Stratospheric aerosol injection (SAI), is a type of geo-engineering technique involving Solar Radiation Management (SRM).
About Geo-Engineering
- Itis the intentional large-scale intervention in the Earth’s climate system to counter climate changes.
- It is of two Types:
- Carbon Dioxide Removal (CDR): Approaches, practices, and technologies that remove and durably store CO2 from the atmosphere.
- E.g., Direct air capture and carbon storage (DACCS), Biochar (can be used as a growing medium aiding vertical farming, promote nitrogen fixation, water retention).
- Solar Radiation Management (SRM): It refers to deliberate, large-scale actions intended to decrease global average surface temperatures by increasing the reflection of sunlight away from the Earth.
- Carbon Dioxide Removal (CDR): Approaches, practices, and technologies that remove and durably store CO2 from the atmosphere.
About SAI
- SAI is a type of SRM that mimics the planet cooling effects of volcanic eruptions by injecting sulfur dioxide (SO2) directly into the stratosphere where it forms sunlight-reflecting sulfate aerosols.
- Aerosols are small particles suspended in the atmosphere like mineral dust, smoke, volcanic ash, etc.
Other SRM Techniques
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