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Natural World
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Last updated
July 26, 2025

Sunlight

Air pollution and sunlight research explores the complex interactions between solar radiation and atmospheric pollutants that can both help and hinder air quality improvement efforts. Studies reveal how sunlight drives photochemical reactions that create secondary pollutants like ozone, whilst also showing how solar energy technologies can reduce emissions from fossil fuel combustion. The evidence demonstrates the importance of considering meteorological factors in pollution control strategies. Explore the research documenting how sunlight affects air pollution chemistry and what this means for air quality management.
  • Pollution (aerosols) in the atmosphere cause a dimming effect, blocking surface solar radiation (Day, 2025)
  • USA, Europe and Japan entered a brightening phase around 1980  (Day, 2025)
  • China entered a brightening phase around 2000 with the introduction of new environmental policies (Day, 2025)
  • India is still in a darkening period as pollution continues at high levels (Day, 2025)

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