VAAC: acronyms and abbreviations
Acronyms and abbreviations used within the London VAAC website
| AIMMS | Aircraft Integrated Meteorological Measurement System |
| AOD | Aerosol Optical Depth |
| ATD | Arrival Time Difference |
| CAA | Civil Aviation Authority |
| CAPS | Cloud and Aerosol Spectrometer |
| CONC | Concentration |
| CSV | Comma Separated Value |
| DfT | Department for Transport |
| EUR | European |
| FAAM | Facility for Airborne Atmospheric Measurement |
| FIR | Flight Information Region |
| FL | Flight Level |
| IAVWOPSG | International Airways Volcano Watch Operations Group |
| ICAO | International Civil Aviation Organization |
| IMO | Icelandic Meteorological Office |
| IR | Infrared |
| IUGG | International Union of Geodesy and Geophysics |
| LCBR | Laser Cloud Base Recorder |
| LIDAR | LIght Detecting And Ranging |
| MetUM | Met Office Unified Model |
| MOCCA | Met Office Civil Contingencies Aircraft |
| MoU | Memorandum of Understanding |
| NAME | Numerical Atmospheric-dispersion Modelling Environment |
| NAT | North Atlantic |
| NATS | National Air Traffic Services |
| NCAS | National Centre for Atmospheric Science |
| NERC | Natural Environment Research Council |
| NMS | National Meteorological Services |
| POLY | Polygon |
| RADAR | RAdio Detection And Ranging |
| SFC | Surface |
| UTC | Universal Time Constant |
| UV | Ultraviolet |
| VA | Volcanic Ash |
| VAA | Volcanic Ash Advisory |
| VAAC | Volcanic Ash Advisory Centre |
| VAAG | Volcanic Ash Advisory Group |
| VAG | Volcanic Ash Graphic |
| VAORG | Volcanic Ash Observations Review Group |
| VASAG | Volcanic Ash Scientific Advisory Group |
| VOLCEX | Volcanic Ash Exercise |
| VT | Validity Time |
