Robock, Alan et al. (2013): Studying Geoengineering with Natural and Anthropogenic Analogs (accepted)
Robock, Alan; MacMartin, Douglas G.; Duren, Riley; Christensen, Matthew W. (2013): Studying geoengineering with natural and anthropogenic analogs. In: Climatic Change. DOI 10.1007/s10584-013-0777-5
"[T]here are also natural and anthropogenic analogs to SRM, such as volcanic eruptions in the case of stratospheric aerosol injection and ship tracks in the case of marine cloud albedo modification. It is essential to understand what we can learn from these analogs in order to validate models, particularly because of the problematic nature of outdoor experiments."