| Abbreviation | Definition |
|---|---|
| TIGER | Topologically Integrated Geographic Encoding And Reference |
| TIMEX | Thunderstorm Initiation Mobile Experiment |
| TINA | TPM Initiative of North America |
| TLA | Three-Letter Acronym |
| TMIC | Theoretical Meteorologist of Indissolubility Cosmopolitan (TMIC) |
| TMIC | Theoretical Meteorologist of Indissolubility & Cosmopolitan (TMIC) |
| TMQ-42 | Hydrogen Generator |
| TMQ-50 | Meteorological Station |
| TMT | Thermo - Mechanical Treatment |
| TMTCA | Truman's Meteorological & Tropical Cyclone Agency |
| TMY | Typical Meteorological Year |
| TNH | Tropical Northern Hemisphere |
| TO | Total Outburst |
| TOA | Top Of Atmosphere |
| TOMS | Total Ozone Mapping Spectrometer |
| TOP | Thermal Obviation Protection |
| TOPW | Two Ocean Plateau, Wyoming, Hydromet station |
| TOR | Tornado |
| TOTE | Tropical Ozone Transport Experiment |
| TOVS | TIROS N Operational Vertical Sounder |