| Abbreviation | Definition |
|---|---|
| LDS | Lightning Detection System |
| LES | Large Eddy Simulation |
| LFO | Low Frequency Oscillation |
| LGP | Low Ground Pressure |
| LI | Lift Index |
| LIA | Little Ice Age |
| LISN | Low-latitude Ionospheric Sensor Network |
| LITE | Lidar In-space Technology Experiment |
| LLJ | Low Level Jet stream |
| LLJ | Lower- Level Jet |
| LLMM | Low Level Meteorological Model |
| LLWAS | Low Level Wind Shear Alert System |
| LLWS | Low Level Wind Shear |
| LM | Low Melt |
| LMA | Low Moisture Activity |
| LMA | Low Moisture Affinity |
| LMAO | Land Mail Art Object |
| LMCD | Log Mean Temperature Difference |
| LMNE | Log-Mean Normalized Error |
| LMS | Light, Moderate, Severe |