What are the benefits of fog?

Fog is a phenomenon that a large number of small water droplets or small ice crystals float in the air layer near the ground, which leads to the decrease of visibility to a certain extent. In real life, fog is closely related to people. The diffuse fog has a very serious impact on land and air traffic. According to the statistics of civil aviation department, about 13% flights can't take off on time every year, of which 54% are due to weather, and fog and low visibility are the most common weather reasons.

Moreover, the sea fog in coastal areas does more harm than good to the local area. Sea fog not only affects navigation, but also brings many disadvantages to marine culture and agricultural production. If the sea fog reduces the sunshine for a long time and reduces the transparency of seawater, it is easy to reduce the production or even rot of kelp and other aquaculture products. When wheat blooms and matures, sea fog will cause rust for a long time. Because the condensed nuclei in sea fog are mostly salt particles, all kinds of crops can suffer from salt damage. Therefore, shelterbelts are planted along the coast of many countries to filter sea fog and protect farmland crops adjacent to the ocean.

However, inland fog is still beneficial to alleviate crop drought. Fog at night in autumn and winter can slow down the drop of ground temperature and reduce frost. In addition, the "famous camellia" is mainly due to the high mountain fog and mild temperature change, which slows down the growth of tea and people can pick it in time, so the leaves are tender, the color is clear and the taste is mellow. Of course, the humid and cool climate is also conducive to the growth of many precious Chinese herbal medicines; Many natural wonders have also become unique tourism resources.