Volcanic Ash Advisory Centre
From EUROCONTROL ATM Lexicon
|Term||Volcanic Ash Advisory Centre|
A meteorological centre designated by regional air navigation agreement to provide advisory information to meteorological watch offices, area control centres, flight information centres, world area forecast centres and international OPMET databanks regarding the lateral and vertical extent and forecast movement of volcanic ash in the atmosphere following volcanic eruptions.
ICAO, Official definition, added to An 3 by Amdt 71 (5/11/1998)