Details of Snow Disaster in South China in 2008

Since June 38, 2008+10/October 3, natural disasters such as low temperature, rain, snow and freezing have occurred in China. 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.

By February 24th, 654.38+029 people had died, 4 people were missing, 6,543.8+0.66 million people had been resettled, and the affected area of crops was 654.38+0.78 million mu, resulting in 87.64 million mu of disaster, 25.36 million mu of lost crops, 485,000 houses collapsed and 6,543.8+0.68 million houses damaged.

The damaged forest covers an area of nearly 279 million mu, and 30,000 national key protected wild animals were frozen to death or frostbite in the snowstorm. The affected population has exceeded 1 100 million. Seven provinces, including Anhui, Jiangxi, Hubei, Hunan, Guangxi, Sichuan and Guizhou, suffered the most.

Extended data:

The formation of the snowstorm:

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.

Since June 5438+ 10, the long-term meridional distribution of circulation has caused frequent cold air activities. At the same time, 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, forming heavy precipitation. The stability of atmospheric circulation made the rain and snow weather last, which eventually led to the occurrence of snowstorms.

Meteorologists said that the persistent low temperature in South China is closely related to La Nina phenomenon and abnormal atmospheric circulation. Experts pointed out that in the middle and high latitudes of Europe and Asia, a blocking high pressure appeared at high altitude and lasted for a long time, and the polar vortex remained motionless in Siberia, which led to the continuous invasion of China by cold air from the north.

At the same time of the cold air attack, the warm and humid air currents from the Indian Ocean and the western Pacific Ocean are continuously transported to South China, and the cold and warm air currents meet in the southwest, Jianghan, South China, Jiangnan, Jianghuai and other places, resulting in rare long-term and wide-ranging low-temperature rain, snow and freezing weather. However, experts stressed that the rare snow disaster in China was caused by many factors, and La Nina was not the only one.

Baidu Encyclopedia-Snow Disaster in China in 2008