Reasons for the small temperature difference between north and south in summer in China

The reason why the temperature difference between north and south is small in summer in China is the influence of rain, geographical location and water evaporation.

1. Rainfall impact: South China has a subtropical monsoon climate, which is hot and rainy in summer and mild and rainy in winter. In summer, affected by the southeast monsoon of the Pacific Ocean, warm and humid air flows landed from the southeast coast, bringing abundant rain, which made the temperature in the south relatively high.

2. Geographical location: The geographical location of China also affects the temperature difference between north and south. China is located in the northern hemisphere, and the sun shines directly in the northern hemisphere in summer, which makes the northern region receive more solar radiation and the temperature is higher. Although the southern region is close to the equator, due to the adjustment of the ocean, the temperature is relatively stable and there will be no extreme high temperature weather.

3. Evaporation of water: The evaporation of water in the southern region also plays a role in regulating the temperature. The southern region has a vast water area and a humid climate. Water evaporation can absorb some heat, so that the temperature will not be too high. The evaporation of water will also release a certain amount of water, forming clouds and precipitation, and further adjusting the temperature.

Influence of geographical location on temperature difference between north and south in summer;

Latitude factor: In summer, the sun shines directly into the northern hemisphere, which makes the northern region receive more solar radiation energy, so the temperature in the north is higher. The southern region is close to the equator, receiving relatively little solar radiation and the temperature is relatively low.

2. Land and sea distribution: China is located in the east of Asia, and it is influenced by the Asian low (Indian low) in summer. The low pressure system forms a low pressure over the ocean, and the airflow blows from the ocean to the land, which makes the southern region greatly influenced by the ocean and the temperature is relatively stable. However, the northern region is far away from the ocean, less affected by the ocean, and the temperature changes obviously.

3. Topographic vegetation: There are many mountains and hills in the south, and the surface albedo is low, which can absorb more solar radiation, thus playing a certain role in cooling down. The southern region is rich in vegetation, which can also absorb and reflect solar radiation and further adjust the temperature. The northern region is mostly plain and grassland, with high surface albedo and vulnerable to solar radiation and high temperature.