Cloud condensation nuclei

Rarity: Uncommon

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Notion

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Science and technology

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What Wikipedia says

Cloud condensation nuclei (CCNs), also known as cloud seeds, are small particles typically 0.2 μm, or one hundredth the size of a cloud droplet. CCNs are a unique subset of aerosols in the atmosphere on which water vapour condenses. This can affect the radiative properties of clouds and the overall atmosphere.

Excerpt from the Wikipedia article “Cloud condensation nuclei”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Jacques Descloitres, MODIS Land Rapid Response Team, NASA/GSFC, Public domain, via Wikimedia Commons.