Global Dimming

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Definition
Where the amount of sunlight falling on the Earth is decreasing
Location
Global scale
Causes
Aerosols have been seen as a major cause. (Pollution)

Burning of fossil fuels by industry emits by-products such as Sulfur Dioxide, Soot and Ash.

Aerosols absorb solar energy and reflect radiation.

Polluted clouds are formed and are more reflective. (Brown clouds).

Vapors emitted from planes also cause heat reflection and global dimming.
Impacts
Acid rain and smog.

Respiratory diseases in humans.

Water in Northern Hemisphere has become colder due to reflection of solar energy.

The above point leads to slower evaporation leading to a reduction in rain in certain parts of the globe leading to drought and famine.

Soviet Union - biggest drop in sunlight was recorded (20% drop).
Management
Clean Air Act in USA.

COP21 management.
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