Cirrus duplicatus (Ci du) - Maze 1889

(Section 2.3.1.3.4)

Cirrus arranged in superposed layers at slightly different levels, sometimes merged in places. Most Cirrus fibratus and Cirrus uncinus belong to this variety.

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The text enclosed in grey-shaded boxes, like this example, comprises Annex I to the Technical Regulations (WMO-No. 49) and has the legal status of standard practices and procedures.

Cirrus duplicatus (Ci du) - Maze 1889

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