Understanding terrestrial ecosystems response to solar radiation modification

Solar Radiation Modification (SRM) ranks among the most promising geoengineering approaches. Given that SRM scenarios are plausible, current understanding of its impacts relies heavily on model projections. However, significant risks emerge from limited knowledge and substantial model uncertainties, especially regarding terrestrial ecosystems, which are intrinsically linked to human well-being. Ecosystem response uncertainties stem from scenarios, atmospheric models, land surface models, etc. Fully coupled simulations make it impossible to disentangle these contributing factors for further refinement. To address this gap, we designed a new set of offline simulations using multiple land surface models to isolate uncertainty sources and refine the ecosystem response to SRM. We will present preliminary results from these experiments.