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Marine Cloud Brightening

Marine Cloud Brightening:

Scientists are testing a geoengineering technique called marine cloud brightening.

  • This method involves using machines to inject tiny saltwater particles into marine stratocumulus clouds, aiming to increase their reflectivity and cool the Earth.
  • Marine cloud brightening is a scientific initiative that explores how altering atmospheric particles (aerosols) can impact cloud reflectivity.
  • By releasing tiny aerosol particles into the atmosphere, researchers aim to enhance cloud brightness, leading to increased sunlight reflection.
  • Aerosols of the right size and concentration could significantly increase the reflectivity of specific types of clouds.
  • This phenomenon is visible in satellite images of clouds brightened by ship emissions (known as “ship tracks”).

Marine Cloud Brightening Program:

  • Better understanding of the present-day effects of pollution aerosols on clouds.
  • Investigate whether aerosol particles made from sea salt could be used to intentionally reduce near-term climate warming while greenhouse gas concentrations are brought down to safer levels.
  • Understand the benefits, risks, and efficacy of the intentional use of aerosols to reduce warming through different implementations of marine cloud brightening.