Which latitude is considered as the boundary for the Polar zone?

The Polar zone is defined by the latitudinal lines that encompass the extreme conditions associated with high latitude regions. The boundary for the Polar zone is generally recognized at 60 degrees latitude. This latitude marks the transition from the more temperate zones to the areas characterized by polar climates, which are defined by very cold temperatures and often significant seasonal daylight variation.

At 60 degrees latitude, one experiences conditions typical of the subarctic and Arctic regions, including long winters and short summers. This distinction is important as it affects climate, ecology, and even geographical features specific to the Polar zone. The areas beyond this latitude, particularly approaching the poles at 90 degrees, are known for their ice caps and tundra environments, where conditions are even more severe. Thus, 60 degrees serves as a critical boundary for identifying the characteristics typical of Polar regions.