Stratospheric Aerosol Injection (SAI)

News: A new study has made the controversial concept of Stratospheric Aerosol Injection (SAI) more technically and economically feasible by suggesting the use of modified existing aircraft instead of waiting for expensive high-altitude planes. Stratospheric Aerosol Injection (SAI).

About Stratospheric Aerosol Injection (SAI)

• It is a proposed climate engineering technique that involves spraying tiny reflective particles into the stratosphere — the upper layer of Earth’s atmosphere — to reflect sunlight and cool the planet.
• Purpose: The goal is to reduce global warming by mimicking the cooling effects observed after volcanic eruptions, which release natural aerosols into the atmosphere. These aerosols scatter incoming solar radiation in the stratosphere, causing less solar energy to be absorbed by the troposphere.
• Process: SAI is implemented by spraying large quantities of tiny reflective particles into the stratosphere, thereby cooling the planet by reflecting sunlight back into space.
• Method: Reflective particles such as sulfur dioxide, salt, or calcium carbonate would be dispersed from aircraft, rockets, artillery, or pumped through high-altitude balloons or hoses. These particles form a reflective layer in the stratosphere that bounces sunlight back into space, reducing the Earth’s surface temperature.