Task: Class Definition Understanding (ontology: Earth_Environment/SWEET)

Which of the following definitions best describes 'capping inversion'?

A. An air layer with its base at the ground surface and in which temperature increases with height. These often form at night over land under clear skies and are statically stable. See inversion, lapse rate.
B. A decrease in the central pressure of a pressure system as depicted on a constant- height chart, or an analogous decrease in height on a constant-pressure chart; the opposite of filling.
C. A statically stable layer at the top of the atmospheric boundary layer.
D. The sound emitted by rapidly expanding gases along the channel of a lightning discharge.

Answer: A statically stable layer at the top of the atmospheric boundary layer.