How do ocean currents affect the weather?

Ocean currents are also called ocean currents. In addition to tidal movement caused by tidal force, seawater flows along a certain path on a large scale. The factors that cause ocean current movement can be wind or uneven distribution of seawater density caused by hot salt effect. Sea water flows horizontally and regularly in a certain direction. Ocean current is the main regulator of the thermal environment on the earth's surface. Ocean currents can be divided into warm currents and cold currents. If the water temperature of ocean current is higher than the water temperature reaching the sea area, it is called warm current; If the water temperature of the ocean current is lower than the water temperature reaching the sea area, it is called a cold current. Generally, the ocean current from low latitude to high latitude is warm current, and the ocean current from high latitude to low latitude is cold current. Sailing along ocean currents can save fuel and speed up. When cold and warm air currents meet, sea fog often forms, which is not conducive to maritime navigation. In addition, ocean currents carry icebergs south from the Arctic, posing a great threat to maritime shipping. Generally speaking, warm current will increase temperature and humidity, while cold current will decrease temperature and humidity.

Influence on temperature Ocean current transfers heat from low latitude to high latitude, especially the contribution of warm current. The influence of ocean current on the temperature on both sides of the continent at the same latitude: the coastal temperature of the continent where warm current passes is high, and the coastal temperature of the continent where cold current passes is low.

Influence on precipitation and fog: heat and water vapor are transported upward with warm current, which makes stratification unstable, air humidity increases, and precipitation is easy to occur. The cold current produces inversion, stratification is stable, water vapor is not easy to be transported upward, evaporation is weak, and the relative humidity of the lower layer is sometimes very high, but it can only become fog, not rain.