| Abbreviation | Definition |
|---|---|
| ANC | Acid Neutralizing Capability |
| ANCA | Accelerated Neighborhood Climate Action |
| AOGCM | Atmosphere Ocean Global Climate Model |
| AOPC | Atmospheric Observations Panel For Climate |
| APCCU | Air Pollution and Climate Change Unit |
| APCV | Antarctic Peninsula Climate Variability |
| AQCI | Air quality climate interactions |
| AR6 | Sixth Assessment Report |
| ASI | Airspeed Indicator |
| ATAC | All Terrain All Climate |
| ATOC | Acoustic Thermometry of Ocean Climate |
| ATOC | Ageacoustic Thermometry Of Ocean Climate |
| AZCR | Agricultural Zoning of Climate Risk |
| BACC | BALTEX Assessment of Climate Change |
| BACC | Bay Area Climate Collaborative |
| BACCI | Biosphere Aerosol Cloud Climate Interactions |
| BBCC | Bert Bolin Centre for Climate |
| BCC | Business and Climate Change |
| BCCAS | Bangladesh Climate Change Adaptation Survey |
| BCDP | Big Climate Data Pipeline |