Discussion
Temperature at \( 100 \) m is \( 15.0 \) degrees and at \( 300 \) m is \( 16.4 \) degrees. This layer is
Answer: B
Correct answer: An inversion
Temperature rises from \( 15.0 \) degrees at \( 100 \) m to \( 16.4 \) degrees at \( 300 \) m - an increase of \( 1.4 \) degrees over \( 200 \) m of ascent. Temperature increasing with height is the definition of an inversion.
The lapse rate is negative, \( -7 \) degrees per kilometre, so the layer is far more stable than the neutral case and vertical motion is strongly suppressed. Superadiabatic and unstable both require the temperature to fall faster than \( 9.8 \) degrees per kilometre, which is the opposite of what is observed here.
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