The term refers to a specific type of climate found in regions generally situated between the Tropic of Cancer and the Tropic of Capricorn. These areas are characterized by high temperatures and significant rainfall throughout the year. A prime example is the Amazon rainforest in South America, known for its consistent warmth and abundant precipitation which sustains its diverse ecosystem.
Understanding climate patterns within these zones is crucial for studying population distribution, agricultural practices, and economic development. The consistent warm temperatures and reliable rainfall allow for the cultivation of certain crops like bananas, coffee, and cacao, which significantly impact the economies of countries within these regions. Historically, these conditions have also influenced settlement patterns and building designs, adapted to manage the heat and humidity.