Is the Somali Current Cold or Warm?

The Somali current is unique in that it is cold in summer and warm in winter. In other words, it is seasonal and the only seasonal ocean current. In summer, there is a Somali cold current flowing from lower latitude to higher latitude in the North Indian Ocean, which is different from the general distribution law. Winter is the only warm current in the world that flows from high latitude to low latitude.

The cause of the summer cold current affects the Somali current, which is the summer cold current. The main reason is that the Somali coastline deviates from the summer monsoon, which makes the coast appear offshore wind, 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 to reduce temperature and humidity and aggravate the drought in Somalia in summer.

The causes of the warm current in winter (1) are the low latitude in the North Indian Ocean, dry coastal climate, less clouds, strong solar radiation, high annual temperature and more solar radiation energy, which is the main reason for the high seawater temperature;

(2) The coastal climate is mostly dry tropical desert, and there is no inflow of rivers, so the seawater is less diluted-thus the salinity is higher;

(3) Although the sea area is open to the south, it is located near the equator, and due to the formation of circulation, the communication between the sea water here and the sea water in the southern ocean is not sufficient, so it can maintain the characteristics of high temperature and high salinity of the sea water near the equator.

Principle of ocean current mechanism Wind power is the main driving force of ocean current, and the earth's deflection force, land and sea distribution and seabed fluctuation also have different degrees of influence. For example, geostrophic bias makes ocean currents turn right in the northern hemisphere and left in the southern hemisphere; The obstruction of the mainland makes it impossible for any ocean current to flow around the earth, and the protruding part of the island or continent can make the ocean current branch.