The temperature in Northeast China is low, and the adverse effects of wind and cooling on agricultural production are prevented.

Figure National Precipitation Forecast Chart (December 6-12, 2010)

The Central Meteorological Observatory predicts that this week, the cold air affecting China will have a strong influence, and the scope of influence will be wide. Most areas will have a large change in temperature and humidity. The average temperature in the northern and northeastern regions of North China will be about 1 °C lower than normal. It is 2~3°C lower; the temperature in most of the rest of China is basically the same as the normal year.

This week, there will be 1 to 5 millimeters of snowfall in northern Xinjiang, eastern North China, and northeastern China, with precipitation in some parts of the northeastern region being 10 to 15 millimeters; in the eastern part of southwestern China, southern Jianghuai, southern Jiangnan, and southern China, there are 10 to 30 millimeters of rainfall ( Snow), the precipitation in some areas is 40 to 60 mm (figure), the main precipitation period is from 11 to 12 days; the precipitation in most of the above areas will be 2 to 40% more than normal, including the southwestern region, Jiangnan, etc. Some parts of the land are 1 to 3 times more.

Main weather process this week

From 6th to 7th, the strong cold air that affects China will continue to affect China. Most areas will have strong winds and cool weather. Some areas in the southern Xinjiang Basin and western Inner Mongolia have dust; the temperature in most areas will drop by 6~ At 10 °C, the temperature drop in some areas of the southern part of North China, the northeastern part of Huanghuai, and the southeastern part of Northeast China can reach 12-16 °C; the middle and lower reaches of the Yangtze River and most of the north of the Yangtze River have 5~7 northerly winds; There are 6 to 7 grades in the eastern and southern sea areas and 8 to 9 winds in the gusts.

From the 10th to the 12th, a new cold air will affect China from west to east. The temperature in most parts of the central and eastern regions will drop by 4-8 °C, and the temperature drop in the northeast and northeastern regions of North China can reach above 10 °C. There will be a small to moderate rain process in the eastern part of the Yangtze River, Jianghuai, Jiangnan and southern China, with heavy rain in parts of the southwestern part of the southeast and Jiangnan.

Major weather disaster last week

Since December 2, snowfall and cooling weather has occurred in northern Xinjiang, and road transportation, civil aviation passenger transportation, and urban power supply and water supply heating in parts of Tacheng and Altay have been greatly affected. On December 3, from 06:00 to 19:00, the city appeared in the city. Water stop, power outage.

Affected by heavy fog, there were large delays in flights from Shanghai, Nanjing, Hangzhou, Qingdao, Shijiazhuang, Tianjin, Beijing and other airports from November 30 to December 2. At least 500 in and out of Shanghai Pudong and Hongqiao Airport on December 1 Due to delays in Hong Kong flights, there are more than 260 flights in and out of Beijing Capital Airport, and more than 100 ships in Shanghai have been affected.

Concerns and suggestions

In December, the cold air activity increased, and the national temperature generally declined. Relevant localities and departments need to strengthen the prevention of adverse effects of strong winds, severe cooling and rain and snow on agriculture, animal husbandry, transportation and people's lives.

The first is to prevent the adverse effects of windy weather on agricultural production. In the northern winter wheat area, it is necessary to timely check the grievances and seedlings, and adopt measures such as fertilization and cover to increase the temperature and protect the mites. In areas where winter irrigation is not carried out, it is necessary to timely water the wintering water to prepare for wintering in the winter wheat area; Reinforcement and cold protection; all measures in the south should be taken to prevent crops from being frozen.

The second is to prevent the impact of heavy winds and snowfall on animal husbandry and transportation. In the northern pastoral areas and plateau pastoral areas, it is necessary to do the cold and warmth of the livestock and the warm shelter and windproof work. The animal husbandry transition should pay attention to selecting the appropriate time and route to prevent white disasters and wind disasters; at the same time, relevant departments need to do roads, airports, railways, etc. De-icing and de-icing work; in addition, it is necessary to prevent the danger of strong winds on land and waterway traffic.

Third, North China, Huanghuai and other places need to pay attention to doing a good job in drought relief. In the next ten days, there will be no precipitation in the meteorological arid areas such as North China and Huanghuai. The southern Shandong, northern Anhui and northern Jiangsu areas should be timely irrigated, timely raked, ventilated and protected, promote the root growth of wintering crops, and strive to form strong seedlings before winter.

Fourth, do a good job of monitoring the Inner Mongolia section of the Yellow River and the Ningxia section to prevent the flood. At present, there is a flood in the Inner Mongolia section of the Yellow River, and it will gradually enter the river closure period. The strong cooling weather will easily increase the density of the æ·Œling and the formation of disasters in the ice-cold river. It is necessary to strengthen the monitoring work.