välisõhust

Välisõhk refers to the air that exists in the environment outside of enclosed spaces. It is a complex mixture of gases, primarily nitrogen and oxygen, along with smaller amounts of argon, carbon dioxide, and trace gases. The composition of välisõhk can vary significantly depending on geographic location, altitude, and the presence of pollutants.

Factors influencing välisõhk quality include natural phenomena such as volcanic eruptions, forest fires, and dust storms, as well as anthropogenic activities like industrial emissions, vehicle exhaust, and agricultural practices. These activities can introduce various pollutants into the atmosphere, including particulate matter, sulfur dioxide, nitrogen oxides, ozone, and volatile organic compounds.

The quality of välisõhk is a critical determinant of public health. Exposure to polluted välisõhk can lead to a range of respiratory and cardiovascular diseases, as well as other adverse health effects. Consequently, monitoring and regulating välisõhk quality are important public health and environmental concerns globally. International and national organizations establish air quality standards and implement strategies to reduce pollution and protect human well-being and ecosystems.