Secondary organic materials (SOM) in the atmosphere form two distinct types, liquids and jellies, and these airborne particles have begun to react with gases in the atmosphere. In the last 20 years’ research and climate modeling, these SOM particles have been assumed to drift as liquids. In a liquid phase, the organic materials would absorb other compounds like ammonia or ozone very easily and then progress through a series of chemical changes, known as chemical aging, to form particles that reflect or absorb sunlight, or form clouds.



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