On June 15, 1991, the Pinatubo volcano on the island of Luzon in the Philippines suddenly erupted, sending 20 million tons of carbon dioxide gas into the stratosphere, creating a haze that covered the earth like a blanket, reflecting some of the sunlight that was about to reach the earth back into space  A few years later, meteorologists found that the haze reduced the earth's surface temperature by 0 50C, while Greenhouse Effect caused by human activity had raised the earth's surface temperature by 10C a century before the eruption of Mount Pinatubo
If a reflector is placed above the atmosphere, the earth's surface can be protected from strong sunlight
 According to this, a scientist who holds the theory of artificial climate transformation believes that carbon dioxide can be filled into the atmosphere by means such as rockets, blocking part of the sun and cooling the earth's surface