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- Volcanic_Ash_Advisory_Center abstract "A Volcanic Ash Advisory Center (VAAC) is a group of experts responsible for coordinating and disseminating information on atmospheric volcanic ash clouds that may endanger aviation. As at 2010, there are nine Volcanic Ash Advisory Centers located around the world, each one focusing on a particular geographical region. Their analyses are made public in the form of Volcanic Ash Advisories (VAA) and often incorporate the results of computer simulation models called Volcanic Ash Transport and Dispersion (VATD).The worldwide network of Volcanic Ash Advisory Centers was set up by the International Civil Aviation Organisation (ICAO), an agency of the United Nations, as part of the International Airways Volcano Watch (IAVW), an international monitoring system managed by the International Airways Volcano Watch Operations Group (IAVWOPSG) which replaced the Volcanic Ash Warnings Study Group (VAWSG). The individual VAACs are run as part of national weather forecasting organisations of the country where they are based, e.g. the US NOAA or the British Met Office.The centers were set up in the 1990s to improve forecasts of the locations of ash clouds from volcanic eruptions following incidents where commercial aircraft had flown through volcanic ash resulting in the loss of engine power. British Airways Flight 9, a Boeing 747, lost power to all four engines in 1982 over Indonesia after an eruption of Mount Galunggung. KLM Flight 867, another Boeing 747, again lost power to all engines in 1989 over Alaska after Mount Redoubt erupted. It was recognised following these and other incidents that volcanic ash was a danger to commercial aviation and that the only way to ensure that there would be no loss of an aircraft was to alert pilots in a timely manner to divert their flight around the cloud.".
- Volcanic_Ash_Advisory_Center thumbnail VAAC_Coverage.jpg?width=300.
- Volcanic_Ash_Advisory_Center wikiPageExternalLink vaac.
- Volcanic_Ash_Advisory_Center wikiPageExternalLink index.html.
- Volcanic_Ash_Advisory_Center wikiPageExternalLink vaac.
- Volcanic_Ash_Advisory_Center wikiPageExternalLink index_e.html.
- Volcanic_Ash_Advisory_Center wikiPageExternalLink vaac.
- Volcanic_Ash_Advisory_Center wikiPageExternalLink vaac.arh.noaa.gov.
- Volcanic_Ash_Advisory_Center wikiPageExternalLink vaac.
- Volcanic_Ash_Advisory_Center wikiPageExternalLink ?mod=vaac&id=1.
- Volcanic_Ash_Advisory_Center wikiPageExternalLink washington.html.
- Volcanic_Ash_Advisory_Center wikiPageExternalLink default.aspx.
- Volcanic_Ash_Advisory_Center wikiPageID "22811297".
- Volcanic_Ash_Advisory_Center wikiPageRevisionID "554291299".
- Volcanic_Ash_Advisory_Center hasPhotoCollection Volcanic_Ash_Advisory_Center.
- Volcanic_Ash_Advisory_Center subject Category:Aviation_risks.
- Volcanic_Ash_Advisory_Center subject Category:Volcanology.
- Volcanic_Ash_Advisory_Center type AviationRisks.
- Volcanic_Ash_Advisory_Center type CausalAgent100007347.
- Volcanic_Ash_Advisory_Center type Danger114541044.
- Volcanic_Ash_Advisory_Center type Hazard114541852.
- Volcanic_Ash_Advisory_Center type PhysicalEntity100001930.
- Volcanic_Ash_Advisory_Center comment "A Volcanic Ash Advisory Center (VAAC) is a group of experts responsible for coordinating and disseminating information on atmospheric volcanic ash clouds that may endanger aviation. As at 2010, there are nine Volcanic Ash Advisory Centers located around the world, each one focusing on a particular geographical region.".
- Volcanic_Ash_Advisory_Center label "Volcanic Ash Advisory Center".
- Volcanic_Ash_Advisory_Center label "Volcanic Ash Advisory Center".
- Volcanic_Ash_Advisory_Center label "Volcanic Ash Advisory Center".
- Volcanic_Ash_Advisory_Center label "航空路火山灰情報センター".
- Volcanic_Ash_Advisory_Center sameAs Volcanic_Ash_Advisory_Center.
- Volcanic_Ash_Advisory_Center sameAs Volcanic_Ash_Advisory_Center.
- Volcanic_Ash_Advisory_Center sameAs 航空路火山灰情報センター.
- Volcanic_Ash_Advisory_Center sameAs m.0640_s7.
- Volcanic_Ash_Advisory_Center sameAs Q1133625.
- Volcanic_Ash_Advisory_Center sameAs Q1133625.
- Volcanic_Ash_Advisory_Center sameAs Volcanic_Ash_Advisory_Center.
- Volcanic_Ash_Advisory_Center wasDerivedFrom Volcanic_Ash_Advisory_Center?oldid=554291299.
- Volcanic_Ash_Advisory_Center depiction VAAC_Coverage.jpg.
- Volcanic_Ash_Advisory_Center isPrimaryTopicOf Volcanic_Ash_Advisory_Center.