As with other tropical countries, Thailand is vulnerable to the irreversible impacts of climate change, such as temperature rise, precipitation changes, saltwater intrusion, and coastal erosion. Dr Pornampai Narenpitak, from Thailand’s National Science and Technology Development Agency, will lead a team to assess whether stratospheric aerosol injection (SAI) could reduce those risks in the country. While prior studies have shown SAI could lower surface temperatures in Thailand, it could also reduce precipitation levels. This study will compare temperature and precipitation changes under a range of scenarios. It will also include changes in precipitation patterns and seasonal variability – key factors for the agricultural sector and water management. Furthermore, it will examine changes in the sea level, which are closely tied to coastal erosion and saltwater intrusion – pressing problems, especially in the Chao Phraya River watershed and Thailand’s capital city.