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New Mechanism for Cloud-Forming Particles Discovered in Upper Atmosphere
A new mechanism for the formation of tiny atmospheric particles (aerosols) has been identified in the upper troposphere (the lowest layer of Earth's atmosphere).
The intrusion of stratospheric air (from the layer above the troposphere) into the troposphere triggers the formation of these new particles
This finding reveals a previously unknown way in which these particles form in the upper troposphere.
This process of NPF (new particle formation) likely occurs frequently and covers large geographic regions.
These tiny particles (less than one micron in diameter) are abundant in the troposphere.
They act as condensation sites for water vapor, which is crucial for cloud formation.
They play a role in Earth's radiative balance, influencing how much heat the planet absorbs and reflects.
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