| Acronym | Meaning |
![](file.png) | PID | Prototype International Directory |
![](file.png) | PIDC | Precision Instrument Development Center |
![](file.png) | PIFM | Practical Improved Flux Method |
![](file.png) | PILPS | Program For Intercomparison Of Land Surface Parameterization Schemes |
![](file.png) | PIN | Power Input |
![](file.png) | PIPOR | Program For International Polar Ocean Research |
![](file.png) | PIPOR | Programme Of International Polar Oceans Research |
![](file.png) | PIRAC | PC-based Integrated Radar Acquisition Card |
![](file.png) | PIRAQ-III | PC-based Radar Acquisition ? 3rd Generation |
![](file.png) | PIREP | Pilot Weather Report |
![](file.png) | PIREPS | Pilot Reports |
![](file.png) | PISP | Polar Ice Sheet Program |
![](file.png) | PIXE | Proton Induced X-ray Emission |
![](file.png) | PLDS | Pilot Land Data System |
![](file.png) | PM2.5 | Particulate Matter With Mass Median Aerodynamic Diameter Less Than 2.5 Micrometers |
![](file.png) | PMA | Platform Management Application |
![](file.png) | PMB | Performance Measurement Baseline |
![](file.png) | PMEL | Pacific Marine Environment Laboratory |
![](file.png) | PMIP | Paleoclimate Modeling Intercomparison Project |
![](file.png) | PMR | Pressure Modulator Radiometer |
![](file.png) | PMR | Pacific Missile Range |
![](file.png) | PMS | Particle Measuring System |
![](file.png) | PMS | Particle Measuring Systems |
![](file.png) | PMS | Performance Measurement System |
![](file.png) | PMS | Platform Management System |
![](file.png) | PNA | Pacific/North American |
![](file.png) | PNR | Profiler Network Review |
![](file.png) | POAM | Polar Ozone And Aerosol Measurement |
![](file.png) | POC | Proof Of Concept |
![](file.png) | POC | Project Operations Center |
![](file.png) | POCIBO | Polar Circling Balloon Observatory |
![](file.png) | POCM | Parallel Ocean Climate Model |
![](file.png) | POD | Probability Of Detection |
![](file.png) | POES | Polar Operational Environmental Satellite |
![](file.png) | POGO | Polar Orbiting Geophysical Observatory |
![](file.png) | POISE-98 | POlarimetric Instrument For Solar Eclipse-98 |
![](file.png) | POLARIS | Photochemistry Of Ozone Loss In The Arctic Region In Summer |
![](file.png) | POLEX | Polar Experiment |
![](file.png) | POP | Parallel Ocean Program |
![](file.png) | POP | Photochemical Oxidation And Products |
![](file.png) | POP | Probability Of Precipitation |
![](file.png) | POSIX | Portable Operating System Interface For Computer Environments |
![](file.png) | PP | Parts Per |
![](file.png) | PPB | Parts Per Billion |
![](file.png) | PPHM | Parts Per Hundred Million |
![](file.png) | PPI | Plan-postition Indicator |
![](file.png) | PPM | Parts Per Million |
![](file.png) | PPMV | Parts Per Million By Volume |
![](file.png) | PPO | Profiler Program Office |
![](file.png) | PPP | Point-to-Point Protocol |