In China, which suffered the most in 2007, the gods helped.

In the winter of 2007, the abnormal weather in China mainly refers to the continuous snowstorm weather in the south of China, and the corresponding snowfall in the north is less, and the overall temperature is extremely cold. 2. Blizzard scope: Zhejiang, Jiangsu, Anhui, Jiangxi, Henan, Hubei, Hunan, Guangdong, Guangxi, Chongqing, Sichuan, Guizhou, Yunnan, Shaanxi, Gansu, Qinghai, Ningxia and Xinjiang. Among them, the daily duration of rain and snow in Henan, Shaanxi, Gansu, Qinghai and other places exceeds 100 year, and that in Guizhou, Jiangsu, Shandong and other places reaches 50 years. 3. Features: (1) The snowfall is much more than in previous years. (2) The snowfall range is wider than in previous years. (3) The duration of continuous snowfall is longer than in previous years. (4) The main areas affected by snowfall are south than in previous years. (5) The disaster caused by snowfall is more serious than in previous years. 4. Disaster: The snowstorm in China in 2008 was 65438+65438+2008 10. 19 Henan, Hubei, Hunan, Guangdong, Guangxi, Chongqing, Sichuan, Guizhou, Yunnan, Shaanxi, Gansu, Qinghai, Ningxia, Xinjiang and Xinjiang Production and Construction Corps were all affected by low temperature rain, snow and freezing disasters, and 60 people died. Two people were missing, and 6.5438+0.759 million people were urgently transferred and resettled; The affected area of crops is 7270.8 thousand hectares; 223,000 houses collapsed and 862,000 houses were damaged; The direct economic loss was 53.79 billion yuan. Among them, Hunan, Hubei, Guizhou, Guangxi, Jiangxi, Anhui and other six provinces and regions were the most seriously affected. 5. Reason: There are two main reasons for this snowfall, which are explained by the macro change of global climate and the specific weather process of this snowfall in the south. The first reason (macro reason) is that we are in a La Nina state this year, that is, the SST in the equatorial eastern Pacific is below minus 0.5 degrees lower than normal, which has a very obvious impact on China's climate. Under the influence of La Nina phenomenon, the meridional circulation in East Asia is abnormal, which is very beneficial to the southward movement of cold air in northern China. It has given us a cold winter, so we can see that this cold winter has already appeared this year. The second reason (specific reason) is that the two conditions that must be met when it snows or rains are 1. It comes from the warm and humid air flow in the tropics. There is cold air from high mountain area. The snowfall area in winter (the same as the rainfall area in summer) is distributed near the front, that is, the intersection of cold and warm air masses. This position is not fixed, but is determined by the strength of the two air masses. The cold air mass is weak, the front and precipitation areas have high latitudes, the cold air mass is strong, and the front and precipitation areas have low latitudes. The land cold high that affects China in winter is the Asian high centered on Mongolia and Siberia (also known as the Mongolian Siberian high), which has a very large sphere of influence and has a great impact on the weather in China, especially in the northern region. The cold air affecting our country in the early winter of this year is relatively weak, and the frequency is not much. Even with warm and humid airflow, it is not easy to snow without cold air. However, since 2008, the high pressure in Asia has been very active, and cold air masses have formed southward, affecting China and causing large-scale gale and cooling weather. However, due to the active warm air mass in the south this year, a large number of warm and humid air currents from the Pacific Ocean and the Indian Ocean frequently patronize the southern region. When the powerful cold air mass from Mongolia and Siberia quickly moved south to meet the warm and humid air mass, the cold and warm air just merged into one. Affected by these two air currents, there have been more rainy and snowy weather recently, especially in the Yangtze River basin, and the low temperature weather has lasted for a long time. If there is only a strong cold air mass without a large amount of water vapor provided by warm and humid air mass, there will only be strong winds and cool weather in the south; If there is only a large amount of water vapor provided by warm and humid air masses, there will be no disastrous weather at all without the arrival of cold air masses. When both are ready, disaster comes. 6. Environmental and social problems (1) The impact of the power system, the continuous heavy snow and freezing rain broke cables and iron towers, and the electricity consumption increased sharply in cold weather, resulting in large-scale power outages in some areas. (2) The traffic problems of coal transportation, such as roads, railways, aviation and ports such as Daqin Railway and Beijing-Hangzhou Canal, have increased the pressure of coal transportation. (3) Coal production and supply, the coal supply in the southern region is tight, and the task of transporting coal from north to south is imminent. (4) Affecting citizens' travel plans, many people who originally planned to travel during the winter vacation and Golden Week were forced to cancel their travel plans. (5) Traffic problems: the southern section of Beijing-Guangzhou line and some sections of Shanghai-Kunming line were stopped, the train was delayed many times, tens of thousands of passengers were stranded in Guangzhou station, and some sections of Beijing-Zhuhai Expressway were closed. . . (6) Some migrant workers can't go home for the New Year, some migrant workers can't buy tickets, or because of traffic reasons, even if they have tickets in time, they can't go home for the New Year. (7) The influence of communication, continuous heavy snow and freezing rain damaged several signal communication towers of China Mobile, resulting in no cell phone signal in some areas for some time. (8) Supply of agricultural products: Affected by snowfall, some agricultural products in the south were frozen, or could not be transported to the north in time due to traffic reasons, resulting in food shortages or rising prices in many areas in the north and disaster-stricken areas in the south. (9) For people's life and health, several staff members and policemen died in the snowstorm for several days. 7. Party and state leaders, relevant departments and enterprises attach great importance to this snowstorm and take active and effective measures to deal with the disasters caused by it. First, we must attach great importance to it and respond positively. Seriously analyze the situation of enterprises dealing with the severe cooling rain and snow weather, and take effective measures to effectively improve their ability to resist emergencies and natural disasters; The second is to strengthen management to ensure production safety. Actively resolve various factors that are not conducive to safe production. Thermal power plants should especially do a good job in the storage of electric coal and fuel oil and the guarantee of transportation power. Further strengthen the coordination between power plants and networks, strictly regulate discipline, and rationally arrange operation modes to ensure the safe and reliable operation of power grids; Third, we should strengthen leadership and take effective measures to repair the affected power facilities as soon as possible. Organize emergency repair reasonably, strengthen safety supervision, control all kinds of unsafe factors, and implement responsibilities in the whole process and in all links; The fourth is to implement the responsibility to ensure the smooth submission of safety information. It is necessary to take the initiative to report to the local people's government, carry out various disaster prevention and relief work in a safe and orderly manner, and at the same time clarify responsibilities, implement responsibilities, and submit safety information in a timely manner.