IMPLICC - Implications and risks of engineering solar radiation to limit climate change

The overall goal of the IMPLICC project is to significantly increase the level of knowledge about the feasibility and implications of novel options (or 'geoengineering concepts') to limit climate change. Among these possibilities, a deliberate manipulation of the radiative budget of the Earth may allow a counterbalancing of the effects of continued greenhouse gas emissions on global temperature, but may also result in undesirable side effects for crucial parts of the Earth system and humankind. Simulations of a climate modified through geoengineering will be performed based on IPCC type future emission scenarios. Economic modelling will be used to link benefits and side effects of the studied geoengineering concepts.

A statement on geoengineering of the project leaders can be found here.

 

 

 

GeoMIP - model intercomparison

The partners of the project participate also in the model intercomparison GeoMIP, which is an initiative to better understand possible implications of geoengineering. This project does not endorse or advocate either testing or actual implementation of geoengineering. A set of simulations with different global circulation models, mainly coupled to an ocean model were defined.
Differences between the models can be taken as a first estimate on the uncertainty of the results.

  • Quadroupling the amount of CO2 in 1850 has to be balanced by a reduction of the solar constant.
  • 1% increase of CO2 concentration has to be balanced by a reduction of the solar constant.
  • Current and future enhanced greenhouse gas level are to be balanced by:
  • the injection of SO2, which causes the formation of sulfur aerosol(GeoMIP and IMPLICC).
  • the injection of sea salt (IMPLICC only).

Detailed specifications of the experiments as well as a list of publications on the results can be found on the Opens external link in current windowGeoMIP web page