| Acronym | Meaning |
 | MEF | Master E-mail Facility |
| NRCC | National Research Council Of Canada |
| ANSI | American National Standards Institute |
| S&R | Search And Rescue |
| LBJSC | Lydon B Johnson Space Center |
| AVARS | Aircraft Vertical Accelerometer Reports |
| SEM | Space Environment Monitor |
| KMA | Korean Meteorological Administration |
| OWWS | Office Of World Weather Systems |
| BINET | Bistatic Doppler Radar Receiver Network |
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