WMO's Global Atmosphere Watch (GAW) programme monitors atmospheric composition changes, including greenhouse gases, ozone, and aerosols, to support scientific assessments like those of the _____ on climate change.
- UNEP
- IPCC
- WHO
- FAO
Answer: IPCC
GAW provides high-quality, long-term atmospheric data essential for IPCC assessments. By tracking trends in CO2, methane, ozone-depleting substances, and aerosols, GAW underpins evidence-based climate policy and international agreements like the Paris Agreement.