| Term | Definition / Meaning / Stand for |
| ACRIM |
Active Cavity Radiometer Irradiance Monitor |
| AIS |
Antarctic Ice Sheet |
| AMS |
American Meteorological Society |
| AMSR |
Advanced Microwave Scanning Radiometer |
| ANOM |
Anomaly |
| APR |
Average Precipitation Rate |
| APS |
Aerosol Particle Size |
| ASIMET |
Air-Sea Interaction METeorology system |
| ATWS |
Automated Tsunami Warning System |
| AURA |
Atmospheric Understanding through Radiative Analysis |
| AWOS |
Automated Weather Observing System |
| AWR |
Atmospheric Water Resource |
| AXBT |
Airborne Expendable Bathythermograph |
| AZMP |
Atlantic Zone Monitoring Program |
| BAEF |
Bulk Aerodynamic Energy Flux |
| BAER |
Brightness Aerosol Estimation Region |
| BAF |
Bulk Aerodynamic Flux |
| BBMR |
Big Bear Mountain Resorts |
| BCF |
Boundary Control Function |
| BHW |
Barometric Height Wind |
| BIM |
Barotropic Instability Mode |
| BLH |
Boundary Layer Height |
| BLISS |
Boundary Layer Integrated Stability System |
| BLT |
Boundary Layer Temperature |
| BOI |
Bulk Ozone Index |
| BT |
Brightness Temperature |
| BTS |
Brightness Temperature Surface |
| BURF |
Bulk Urban Roughness Factor |
| BW |
Bandwidth |
| BWM |
Baroclinic Wave Model |
| BWX |
Barotropic Wind Exchange |
| BZ |
Blizzard |
| BZT |
Brightness Zero Temperature |
| CC |
Cloud-to-Cloud Lightning |
| CCS |
Cloud Coverage Statistics |
| CLM |
Climatological |
| CLR |
Clear |
| CLT |
Composite Layer Temperature |
| CNS |
Convective-Nonconvective Stratiform |
| CONUS |
Contiguous United States |
| COS |
Cyclone Observation System |
| COSMIC |
Constellation Observing System for Meteorology, Ionosphere, and Climate |
| CPC |
Climate Prediction Center |
| CREW |
Community Resilience Estimates for Weather |
| CSD |
Cloud Service Data |
| CTT |
Cloud Top Temperature |
| CUP |
Convective Updraft Potential |
| CV |
Cyclone Vorticity |
| CZC |
Convergence Zone Cloud |
| DAP |
Data Archive Project |
| DCP |
Data Collection Platform |
| DIF |
Diffluence |
| DPT |
Dewpoint Temperature |
| DQA |
Data Quality Assessment |
| DRIBU |
Drifting Buoy |
| DT |
Daylight Time |
| DTA |
Dual Transmitter Analysis |
| DYT |
Daytime |
| DZM |
Diurnal Zonal Motion |
| ECMWF |
European Centre for Medium-Range Weather Forecasts |
| EFL |
Effective Freezing Level |
| EHI |
Energy Helicity Index |
| EKM |
Ekman Layer |
| ELD |
Elevated Layer Depth |
| EMC |
Environmental Modeling Center |
| ENSO |
El Nino-Southern Oscillation |
| EPIC |
Environmental Prediction in Climate |
| ESL |
Estimated Surface Level |
| ESP |
Extended Streamflow Prediction |
| ETO |
Evapotranspiration Offset |