| Acronym | Meaning |
![](file.png) | NAVAID | Navigation Aid |
![](file.png) | NAVSTAR | NAVigation Signal Timing And Ranging System |
![](file.png) | NAWAU | National Aviation Weather Advisory Unit |
![](file.png) | NAWPG | National Aviation Weather Products Generator |
![](file.png) | NBDRC | New Building Design Review Committee |
![](file.png) | NBS | National Bureau Of Standards |
![](file.png) | NCAB | Network Coordination And Advisory Board |
![](file.png) | NCAR | N/A |
![](file.png) | NCAR | National Center For Atmospheric Research |
![](file.png) | NCAR/UCAR | National Center For Atmospheric Research |
![](file.png) | NCC | National Climate Center |
![](file.png) | NCDC | National Climatic Data Center |
![](file.png) | NCDS | NASA Climate Data System |
![](file.png) | NCEP | National Centers For Environmental Prediction |
![](file.png) | NCF | Network Control Facility |
![](file.png) | NCGIA | National Center For Geographic Information And Analysis |
![](file.png) | NCHPC | National Consortium For High Performance Computing |
![](file.png) | NCIS | Nadir Climate Interferometer Spectrometer |
![](file.png) | NCMC | Non-Classical Mesoscale Circulations |
![](file.png) | NCMRWF | India's National Centre For Medium Range Weather Forecasting |
![](file.png) | NCOM | NCAR CSM Ocean Model |
![](file.png) | NCP | Network Control Program |
![](file.png) | NCPO | National Climate Project Office |
![](file.png) | NCRP | National Council On Radiation Protection And Measurement |
![](file.png) | NCSA | National Center For Supercomputing Applications |
![](file.png) | NCSNET | NASCOM Custom Subnetwork |
![](file.png) | NCTM | National Council Of Teachers Of Mathematics |
![](file.png) | ND | Near-dedicated |
![](file.png) | NDARB | North Dakota Atmospheric Resources Board |
![](file.png) | NDBC | National (or NOAA) Data Buoy Center |
![](file.png) | NDC | National Data Center |
![](file.png) | NDSC | Network For Detection Of Stratospheric Change |
![](file.png) | NDT | Non-destructive Testing |
![](file.png) | NDTE | North Dakota Tracer Experiment |
![](file.png) | NDTP | North Dakota Thunderstorm Project |
![](file.png) | NDVI | Normalized Difference Vegetation Index |
![](file.png) | NDVI | Greeness Index From Satellites |
![](file.png) | NEAQS | New England Air Quality Study |
![](file.png) | NEC | Norman (Oklahoma) Evaluation Committees |
![](file.png) | NEC | Nippon Machines |
![](file.png) | NECHE | Northeast Colorado Hail Experiment |
![](file.png) | NEDRES | National Environmental Data Referral System |
![](file.png) | NEEDS | N/A |
![](file.png) | NEHRP | National Earthquake Hazard Reduction Program |
![](file.png) | NEIC | National Earthquake Information Center |
![](file.png) | NEM | NWP Explicit Microphysics |
![](file.png) | NEMS | Nimbus E Microwave Spectrometer |
![](file.png) | NENA | NOAA's Northeast-North Atlantic 2004 |
![](file.png) | NEONS | Navy Environmental Operational Nowcast System |
![](file.png) | NEPA | National Environmental Policy Act |