The brightening idea to light up a tropical forest all night could both solve and create problems, maybe, as suggested in this study:
“Exploration of a Novel Geoengineering Solution: Lighting Up Tropical Forests at Night,” Xueyuan Gao, Shunlin Liang, Dongdong Wang, Yan Li, Bin He, and Aolin Jia, Earth System Dynamics, vol. 13, 2022, pp. 219–230. The authors explain:
“Plants primarily conduct photosynthesis in the daytime, offering an opportunity to increase photosynthesis and carbon sink by providing light at night. We used a fully coupled Earth system model to quantify the carbon sequestration and climate effects of a novel carbon removal proposal: lighting up tropical forests at night via lamp networks above the forest canopy…. This study suggests that lighting up tropical forests at night could be an emergency solution to climate change, and carbon removal actions focused on enhancing ecosystem productivity by altering environmental factors in the short term could induce post-action CO2 outgassing….
“However, it has strong side effects after the termination of nighttime lighting. In addition, local ecosystem changes could have negative impacts on local wildlife. Practical issues [do exist and need to be considered].