On May 13, 2018, talk of Lu state city is visited in Sichuan always park of prefectural fish wild duck in the sky appear " solar halo " weather phenomenon. (Li Xin / photograph bright picture to prohibit reprinting)That day morning 9 when the left and right sides, talk of city of state of Sichuan province Lu always county in the sky appear " solar halo " weather phenomenon, when lasting, be as long as 3 many hours, huge " solar halo " appear grand and dream. According to appraise always prefectural atmosphere branch introduces, this is place is two years continuously when Chun Xia is seasonal, appear " solar halo " marvellous spectacle. Solar halo also calls round rainbow, phenomenon of optics of a kind of air, it is solar when passing cirrostratus, refract or be reflexed and be formed of ice crystal. After the light shoots the ice crystal into cirrostratus, pass reflection twice, the of all kinds that becomes different way dispersedly is smooth. When having cirrostratus, the can float countless ice crystal in the sky, in the ice crystal that goes up with circuit all round the sun, can will same the smooth reflection of kind of color is formed in the person's eye inside infra-red violet dizzy annulus. Expert of local atmosphere branch thinks, the occurrence of solar halo, often adumbrative weather should have constant change. (want to understand more content, the welcome clicks attention us! ) | | |