rare atmospheric optical phenomenon, caused by the refraction of ice crystals and which requires very strict weather conditions.
In 340 BC, in his work on meteorology, Aristotle tried to explain that halos, parelios and other rainbows were only effects of refraction of light and, therefore, simple illusions.
According to Amm, this phenomenon can also happen with lunar light.
“But that would require low-lying clouds,” he said. The phenomenon occurs most often when the moon is full.