In the normal Walker Cell, areas of high pressure are formed over which region of the Pacific Ocean?

The correct answer stems from the functioning of the Walker Circulation, which is a crucial aspect of the climate system in the Pacific Ocean. In this circulation, the east-west atmospheric flow is defined, leading to the formation of high and low-pressure areas. Typically, areas of high pressure develop in the western Pacific, primarily near the subtropics, while the eastern Pacific is characterized by lower pressure.

In the normal state of the Walker Cell, warm water accumulates in the western Pacific, leading to evaporation and the development of low pressure in that region. Conversely, this results in cooler water in the eastern Pacific, creating higher pressure. Thus, the eastern Pacific Ocean represents the area of high pressure in the normal Walker Cell scenario.

Understanding the dynamics of the Walker Circulation is important for predicting weather patterns, especially during events like El Niño and La Niña, which significantly impact weather and climate across the Pacific and beyond.