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Introduction to the coding of clouds

(Section 2.8.1)

The codes CL, CM and CH presented in this Atlas, provide a convenient way of describing clouds in meteorological reports, by means of figures selected from tables of specifications. The specifications and procedures are discussed in detail in code specifications and coding procedures.

Following information is given for each code figure:

(a) A technical specification

(b) An explanation, which enlarges the technical specification, on the appearance and evolution of the clouds in question and sometimes relationships with or differences to other clouds

The procedure for the selection of the correct code figure is explained in coding instructions of clouds in the codes CL, CM and CH.

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