资源环境科技发展态势分析平台

Despite efforts to reduce greenhouse gas emissions, many countries’ efforts reduce emissions are falling short of targets needed to limit global warming and its associated negative impacts. While there is widespread agreement that continued efforts to reduce emissions and adapt to climate change are paramount, there is growing interest in “climate intervention” or “geoengineering” approaches, including those that reduce global warming by reflecting sunlight to cool Earth. In a workshop held in August 2019, the National Academies convened experts to inform a larger study on solar geoengineering. Workshop participants discussed the current status of, and future directions for research on solar geoengineering strategies, including stratospheric aerosol injection, marine cloud brightening, and cirrus cloud thinning. This publication summarizes the presentations and discussions for the workshop.