I've always been open about my belief that having +research on SRM is good, so to me the ARIA program is very welcome. Most of the funded research is about expanding our understanding of potential outcomes through modeling, obs and engagement. Yes, there are some outdoor scientific experiments:
theguardian.com
Real-world geoengineering experiments revealed by UK agency
Trials will test ways to block sunlight and slow climate crisis that threatens to trigger catastrophic tipping points
