We all have heard about Global warming and its effects on the earth. However, there is also a lesser known phenomenon which is equally hurting the Mother Earth-Global Dimming! Since the start of the industrial revolution, industry and transport are emitting airborne particles to the air. These minute particles reflect the sun’s temperature back out to space. This allows less sunlight to reach the planet’s surface.
However, aerosols which are emitted from natural sources such as desert sands, sea-salt spray, wildfires and volcanoes are good for the Earth since they have a cooling effect on the planet. Though global dimming is a lesser known phenomenon but it s also affecting the Earth the same way as Global Warming is affecting. There are many factors responsible for this phenomenon such as the burning of fossil fuel by industry and internal combustion engine. The carbon dioxide is released in the atmosphere and this in turn accumulates and traps the sun’s heat within our atmosphere. This emits the pollution caused by sculpture dioxide, soot and ash. Upon entering the atmosphere, these particulars suck up solar energy reflect sunlight back into space.
The pollutants are changing the properties of clouds. It is responsible for creation of ‘brown clouds’ These ‘brown clouds’ are responsible for less rainfall. Global Dimming is the cause of many problems faced by countries such as the drought in Ethiopia in the 1970s and 80s where millions of people lost their lives. This happened due to the less then warm ocean condition of northern hemisphere which restricted the rain formation. However, global dimming is also helping our Earth as it is not allowing the global warming to show its true power. Therefore, green house gas emissions must be tackled prior to attacking the global dimming-causing pollutants. Unless it is tackled human health and ecological disasters are at greater risk of destruction.