Albedo is the reflection of sunlight back into space, mainly from bright surfaces such as clouds, snow, ice and atmospheric particles, providing an essential planetary cooling shield.
However, a 2021 NASA study found that the excess of incoming sunlight over outgoing radiation, known as Earth’s energy imbalance, has doubled since 2005. Satellite data reported in this study shows our planet now reflects 1.7 percent less sunlight than 20 years ago, and the decline is speeding up, amplifying global warming.
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https://thehill.com/opinion/energy-environment/5357702-albedo-loss-global-warming/
