| ACARS |
Aircraft Communication Addressing and Reporting System |
| ACC |
Area Control Centre |
| ADS |
Automatic Dependent Surveillance |
| AeMP |
Aeronautical Meteorology Programme |
| AFS |
Aeronautical Fixed Service |
| ALPA |
Air Line Pilots Association |
| AMDAR |
Aircraft Meteorological Data Relay |
| AmPaSAP |
AMDAR Pilot Project on Southern Africa |
| AMS |
American Meteorological Society |
| ANSEP |
Air Navigation Services Economics Panel |
| ASDAR |
Aircraft-to-satellite Data Relay |
| ASECNA |
Agency for Air Safety in Africa and Madagascar |
| ATC |
Air Traffic Control |
| ATEAM |
Advanced Techniques Applied to Aeronautical Meteorology |
| ATM |
Air Traffic Management |
| ATS |
Air Traffic Services |
| AWG |
Advisory Working Group |
| AWOS |
Automated Weather Observing Systems |
| CAeM |
Commission for Aeronautical Meteorology |
| CAS |
Commission for Atmospheric Sciences |
| CAT |
Clear Air Turbulence |
| CBS |
Commission for Basic Systems |
| CICG |
Geneva International Conference Centre |
| CIMO |
Commission for Instruments and Methods of Observation |
| COMET |
Cooperative Programme for Operational Meteorology Education and Training |
| COM/MET/OPS |
Communications/Meteorology/Operations |
| CTBT |
Comprehensive Nuclear Test Ban Treaty |
| DBCP |
Data Buoy Cooperation Panel |
| D-ATIS |
Data-link Automatic Terminal Information Service |
| D-VOLMET |
Data-link Meteorological Information for Aircraft in Flight (VOLMET) |
| EANPG |
European Air Navigation Planning Group |
| EDR |
Eddy Dissipation Rate |
| EVG |
Equivalent Vertical Gust |
| 5LTP |
Fifth WMO Long-term Plan |
| FAR |
False Alarm Rate |
| GDPS |
Global Data-processing System |
| GOS |
Global Observing System |
| GTS |
Global Telecommunication System |
| IAOPA |
International Council of Aircraft Owner and Pilot Associations |
| IATA |
International Air Transport Association |
| IAVW |
International Airways Volcano Watch |
| ICAO |
International Civil Aviation Organization |
| IDCS |
International Data-collection System |
| IFALPA |
International Federation of Air Line Pilots Associations |
| IFR |
Instrument Flight Rules |
| IPCC |
Intergovernmental Panel on Climate Change |
| ISCS |
International Satellite Communications System |
| METLINK |
Meteorological Link |
| MOR |
Meteorological Optical Range |
| MOS |
Model Output Statistics |
| MTSAT |
Multifunctional Transport Satellite |
| MWO |
Meteorological Watch Office |
| NASA |
National Aeronautics and Space Administration |
| NMHS |
National Meteorological and Hydrological Service |
| NMS |
National Meteorological or Hydrometeorological Service |
| NOAA |
National Oceanic and Atmospheric Administration |
| NTSB |
National Transportation Safety Board |
| NWP |
Numerical Weather Prediction |
| NWS |
National Weather Service |
| OCAP |
Operating Consortium of ASDARParticipants |
| OPAG |
Open Programme Area Group |
| OPMET |
Operational Meteorological Information |
| OPSG |
Operations Group |
| PC-GRIDDS |
PC-based Gridded Interactive Display and Diagnostic System |
| PIREP |
Pilot Report |
| PoD |
Probability of Detection |
| PROMET |
Working Group on the Provision of Meteorological Information Required Before and During Flight (former title) |
| PROMET |
Working Group on the Provision of Meteorological Information Required by Civil Aviation (new title) |
| RA |
Regional Association |
| RAFC |
Regional Area Forecast Centre |
| RAOB |
Rawindsonde Observation |
| RMS |
Root-Mean-Square |
| RMTN |
Regional Meteorological Telecommunication Network |
| RTH |
Regional Telecommunication Hub |
| RVR |
Runway Visual Range |
| SADIS |
Satellite Distribution System |
| SIGWX |
Significant Weather |
| SSA |
WWW System Support Activities |
| SWH |
Significant Weather Chart (high level) |
| SWL |
Significant Weather Chart (low level) |
| SWM |
Significant Weather Chart (medium level) |
| TIPS |
TAF Interactive Production System |
| TOMS |
Total Ozone Mapping Spectrometer |
| TREND |
Working Group on Training, the Environment and New Developments in Aeronautical Meteorology |
| UNCED |
United Nations Conference on Environment and Development |
| UN/FCCC |
United Nations Framework Convention on Climate Change |
| VAAC |
Volcanic Ash Advisory Centre |
| VCP |
Voluntary Cooperation Programme |
| VSAT |
Very Small Aperture Terminal |
| WAFC |
World Area Forecast Centre |
| WAFS |
World Area Forecast System |
| WMO |
World Meteorological Organization |
| WWW |
World Weather Watch |
| WWWDM |
WWW Data Management |
| Y2K |
Year 2000 |
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