Volcanic Ash Advisory Centers (VAACS)Entry ID: VAACS
Abstract: The International Civil Aviation Organization (ICAO) and other
Aviation concerns recognized the need to keep aviators informed of
volcanic hazards. To that end, nine Volcanic Ash Advisory Centers were
created. These centers are tasked with monitoring Volcanic Ash plumes
with in their assigned airspace.
Each VAAC is responsible for providing Volcanic Ash Advisories (VAA)
whenever an volcanic event ... occurs in their area of responsibility.
Anchorage VAAC - Anchorage, AK, United States
Buenos Aires VAAC - Buenos Aires, Argentina
Darwin VAAC - Darwin, Australia
London VAAC - London, United Kingdom
Montreal VAAC - Montreal, Canada
Tokyo VAAC - Tokyo, Japan
Toulouse VAAC - Toulouse, France
Washington VAAC - Washington, DC, United States
Wellington VAAC - Wellington, New Zealand
Each Volcanic Ash Advisory Center performs these functions:
- Develop and execute numerical meteorological and volcanic ash
dispersion numerical models in real-time.
- Continuously obtain and use satellite information to discriminate
volcanic ash clouds from weather clouds.
- Issue Volcanic Ash Advisories (VAAs), and provide guidance to World
Meteorological Organizations (WMOs) for Sigmet issuance involving
- Provide advisory service to Regional Area Forecast Centers (RAFCs),
Meteorological Watch Offices (MWOs) and other VAACs.
- Coordinate aviation and public information about volcanic episodes
with the national and international volcanic community.
- Provide adequate communications with the aviation and public
community and other VAACs.
[Adapted from the following VAAC web pages:
ATMOSPHERE > AEROSOLS > DUST/ASH/SMOKE
ATMOSPHERE > AIR QUALITY > VISIBILITY
HUMAN DIMENSIONS > INFRASTRUCTURE > COMMUNICATIONS
HUMAN DIMENSIONS > INFRASTRUCTURE > TRANSPORTATION > AVIATION
HUMAN DIMENSIONS > INFRASTRUCTURE > HAZARD ASSESSMENT
HUMAN DIMENSIONS > INFRASTRUCTURE > HAZARD MANAGEMENT
SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > INFRARED IMAGERY
SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > INFRARED RADIANCE
SPECTRAL/ENGINEERING > VISIBLE WAVELENGTHS > VISIBLE IMAGERY
SPECTRAL/ENGINEERING > VISIBLE WAVELENGTHS > VISIBLE RADIANCE
SOLID EARTH > TECTONICS > VOLCANIC ACTIVITY > ERUPTION DYNAMICS
SOLID EARTH > TECTONICS > VOLCANIC ACTIVITY > ERUPTION DYNAMICS > ASH/DUST COMPOSITION
HUMAN DIMENSIONS > NATURAL HAZARDS > VOLCANIC ERUPTIONS
ISO Topic Category
Access Constraints None
Use Constraints Please cite the data properly.
Data Set Progress
Distribution Media: Online Internet (HTTP)
Role: DIF AUTHOR
Email: gsfc-gcmduso at mail.nasa.gov
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2000-06-21
Last DIF Revision Date: 2013-02-11