What was before the formation of the Sahara Desert?

How did the Sahara Desert form?

Sahara.

Reasons for its formation: 1. North Africa is located in the Tropic of Cancer.

On both sides, it is controlled by the subtropical high-profile air cluster pressure zone all year round, and the dry and hot downdraft prevails, and the African continent is narrow in the south and wide in the north, and the range controlled by the subtropical high pressure belt is large, and the dry and hot area is wide.

2. North Africa and the Asian continent.

Nearby, northeast trade winds blow from the eastern land, which is less likely to form precipitation, making North Africa even drier.

3. The coastline of Qingying in North Africa is straight, and there is the Ethiopian plateau on the east side, which plays a blocking role in the humid airflow, so that the vast inland areas cannot be affected by the impurity of the ocean.

4. The Canary cold current passes through the west coast of North Africa, which has a cooling and dehumidifying effect on the western coastal areas and makes the desert approach the west coast.

The reason for the formation of the Sahara Desert should be due to geographical changes, and this climate is the main reason for the formation of the Sahara Desert.

The climate of the Sahara Desert is controlled by the north-south transition of the kamikaze belt of the Sinjuki, with many extremes occurring. It has the highest evaporation rate in the world and has the largest area recorded for several years without frontal rainfall.

There are five main reasons for the formation of the Sahara Desert: because it is located on both sides of the Tropic of Capricorn, it is controlled by the subtropical high pressure zone all year round, and the dry and hot downdraft prevails, and the northern part of the African continent is wide, and the range controlled by the subtropical high pressure belt is large, and the area of solid dry heat is wide; North Africa is close to the Asian continent, and the northeast trade winds blow from the eastern land, which is not easy to form precipitation, making North Africa even drier. The coastline of North Africa is too straight, with the Ethiopian plateau on the east side, which prevents the moist air flow from entering the interior; The Canary cold current passes through the west coast of North Africa, which has a cooling and dehumidifying effect on the western coastal areas, bringing the desert closer to the west coast. The terrain of North Africa is relatively homogeneous, with flat terrain and small undulations, plus a single climate, forming a large desert area.

The formation of the Sahara Desert is due to the prevailing downdrafts controlled by the subtropical high, the cooling and dehumidification of cold snaps, the drying of northeast trade winds, and the dry climate blocked by mountain ranges.

Affected by the subtropical high pressure zone.

Located on both sides of the Tropic of Cancer, it is controlled by the subtropical high pressure zone all year round, and the dry and hot downdraft prevails, and the African continent is narrow in the south and wide in the north, with a large range of pressure zone control and a wide dry and hot area.

Trade winds influence. North Africa is close to the Asian continent, and the northeast trade winds blow from the eastern land, which is not easy to form precipitation, making North Africa even drier.

Mountains block. The coastline is straight, with the Ethiopian plateau on the east side, which acts as a barrier to the humid air currents, so that the vast inland area is not affected by the sea, and the climate is dry.

Cold snap effects. The Canarian cold current passes through the west coast, which cools and dehumidifies the western coastal areas and brings the desert closer to the west coast.

There are five main reasons for the formation of the Sahara Desert: because it is located on both sides of the Tropic of Capricorn, it is controlled by the subtropical high pressure zone all year round, and the dry and hot downdraft prevails, and the northern part of the African continent is wide, and the range controlled by the subtropical high pressure belt is large, and the area of solid dry heat is wide; North Africa is close to the Asian continent, and the northeast trade winds blow from the eastern land, which is not easy to form precipitation, making North Africa even drier. The coastline of North Africa is too straight, with the Ethiopian plateau on the east side, which prevents the moist air flow from entering the interior; The Canary cold current passes through the west coast of North Africa, which has a cooling and dehumidifying effect on the western coastal areas, bringing the desert closer to the west coast. The terrain of North Africa is relatively homogeneous, with flat terrain and small undulations, plus a single climate, forming a large desert area.

There are five main reasons for the formation of the Sahara Desert: because it is located on both sides of the Tropic of Capricorn, Lana is controlled by the subtropical high pressure zone all year round, and the dry and hot downdraft prevails, and the northern part of the African continent is wide, and the range of the subtropical high pressure zone is large, and the area of solid dry heat is wide; North Africa is close to the Asian continent, and the northeast trade winds blow from the eastern land, which is not easy to form precipitation, making the north more dry. The coastline of North Africa is too straight, with the Ethiopian plateau on the east side, which prevents the moist air flow from entering the interior; The Canary cold current passes through the west coast of North Africa, which has a cooling and dehumidifying effect on the western coastal areas, bringing the desert closer to the west coast. The terrain of North Africa is relatively homogeneous, with flat terrain and small undulations, plus a single climate, forming a large desert area.

10,000 years ago, the Sahara, now the world's largest desert, was filled with weeds and scrubland. But then, the summer temperature rose and there was almost no rainfall. This climate change has wiped out many paleontologies and forced those that survived to migrate to other regions.

Another, less dramatic climate change in the Sahara occurred between 6,700 and 5,000 years ago, the researchers said.

According to these scientists at the Potsdam Meteorological Institute, desertification in the Sahara is one of the most dramatic climate changes in 10,000 years. This meteorological model suggests that human land use was not a significant factor in the formation of the Sahara Desert.