What's the climate like in Jiangxi?

Overview: Jiangxi is located in the subtropical monsoon climate zone, with four distinct seasons, abundant sunshine and rainfall.

Spring is cold and rainy, and occasionally peach blossoms flood; Summer is hot and rainy, occasionally affected by typhoons; Autumn is crisp, autumn is crisp; Winter is wet and cold, and the north wind is blowing.

The annual average temperature is11.6℃ ~19.6℃, and the frost-free period is 240-307 days. The seasonal distribution of precipitation is uneven, and more than 50% of the annual precipitation is concentrated in April-July, which is the rainy season in Jiangxi.

Jiangxi has a vast territory, spanning more than five latitudes from north to south and more than five longitudes from east to west. The territory is surrounded by mountains on three sides, with undulating mountains in the middle and Poyang Lake and its plain in the north.

The complex landform distribution makes the distribution of climate resources in Jiangxi complex and diverse: there are more light resources in the north and less in the south; There are more heat resources in the south and less in the north; There are less water resources in the east and west; There are many wind energy resources in lakes, mountains and mountains, but few in other areas.

The main characteristics of the four seasons and the distribution of climate resources in the province are as follows:

Spring: Affected by continental cold high pressure and south branch trough, the weather in our province is multi-process, and the main disastrous weather is low temperature, rainy weather and strong convective weather.

Long-term low temperature and rainy weather will cause rotten seeds and seedlings, which is very harmful to early rice sowing, with an average of about 2 years 1 time.

Summer: controlled by the western Pacific subtropical high, sunny, dry and hot.

Except for the surrounding areas, the average temperature in July in the whole province has little difference between north and south, ranging from 29.0℃ to 30.0℃, and the extreme maximum temperature is above 40℃.

The number of days with the highest daily temperature ≥35℃ in the whole year is more than 20 days, and Poyang Lake can be regarded as one of the "stoves" in China, except for the mountainous areas with good vegetation conditions such as lake regulation, Longnan, Quannan and Dingnan.

The extreme maximum temperature in the province for many years is 31.1℃ ~ 42.1℃.

Autumn: After the rainy season, the western Pacific subtropical high jumps northward, which is located between many Pacific subtropical high ridges in our province, making our province sunny and humid. The main disastrous weather is drought and cold dew wind.

Winter: Under the influence of continental monsoon, cold air keeps invading, especially Poyang Lake, a basin open to the north. The continuous entry of cold air makes the temperature in the northern plain drop obviously, sometimes accompanied by rain, snow or freezing.

5438+ 10 The average temperature in June is 3.5 ~ 5.0℃, and the lowest temperature is low.

Gannan basin is separated by mountains and located in the south, with little influence of cold air. During 5438+1October and June, the average temperature is 7.0 ~ 8.0℃, some of which are above 8.0℃, but the extreme minimum temperature can still be reduced to about -5℃.

The extreme minimum temperature in the whole province for many years is -3.8℃ ~- 16.7℃.

Distribution of optical resources:

The annual sunshine hours in most areas of our province are 1600 ~ 2 100 hours, and those in Xing Zi, Duchang, De 'an, Yongxiu, Jingdezhen and Shangrao exceed 1900 hours, of which Boyang 2 145 hours.

Yichun and Pingxiang have fewer hours, less than 1700 hours, of which the bronze drum is only 1560 hours.

There are also fewer sunshine hours in mountainous areas, such as only 152 1 hour in Chongyi.

Distribution of heat resources:

Jiangxi is rich in heat resources.

The annual average temperature in all parts of the province 16.4 ~ 19.8℃ rises from north to south, and the plain is higher than the mountainous area.

The annual average temperature in the northeastern Jiangxi, the marginal mountainous areas of northwestern Jiangxi and the south bank of the Yangtze River is relatively low, which is 16.4 ~ 17.0℃. The annual average temperature in Gannan basin is relatively high, ranging from 19.0 ~ 19.8℃. Most other areas are 17.0 ~ 19.0℃.

In recent years, the winter temperature in our province and the lowest temperature in Leng Yue have gradually increased by 0.05 ~ 0. 10℃ every10 year. The summer temperature and the highest temperature in the hottest month gradually decrease by about 0.0 1 ~ 0. 17℃ every 10 year. The average temperature in spring and year around the country has risen and fallen, with a small range; The temperature drops slightly in autumn.