China's pollution cleanup was absolutely necessary to save lives and improve public health. The country faced a crisis with air pollution leading to serious widespread fatalities each year, making aggressive action unavoidable. The temporary warming effect is a small price to pay for protecting human health and demonstrates that environmental policies must prioritize immediate threats to human welfare.
This research reveals the dangerous unintended consequences of environmental policies that weren't properly coordinated with climate action. Removing aerosols without simultaneously cutting greenhouse gases has accelerated global warming at a critical time. The findings highlight how complex climate interventions require comprehensive planning to avoid making the climate crisis worse.