Tag Archives: weather

Pillar

Cloud of the Day – Pillar The pillar is an optical phenomenon where a light source, the Sun or the Moon or a streetlight, eg, is accompanied by a vertical column of light. Depending on the position of the light … Continue reading

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Sun Dogs

Cloud of the Day – Sun Dogs Many of the optical effects in meteorology, such as halos around the Sun and Moon, are the result of the way light interacts with ice crystals. Rainbows are a different matter. They’re the … Continue reading

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Fractus

Cloud of the Day – Fractus Fractus are subsidiary clouds, also referred to as accessory clouds. This means that they are associated with primary clouds such as cumulus or stratus. That’s why fractus clouds are always named in combination with … Continue reading

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