What is the phenomenon in the tropics?

Some tropical phenomena: direct sunlight.

The earth's surface is divided into five zones according to the amount of solar heat obtained, which are usually called tropical zone, temperate zone and cold zone. There is direct sunlight in the tropics; There are four different seasons in temperate zone; Cold is accompanied by extreme day and night phenomena.

The tropics are located between the Tropic of Cancer and the Tropic of Cancer, on both sides of the equator and between 23 26' south latitude, accounting for 39.8% of the global total area.

The English name of the Tropics is tropics. The sun is high in this area all year round. In the vast area between the Tropic of Cancer, there are direct sunlight twice a year. On the tropic of cancer, there is only direct sunlight once a year. Moreover, the height of the sun is very high at noon all the year round, with little change. Therefore, this area can get strong sunshine all year round, and the climate is hot, which is called the tropics.

On the equator, the length of day and night is equal throughout the year. From the equator to the Tropic of Cancer, the length of day and night changes gradually. On the regression line, the difference between the longest day and the shortest day is 2 hours and 50 minutes. It can be seen that in tropical areas, the latitude difference of astronomical phenomena is very small. Tropical areas are characterized by high temperature all year round, with a small range, only relatively hot seasons and cool seasons or rainy and dry seasons. The annual temperature is greater than 16 degrees Celsius.

Climate characteristics?

The most remarkable feature of tropical climate is the high annual temperature, with the annual average temperature greater than 16 degrees Celsius, the boundaries between the four seasons are not obvious, and the daily temperature change is greater than the annual temperature change. Due to the difference between surface and precipitation, tropical climate shows different characteristics, including relatively hot season and cool season or rainy season and dry season.

Broadly speaking, equatorial climate can also be classified as tropical climate. Equatorial climate refers to the climate within 5- 10 degrees on both sides of the equator. The annual average precipitation is 1000-3000 mm, and the precipitation distribution is relatively uniform. The annual average temperature is 25-28℃, the humidity is relatively high, and the meteorological elements change little every year. Near the equator, it is humid, hot and rainy all the year round.

During the day, the weather changes are often monotonous and full of regularity. In the early morning, the weather is clear and cool. Near noon, the cumulus clouds in the sky develop strongly and become thicker. At one or two o'clock in the afternoon, the sky is overcast, thunder rumbles, and the rain pours down, and the rain can last until dusk. It was a little cold after the rain, but it became sultry again after sunrise the next day.

?

1. The tropical rain forest climate is mainly distributed near the equator, and it is hot and rainy all year round or even every month.

2. The tropical grassland climate is mainly distributed in the north and south sides of the equatorial rainforest climate in Africa and South America. It is hot all year round, with obvious dry season and rainy season (precipitation is divided into dry season and wet season).

3. The tropical monsoon climate is most obvious in the Indian Peninsula and Indochina Peninsula in the south and southeast of Asia. This climate is hot all year round, and a year can also be divided into dry season and rainy season, and the wind direction changes with the seasons. In dry season, the wind blows from land to sea, and there is little rain; In the rainy season, the wind blows from the ocean to the land, and the precipitation is concentrated.

4. The tropical desert climate is mainly distributed in the west coast and inland areas of the mainland near the Tropic of Cancer. This climate is characterized by scarce precipitation, hot and dry all year round, and a large desert on the ground.