What is the most frequent wind blowing in Jiangjin?

Southeast wind in summer and northwest wind in winter.

Climate characteristics Jiangjin belongs to the subtropical monsoon climate zone in the northern hemisphere. Influenced by the basin edge topography and monsoon, the climate is characterized by mild climate throughout the year, distinct seasons, abundant rainfall, abundant sunshine and long frost-free period. Except for the southern mountainous areas, the annual average temperature 18.4℃ is more than 2 degrees higher than that in the middle and lower reaches of the Yangtze River at the same latitude. In winter, under the control of westerly circulation, continental airflow is dominant. Because it is surrounded by mountains, cold air is not easy to enter, and frost and snow are scarce.

In late winter and early spring, affected by the cold wave, the climate is changeable, and low temperature and rainy weather often appear. This kind of weather is called "late spring cold", which is not good for rice planting. In summer, influenced by the Pacific subtropical weather system, ocean warm current prevails, sometimes combined with Tibetan high. At the same time, because the summer monsoon sinks over the Yunnan-Guizhou Plateau, it warms the Yangtze River basin, which is extremely hot, dry and rainy, with blue sky and white clouds, strong winds and low humidity. Spring and autumn are the advance and retreat seasons of continental airflow and ocean airflow, and the frequent activities of high and low air weather systems lead to unstable hot and cold in spring and rainy in autumn.

In most years, the extreme maximum temperature is stable between 39-40℃ and the extreme minimum temperature is around 0℃ ... The extreme maximum temperature appeared on August 26th 1972, reaching as high as 4 1.3℃, and the extreme minimum temperature appeared on February 26th 1975 and 18. The annual average rainfall is 1026.6mm, with uneven seasonal distribution. The rainfall in winter half year (165438+ 10 to April of the following year) accounts for 22%, and that in summer half year (5-65438+ 10) accounts for 78%, especially in June-August, which accounts for 56%. Rainy year. The interannual variation is also great. The youngest one appears in 1958, which is 663.8 mm, and the oldest one appears in 1965, which is 1267.2 mm, and the annual average air humidity is 8 1%. The annual water evaporation is less than the rainfall, so the climate is humid and suitable for people's life and plant growth. Affected by topography, the southern mountainous area has obvious vertical climate change. The higher the terrain, the lower the temperature, the more precipitation, and rain and snow in winter.

Jiangjin, in administrative division, is jiangjin district. The climate characteristics of Jiangjin City are similar to those of Chongqing, but the comprehensive meteorological indicators are better than those of Chongqing. Jiangjin area is high in the south and low in the north, and the lowest point of Luohuang 18 dam is178.5m above sea level. The highest point of the centipede dam in Simian Mountain is l 709.4 meters above sea level, and the average elevation of the main urban area is 209.7 meters. The 50-year flood level 199.

Jiangjin has a sub-high temperature and irregular monsoon climate with abundant sunshine, mild climate and abundant rainfall, which endows Jiangjin pepper with unique natural conditions for growth.

Adequate sunshine: the annual average solar radiation in the city is 36 1.9 kJ/cm2, with the highest in August and the lowest in 65438+February. The annual sunshine hours are 1, 207.9 hours, the longest is 1, 628.8 hours and the youngest is 95 1.7 hours. The highest is 2 1.7 hours in August and the lowest is 1.8 hours in February.

Mild climate: the annual average temperature in the city is 18.2℃, the highest year is 19. 1℃, and the lowest year is 17.7℃. In the rose season, the average temperature in April ~10 is higher than the annual average, while the average temperature in summer is higher and has little change, and some areas remain above 25℃. The average minimum temperature in winter in 65438+ 10 is 5.4℃, and the average temperature in spring and autumn is almost the same, slightly higher than the annual average.

Abundant rainfall: the annual average rainfall of the whole city is 1 034.7mm, the rainfall in May and June in summer and autumn is 802.8mm, accounting for 78% of the whole year, and the average rainfall in winter and spring is 62.2mm, accounting for 6% of the whole year. Judging from the changes of four seasons, summer accounts for 43% of the whole year, and winter accounts for 43% of the whole year. 1 month is the least, only 17.8 mm, and the average annual rainy days are 156 days, the most 180 days and the least 130 days.