Here's a breakdown:

* Tropical Rainforest Climate: This climate dominates the Amazon Basin, characterized by high temperatures (25-30°C) year-round and very high rainfall (over 2000 mm annually).

* Tropical Savanna Climate: Found to the north and south of the rainforest, this climate has distinct wet and dry seasons, with warmer temperatures than the rainforest.

* Tropical Monsoon Climate: Primarily found on the northern coast of South America, this climate has a distinct wet season (summer) and a dry season (winter).

These tropical climates are heavily influenced by the Intertropical Convergence Zone (ITCZ), a band of low pressure that shifts throughout the year, bringing heavy rainfall to the region.