Atmospheric dissipation was an event that dissipated the atmosphere of a planet, sometimes within thirty-eight hours.

The rate at which atmospheric dissipation progressed was unpredictable. After the breakdown of the stratosphere, plasmonic reactions broke down the mesosphere, after which ionic reactions broke down the troposphere, leaving the planet with no atmosphere at all and unable to support life.

An event like this generated a plasmonic energy burst which could interfere with the operational status of an orbiting starship. Power surges and systems failures could happen randomly and keeping a transporter lock on someone might be difficult. The dissipation also bombarded the planet itself with radiation from which only a deflector shield could protect someone.

An atmospheric dissipation could not be stopped, but an atmospheric shield could be used to contain the atmosphere within a limited area.

This happened to Boraal II in 2370 and changed it from a M-class world to a lifeless and barren rock. (TNG: "Homeward")

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