When did the freezing rain in South China begin in 2008?

The freezing rain in South China in 2008 began on June 38, 2008+10/October 3.

China, Shanghai, Jiangsu, Zhejiang, Anhui, Jiangxi, Henan, Hubei, Hunan, Guangdong, Guangxi, Chongqing, Sichuan, Guizhou, Yunnan, Shaanxi, Gansu, Qinghai, Ningxia, Xinjiang and other 20 provinces (autonomous regions and municipalities) are all affected by low temperature rain, snow and freezing disasters to varying degrees.

Experts from the National Meteorological Department of China pointed out that the large-scale rain and snow process should be attributed to the abnormal atmospheric circulation related to La Ni? a (anti-El Ni? o) phenomenon: the long-term meridional distribution of circulation since June+10 in 5438 has made cold air activities frequent, while the subtropical high is strong, and the south branch trough is active. Warm and humid air from the south meets cold air from the north in the middle and lower reaches of the Yangtze River, resulting in heavy precipitation. The stability of atmospheric circulation made the rain and snow weather last, which eventually led to the occurrence of snowstorms.

Extended data

Regional characteristics of freezing rain:

Freezing rain is more common in mountainous areas and lake areas; There are many in the south and few in the north of China; There are many wet areas and few dry areas; There are more mountains than plains, and there are the most mountains. According to statistics, the freezing rain weather in the Jianghuai basin occurs once every 2-3 years along the Huaihe River and once every 7-8 years south of the Huaihe River. However, in mountainous areas, there is a big difference between valleys and mountain tops. There is almost no freezing rain in some valleys in mountainous areas, while there is freezing rain in higher mountainous areas almost every year.

Guizhou Province is the region with more freezing rain in China, followed by Hunan, Jiangxi, Hubei, Henan, Anhui and Jiangsu, as well as Shandong, Hebei, Shaanxi, Gansu and southern Liaoning. There will also be freezing rain in northern Xinjiang and Tianshan area, central Inner Mongolia and eastern Daxinganling. Guizhou is the province with the most freezing rain in China, and it is most prone to freezing rain from 65438+February to February of the following year. Weining, Guizhou is known as the "hometown of freezing rain", and the number of freezing rain days in Weining can reach 44.6 days. Among them,1October is the most, with an average of 16.8 days, and the whole year is 65438+ February/kloc-0.1day.

Baidu Encyclopedia-Snow Disaster in China in 2008