Academy of Finland
Funding decision
Name Laaksonen, Ari
Organisation IL
Project title Aerosol intervention technologies to cool the climate: costs, benefits, side effects, and governance
Decision No. 140748
Decision date 23.08.2010
Funding period 01.01.2011 - 31.12.2014
Funding 223 997
WebFOCUS Report
Project description
In the project, climate modelling was used to study the climate impacts of black carbon emission reductions as well as aerosol-based geoengineering techniques. In addition, legal and governance aspects of geoengineering were studied. It was shown that aerosol emission reductions concentrating on black carbon are more beneficial for climate than maximal possible reductions of all aerosol emissions. Geoengineering via commercial air traffic lifted to stratospheric altitudes was shown to be rather inefficient. Marine cloud whitening was shon to be a more inefficient geoengineering technique than had been originally envisioned. Currently, there is no binding legislation regulating specifically geoengineering, however, existing international environmental laws do restrict the implementation of geoengineering technologies. Regarding the governance of geoengineering, ethical concerns are very important and will affect the acceptability of geoengineering even as a “last resort solution”.