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Solar radiation modification technologies are as controversial as they are intriguing
Reflecting the sun’s rays back to space to prevent climate change, known as solar geoengineering, is as controversial as it is intriguing.
This has put solar radiation modification (SRM) technologies – long considered taboo as they raise ethical questions without addressing the origins of climate change – back at the forefront of research. “SRM has always been a question of when [it will be deployed], not if,” Gernot Wagner, climate economist, author and co-founder of Harvard University’s solar geoengineering research programme, tells SWI swissinfo.ch in an email. If humanity as a whole or a group of powerful and sufficiently rich countries agrees that stratospheric aerosol injection on a global scale is a necessity, it can be rolled out in a few years, says Claudia Wieners, assistant professor of climate physics at Utrecht University in the Netherlands.
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