In the context of meteorology, a solenoid is a tube-shaped region in the atmosphere where isobaric (constant pressure) and isopycnal (constant density) surfaces intersect, causing vertical circulation.[1][2] They are so-named because they are driven by the solenoid term of the vorticity equation.[3] Examples of solenoids include the sea breeze circulation and the mountain–plains solenoid.[4][5]
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