Reusable Rockets: A Safer Path to Solar Geoengineering?

IO_AdminUncategorized1 month ago41 Views

swift Summary

  • Reusable rockets could deliver sun-reflecting aerosols to teh top of the stratosphere, potentially reducing climate risks associated with lower-altitude solar geoengineering.
  • Traditional stratospheric aerosol injection (SAI) involves using high-flying planes at 20 km altitude but carries risks like warming in tropical stratospheres,disruption of jet streams,and delayed ozone recovery by up to 50 years.
  • A study from Jinan University suggests injecting aerosols at 50 km altitude could enhance cooling effects while minimizing such risks: aerosols would stay aloft longer, reducing heat buildup in critical areas and only delaying ozone repair by five years.
  • Achieving this would require up to 80 reusable hydrogen-powered rockets launching every two days,a feat considered technologically feasible but expensive.
  • Critics argue that costs are significantly higher than alternative approaches and that other inherent geoengineering risks remain unresolved.

Indian Opinion Analysis
The potential use of reusable rockets for high-altitude solar geoengineering represents a novel avenue in addressing global climate challenges; however, its implications for India require careful consideration. As one of the most climate-vulnerable nations, India faces acute risks tied to global warming and must balance climate innovation with fairness and sustainability concerns. This technology shows promise in reducing specific atmospheric disturbances linked to conventional SAI methods but remains speculative due to costs and possible unintended consequences like sudden temperature spikes if interventions halt unexpectedly.

India’s policymakers should focus on strengthening contributions toward long-term solutions like renewable energy adoption while participating thoughtfully in international dialogues on risky technologies like geoengineering that may impact weather systems critical for Indian agriculture or monsoons.

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