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In this series of images in La Vanguardia's Readers' Photos we can see a very spring-like solar halo, even framed in a flower or surrounded by flying insects, in some images captured in Manlleu (Osona).
The solar halo forms around the sun, presenting an iridescent ring on its outer circumference, due to ice crystals when there are high clouds.
It is considered that the solar halo can announce a change in weather that can bring back some precipitation in these times of drought.
The halo is caused by ice particles suspended in the troposphere that refract light, generating a spectrum of colors around the Moon or Sun.
It is an optical effect in the shape of a disk around the sun - or the moon - and has an iridescent ring on its outer circumference.
