∘ 𝐹 ) every month of the year. Rainfall Threshold: The driest month typically sees less than 60 mm of rain, but still enough to maintain soil moisture for forests—unlike savanna climates which have more extreme dry periods. Wind Reversal: The "classic" monsoon is a seasonal shift in wind direction caused by differential heating between land and ocean. SKYbrary Aviation Safety +4 2. Atmospheric Dynamics Seasonal Wind Shifts: In summer, the land heats up faster than the ocean, creating low pressure that draws in warm, moisture-laden air from the sea (onshore flow), resulting in heavy rain. In winter, the flow reverses as the land cools, bringing dry air from the interior (offshore flow). ITCZ Migration: The climate is heavily influenced by the movement of the Intertropical Convergence Zone (ITCZ) . As the ITCZ shifts toward the poles in summer, it brings monsoonal rains. UCAR Center for Science Education +3 3. Geographical Distribution This climate is most prominent in South and Southeast Asia but is also found in other coastal tropical regions: Testbook +1 Asia: India, Bangladesh, Myanmar, Thailand, Vietnam, and the Philippines. Africa: West African coastal regions and parts of Southwestern Africa. Americas: French Guiana, and parts of northeastern and southeastern Brazil. Skybrary +4 12 sites 9.4.2: Tropical Monsoon Climate - Geosciences LibreTexts Nov 5, 2024 —
Tropical monsoons are caused by the uneven heating of land and sea during the summer months. As the land heats up, it warms faster than the sea, creating a temperature gradient. This temperature difference causes the winds to blow from the ocean to the land, bringing moist air and resulting in heavy rainfall. tropical monsoon definition