Wei, L.; et al. (2018): Global streamflow and flood response to stratospheric aerosol geoengineering
Wei, L.; Ji, D.; Miao, C,; Muri, H.; Moore, J. (2018): Global streamflow and flood response to stratospheric aerosol geoengineering. In: Atmos. Chem. Phys 18 (21), S. 16033–16050. DOI: 10.5194/acp-18-16033-2018.
“ In the Southern Hemisphere, the northern parts of landmasses have lower streamflow under G4, and streamflow of southern parts increases relative to RCP4.5. We furthermore calculate changes in 30-, 50-, and 100-year flood return periods relative to the historical (1960–1999) period under the RCP4.5 and G4 scenarios. Similar spatial patterns are produced for each return period, although those under G4 are closer to historical values than under RCP4.5. Hence, in general, solar geoengineering does appear to reduce flood risk in most regions, but the overall effects are largely determined by this large-scale geographic pattern. Although G4 stratospheric aerosol geoengineering ameliorates the Amazon drying under RCP4.5, with a weak increase in soil moisture, the decreased runoff and streamflow leads to an increased flood return period under G4 compared with RCP4.5.“