otsonikerrosta

Otsonikerrosta is the Finnish term for the ozone layer. The ozone layer is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet (UV) radiation. It is primarily composed of ozone (O3), a molecule made up of three oxygen atoms. This layer is crucial for life on Earth as it protects living organisms from the harmful effects of UV radiation, which can cause skin cancer, cataracts, and damage to DNA.

The ozone layer is found at altitudes between approximately 15 and 35 kilometers (9 to 22 miles) above the Earth's surface. Its thickness varies depending on latitude and season, being generally thicker at the poles. The formation and destruction of ozone in the stratosphere are part of a natural cycle. However, human-produced chemicals, particularly chlorofluorocarbons (CFCs) and halons, have been found to deplete the ozone layer.

The depletion of the ozone layer leads to an increase in UV radiation reaching the Earth's surface. This phenomenon is commonly referred to as the "ozone hole," which is most pronounced over the Antarctic region during spring. International efforts, such as the Montreal Protocol, have been implemented to phase out the production and use of ozone-depleting substances. These measures have shown success, and the ozone layer is gradually recovering. Continued monitoring and research are essential to ensure its long-term health.