When Monsoons develop as a result of?

During the summer months, solar energy heats rock and soil on land more rapidly than it heats water in the ocean as a result air overland becomes warmer than air over the adjacent ocean. The air overland therefore expands and rises so the air pressure overland at the earths surface becomes less than that over the ocean. Resulting pressure gradient causes moist air to flow from the ocean over the land. Once over the hot surface of the land the air warms becomes buoyant and rises. The rising moist air produces thunderstorms a drenched the land leading to the common association with the Word monsoon the flooding.