What is the reason for the climate in Lingnan, my country?

This is mainly due to the geographical latitude and terrain conditions. In terms of latitude, we can see from the map that the Tropic of Cancer passes through the middle of the three provinces of Taiwan, Guangdong and Guangxi. If divided according to geographical latitude, south of this line is the tropical range, and this line ends with The north is subtropical. If we use the 10°C isotherm in January to divide it, this isotherm roughly passes from the north of Fuzhou to the southwest through Shaoguan in Guangdong and Liuzhou and Baise in Guangxi. To the south of the line is the area without winter all year round. Therefore, in terms of geographical latitude, my country's Lingnan area is located between the tropics and subtropics, and most places are areas without winter.

In terms of terrain conditions, the Nanling Mountains start from Wuling in the north of Guangxi and Guangdong provinces in the west, and extend to the Wuyi Mountains on the western border of Fujian in the east. Its height is generally about 1,000 to 1,500 meters above sea level. , it has a barrier effect on the cold airflow from the north to the south in winter. Although sometimes strong cold waves from the north can reach Lingnan, the average daily temperature in January in Guangzhou and Nanning can drop below 4℃, but the number of such times is one There aren't many in the middle of the year. Furthermore, the terrain here is high in the north and low in the south (in Fujian, it is high in the west and low in the east), which is conducive to receiving warm and moist airflow blowing from the ocean, making the climate here even warmer and humid. Therefore, the terrain conditions also contribute to the warm and hot climate here. One of the main reasons.

Due to the influence of the above two factors, Lingnan has become the warmest region in the country. In fact, the climate here is not divided into four seasons, but three seasons: the cool season, November to February, when the northeast monsoon prevails, and the climate is the coolest; the warm season, March to June, when Warm and moist airflow from the sea begins to enter, the temperature increases, and there is more precipitation; in the summer season, from June to October, typhoons often hit, the weather is the hottest, and the precipitation is the most. During this period, the daily temperature changes are also the largest. Within a day, the temperature The temperature can rise and fall up to 6~8℃. Therefore, "As soon as it rains, autumn becomes autumn" is indeed a statement that is in line with objective reality.

Because the Lingnan area of ??my country has high temperatures and rainy weather throughout the year, this provides conditions for the growth of tropical crops. Guizhou has “no sunny days”

Guizhou Province is one of the areas with the most humid climate in the country, and is also one of the areas with the most cloudy days in the country. The number of cloudy days in a year is more than 200, like in the north. In Zunyi, there are 9 cloudy days a year. In other words, on average, 3 out of 4 days are cloudy; Guiyang in central China has an average of 238 cloudy days every year, with as many as 23 cloudy days in January. September has the least cloudy days, with 14 days. In most areas of Guizhou, there are more than 150 rainy days in a year. Guiyang has an average of 188 rainy days every year, which means that it rains on more than half of the days in a year. There are an average of 20 rainy days in May, and the least in December, but still with 13 days. From January 7 to February 3, 1944, it rained continuously for 28 days. Therefore, it is not an exaggeration to say that Guizhou Province has “no sunny days”.