Space-based geoengineering solutions

Colin McInnes, Russell Bewick, Joan-Pau Sanchez Cuartielles

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)peer-review

1 Citation (Scopus)


This chapter provides an overview of space-based geoengineering as a tool to modulate solar insolation and offset the impacts of human-driven climate change. A range of schemes are considered including static and orbiting occulting disks and artificial dust clouds at the interior Sun–Earth Lagrange point, the gravitational balance point between the Sun and Earth. It is demonstrated that, in principle, a dust cloud can be gravitationally anchored at the interior Lagrange point to reduce solar insolation and that orbiting disks can provide a uniform reduction of solar insolation with latitude, potentially offsetting the regional impacts of a static disk. While clearly speculative, the investigation of space-based geoengineering schemes provides insights into the long-term prospects for large-scale, active control of solar insolation.
Original languageEnglish
Title of host publicationGeoengineering of the Climate System
Subtitle of host publicationIssues in Environmental Science and Technology
EditorsRoy Harrison
Place of PublicationLondon, UK
PublisherRoyal Society of Chemistry
Number of pages26
ISBN (Print)978-1-84973-953-5
Publication statusPublished - 22 May 2014


  • geoengineering
  • asteroid exploitation
  • near Earth objects
  • space-based geoengineering


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