What is the definition of a monsoon?

A monsoon is defined as a seasonal wind that notably affects regions such as the Indian Ocean and surrounding areas. The term is most famously associated with the significant seasonal changes in wind patterns that bring about heavy rainfall, particularly during the summer months when moist oceanic air is drawn inland. This phenomenon occurs due to the differential heating of land and sea, resulting in changes in atmospheric pressure that drive the winds.

The seasonal nature of monsoons is a crucial aspect of their definition, as they are not merely periodic winds or storms, but a significant climatic event that can influence agricultural practices, water supply, and ecosystem health in affected regions. The understanding of monsoons is vital in the context of climate science and weather patterns, particularly in places where they play a critical role in precipitation and seasonal weather cycles.