Pedagogy of the Plants

Fallstreak Hole

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During an evening run, a fallstreak hole forms within an altocumulus sheet. According to Wikipedia, the curious formation occurs “when the water temperature in the clouds is below freezing but the water, in a supercooled state, has not frozen yet due to the lack of ice nucleation. When ice crystals do form, a domino effect is set off due to the Bergeron process, causing the water droplets around the crystals to evaporate: this leaves a large, often circular, hole in the cloud.”

Written by Cameron Brooks

December 25, 2016 at 10:27 am

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