kääntöpiireille

Kääntöpiireille, also known as the Tropics, refers to the geographical region of Earth situated between the Tropic of Cancer and the Tropic of Capricorn. This region is characterized by its unique climate and is roughly centered on the Equator. The Sun's rays strike this area most directly throughout the year, leading to generally warm temperatures and distinct wet and dry seasons in many locations.

The Tropic of Cancer is located at approximately 23.5 degrees north latitude, and the Tropic of Capricorn is at approximately 23.5 degrees south latitude. These lines of latitude are significant because they mark the northernmost and southernmost extent of the Sun's direct overhead rays at noon. On the summer solstice in the respective hemisphere, the Sun is directly overhead at these tropics.

The kääntöpiireille encompasses a wide range of ecosystems, including tropical rainforests, savannas, deserts, and tropical grasslands. Many of the world's most biodiverse regions are found within this zone. Politically, this area includes parts of North America, South America, Africa, Asia, and Oceania. The climate within the kääntöpiireille can vary significantly due to factors such as altitude and proximity to oceans, but the overarching characteristic is tropical warmth. The term "kääntöpiireille" itself suggests a turning point or a boundary related to the Sun's apparent movement in the sky.