Atmospheric Physics
Half-life is the time required for the concentration of a substance, such as a pollutant in the atmosphere, to decrease to half of its initial amount. This concept is crucial in understanding how long pollutants persist in the atmosphere and their potential effects on air quality and climate. The half-life can vary significantly depending on factors like the chemical properties of the pollutant, environmental conditions, and the processes that remove or transform the substance in the atmosphere.
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