This second edition was issued in accordance with the mandatory exchange of the above information from November 2020, in addition to space weather advisory in the ICAO meteorological information exchange model (IWXXM) form, as specified in Amendment 78 to Annex 3, applicable from 8 November 2018. The title of this manual was changed from the Manual on the Digital Exchange of Aeronautical Meteorological Information to the Manual on the ICAO Meteorological Information Exchange Model.

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