| Acronym | Meaning |
![](file.png) | AQCA | Air Quality Control Act |
![](file.png) | AQCR | Air Quality Control Region |
![](file.png) | AQCR | Air Quality Control Regulation |
![](file.png) | AQD | Atmospheric Quality Division |
![](file.png) | AQD | Air Quality Digest |
![](file.png) | AQM | Atmospheric Quality And Modification |
![](file.png) | AQMA | Air Quality Maintenance Area |
![](file.png) | AQSM | Air Quality Simulation Model |
![](file.png) | AR | Administrative Requirement |
![](file.png) | ARA | Appletalk Remote Access |
![](file.png) | ARAC | Atmospheric Release Advisory Capability |
![](file.png) | ARAR | Applicable Or Relevant And Appropriate |
![](file.png) | ARBI | Adjusted Running Book Inventory |
![](file.png) | ARC | Ames Research Center |
![](file.png) | ARC | Antarctic Research Center |
![](file.png) | ARC | Applied Research Corporation |
![](file.png) | ARC | Accelerating Rate Calorimetry |
![](file.png) | ARCAS | All-purpose Rocket For The Collection Of Atmospheric Soundings |
![](file.png) | ARCC | American Rivers Conservation Council |
![](file.png) | ARCNET | Attached Resource Computer Network |
![](file.png) | ARCSS | Arctic Systems Science |
![](file.png) | ARCSYM | Arctic Regional Climate Simulation |
![](file.png) | ARD | Air & Radiation Division |
![](file.png) | ARDEC | Army Armament Research And Development Engineering Center |
![](file.png) | AREA | File Format Used For Graphic Images By The McIDAS Application |
![](file.png) | AREAL | Atmospheric Research And Exposure Assessment Lab |
![](file.png) | ARES | Advanced Reentry System |
![](file.png) | ARF | Aviation Route Forecast |
![](file.png) | ARG | Appointments Review Group |
![](file.png) | ARG | American Resources Group |
![](file.png) | ARG | Accident Response Group |
![](file.png) | ARGOS | Data Collection And Location System |
![](file.png) | ARGOS | French Satellite-borne Data Relay And Platform Location System |
![](file.png) | ARGUS | ARGonne Unified Safeguards |
![](file.png) | ARI | Alternate Rod Insertion |
![](file.png) | ARIES | Automated Retirement And Integrated Extraction System |
![](file.png) | ARIMP | Atmospheric Radiation Investigation And Measurements Project |
![](file.png) | ARIN | Aerospace Resource Information Network |
![](file.png) | ARINC | Aeronautical Radio |
![](file.png) | ARIS | Airborne Research Instrumentation System |
![](file.png) | ARISTOTELES | Applications And Research Involving Space Technologies Observing The Earth's Field From Low Earth Orbiting Satellite |
![](file.png) | ARL | Air Resources Laboratory |
![](file.png) | ARL | Army Research Laboratory |
![](file.png) | ARM | Atmospheric Radiation Measurement Program |
![](file.png) | ARM-CART | Atmospheric Radiation Measurement-Clouds And Radiation Testband |
![](file.png) | ARMAR | Airborne Rain Mapping Radar |
![](file.png) | ARO | Army Research Office |
![](file.png) | ARPA | Advanced Research Projects Agency |
![](file.png) | ARPA | Archaeological Resources Protection Act |
![](file.png) | ARPANET | Advanced Research Projects Agency Network |