Why is Cairo called the ancient city of the desert? Introduction to the Sahara Desert

Cairo is located near the top of the Nile Delta, the world's longest river. It is surrounded by the Sahara Desert on the east, south and west. It has a hot and dry climate and is the largest desert city in the world. Why is Cairo called the ancient desert city? Here is the relevant knowledge I will share with you today.

Contents of this article

1. Why is Cairo called the ancient desert city?

2. Introduction to the Sahara Desert

3. What is the average temperature in the Sahara Desert?

Why is Cairo called the ancient desert city?

Cairo, the largest city in Africa, is the capital of the Arab Republic of Egypt and a famous tourist city.

Cairo is located near the top of the Nile Delta, the longest river in the world. It is surrounded by the Sahara Desert on the east, south and west. It has a hot and dry climate and is the largest desert city in the world. In 969 AD, before the American continent was discovered, Cairo was already the capital of the Fatimid Dynasty of the Arab Empire. "Cairo" means "victory" in Arabic. In the 13th century, the city expanded further and became a trade and cultural center far and wide.

Introduction to the Sahara Desert

The Sahara Desert was formed about 2.5 million years ago. It is the second largest desert in the world after Antarctica and the largest sandy desert in the world. It is located in northern Africa. The climate conditions in the region are very harsh and it is one of the least suitable places for biological survival on the earth. "Sahara" is a transliteration of Arabic. In Arabic, "Sahara" means a large desert. It comes from the language of the local nomadic Tuareg people and originally means "large desert". Humans have lived on the edge of the Sahara Desert since 500,000 years ago. Today, there are still about 2.5 million people living in the Sahara, mainly distributed in Mauritania, Morocco and Algeria. There are Berbers, Tuaregs, Sahawis and Moors who belong to the Arabic language family, as well as some black races, such as the Toub, Nubians, Sahawis and Kanuris. The largest city in the Sahara is Nouakchott, the capital of Mauritania. Other important cities include Tamanrasset in Algeria, Timbuktu in Mali, Agadez in Niger, Ghat in Libya and Faya in Chad.

What is the average temperature in the Sahara Desert?

The annual range of the average daily temperature is about 20 degrees. The average winter temperature is 13 degrees. Summers are extremely hot. The highest temperature ever recorded was 58 degrees in Aziziyah, Libya. Annual precipitation is 76 mm, although rainfall varies greatly, with most precipitation occurring between December and March. Another peak in precipitation is in August, characterized by thunderstorms.

The Sahara Desert climate is controlled by the north-south transition of the trade wind belt and often has many extremes. It has the highest evaporation rate in the world and has the largest area recorded to have no rainfall for several consecutive years. Temperatures can reach frost and freezing at high altitudes, while low altitudes can have the hottest weather in the world.

The Sahara Desert is dominated by two climate regimes: arid subtropical climate in the north and arid tropical climate in the south. The arid subtropical climate is characterized by large annual and daily temperature variations, cold to cool winters and hot summers with the highest precipitation.