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

Which of the following definitions best describes 'nocturnal cooling'?

A. A wave disturbance in which buoyancy (or reduced gravity) acts as the restoring force on parcels displaced from hydrostatic equilibrium.
B. A sea breeze. In southwest France it refers to a southwesterly sea breeze that sets in about 9 A.M., reaches it maximum towards 2 P.M. and ceases about 5 P.M.
C. The elevation band on a mountain or orographic barrier that receives the greatest precipitation for a seasonal or annual average.
D. The lowering of temperature during night time, due to a net loss of radiant energy.

Answer: The lowering of temperature during night time, due to a net loss of radiant energy.