What are the causes of Somali warm current and Somali cold current?

Causes of Somali Cold Current: In summer, under the action of southwest monsoon, the surface seawater of Arabian Sea flows offshore, and the seawater along the nearby East African coast flows to compensate for the lost seawater and form the rising compensation current. According to the vertical decreasing law of sea surface temperature, the Somali current from low latitude to high latitude in summer has the nature of cold current. ?

The main reason for the cold current in Somalia in summer is that the Somali coastline deviates from the summer monsoon, offshore winds appear along the coast, and the low-level cold water overflows, which just goes north with the wind and becomes a cold current from low latitude to high latitude. The influence of cold current on coastal climate is cooling and reducing humidity, which aggravates the drought in Somalia in summer. ?

The causes of Somali warm current are: low latitude in the northern Indian Ocean, dry coastal climate, few clouds, strong solar radiation, high annual temperature and much solar radiation energy. This is the main reason for the high temperature of seawater; The coastal climate is mostly dry tropical desert, with no big rivers flowing in and less seawater dilution, so the salinity is high.

Although the sea area is open to the south, due to its location near the equator, it forms a circulation, and the communication between the seawater here and the seawater in the southern ocean is not sufficient, so it can maintain the characteristics of high temperature and high salt in the seawater near the equator.

Ocean current classification

Ocean current can be divided into warm current and cold current according to whether its water temperature is lower or higher than that of the sea area it flows through.

1, warm current. The water temperature is higher than the water temperature flowing through the sea area, which is the warm current, which comes from the high water temperature.

2. The cold current water temperature is lower than the surrounding water temperature, which comes from the lower water temperature. The horizontal velocity of surface ocean current varies from several centimeters per second to 300 centimeters per second, and the horizontal velocity of deep ocean current is below 10 centimeter per second. The DC speed is very small, from a few centimeters per day to dozens of centimeters per hour. Ocean currents flow in the direction of flow, which is the opposite of the definition of wind direction.