| Acronym | Meaning |
| HF | High Frequency |
| NCEP | National Centers For Environmental Prediction |
| CCR | California Code Of Regulations |
| RRB | Risk Reduction Branch |
| DECMAIL | An Electronic Mail Facility Provided By DEC |
| SSM/I | Special Sensor Microwave Imager |
| M-UCSD | University Of California At San Diego |
| ODE | Ordinary Differential Equation |
| APS | Axial Power Shape |
| TIWEX | Tropical Institute (or Instability) Wave Experiment |