This section addresses pressure systems and planetary circulations. It details the thermal and dynamic origins of global pressure belts, the tri-cellular model (Hadley, Ferrel, Polar cells), and the horizontal pressure gradient forces.
Correct Answer:
(D)
Summer season
Air pressure is defined as the pressure exerted by the weight of air on the earth’s surface. The distribution of air pressure is influenced by temperature of air at a given place. Temperature is reversely related with pressure. Due to highest temperature in summer, pressure is lowest on earth. As altitude increases the temperature and air pressure decreases. Distribution of air pressure is influenced by temperature and other kinetic factor (i.e. earth rotation, water vapor, altitude) etc.