geoengineering cartoon


It looks like a very cool term and sounds like it has the potential to save us all from the effects of global warming. The concept is simple. It functions by creating a global dimming (i.e. cooling) effect to counter global warming, thereby mitigating climate change. This is done with the effect of sulfate aerosols as they reduce the amount of incoming solar radiation.

Another method to fight global warming would be to remove carbon dioxide from the atmosphere by seeding oceans with iron particles which stimulate phytoplankton growth, which in turn suck up carbon dioxide (Horton, 2015). However, because this blog is on global dimming and its main cause – aerosols, I will thus further focus on the former geoengineering approach of using aerosols in future posts.

Geoengineering map

(click for a larger and clearer image)

The above image shows a map of the various kinds of geoengineering projects around the world. This documentation demonstrates the expanding scope of research and experimentation in the large-scale manipulation of climate systems and hints about its increasing popularity among governments who are unable or unwilling to dramatically reduce their carbon emissions.


Horton, J. (2015). How can adding iron to the oceans slow global warming?HowStuffWorks. Retrieved 9 February 2015, from