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Credit & Copyright: Jiaqi Sun ÎÅÅÃÎ
Explanation:
Yes, but how many dark clouds have a multicolored lining?
Pictured, behind this darker cloud, is a
pileus
iridescent cloud, a group of water droplets
that have a uniformly similar size and
so together
diffract
different colors of sunlight by different amounts.
The featured image was taken last month in
Pu'er,
Yunnan Province,
China.
Also captured were unusual
cloud ripples above the
pileus cloud.
The formation of a rare pileus cloud capping a common
cumulus cloud is an indication that the lower cloud is
expanding upward
and might well develop into a
storm.
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Based on Astronomy Picture
Of the Day