- CCMVal – Chemistry-Climate Model Validation
- Solving the mystery of Carbon Tetrachloride (CCl4)
- Halogen chemistry and polar ozone
- SPARC International Polar Year
- Lifetime of halogen source gases
- Ozone Profile (II) – SI2N initiative
- GRIPS – GCM-Reality Intercomparison Project
- Stratospheric aerosols
- Trace Gas and Aerosol Climatologies – SPARC Data Initiative
- Tropopause Initiative (UTLS)
- Water vapour (I)
