标题： 短波辐射被氧化铝气溶胶吸收加剧了平流层变暖 显示英文标题

标题： Shortwave Absorption by Alumina Aerosol Amplifies Stratospheric Warming

摘要： 平流层的氧化铝气溶胶来自火箭发射和地球工程提议，目前被认为可以通过反射阳光和冷却对流层来对抗温室气体引起的变暖。 在这里，通过对气溶胶吸收截面的直接测量，我们报告了氧化铝迄今未知的短波吸收特性。 氧化铝的短波吸收可能抵消其太阳反射冷却作用的高达10%，如果用于地球工程，将比火箭发射产生的黑碳更温暖平流层。 显示英文摘要

摘要： Stratospheric alumina aerosols from rocket launches and geoengineering proposals are presently understood to help counteract greenhouse gas-induced warming by reflecting sunlight and cooling the lower atmosphere. Here, from direct measurement of aerosol absorption cross-sections, we report alumina's hitherto unknown shortwave absorption characteristics. Alumina's shortwave absorption could offset up to 10\% of its solar-reflective cooling, and if implemented for geoengineering, would warm the stratosphere more than black carbon from rocket launches.