Cold winter? The maximum amount of cooling and rain and snow will begin next week!

the next ten days in the middle and lower reaches of the Yangtze River rainy and weak air will affect China's
jKU(November 17-26), the middle and lower reaches of the Yangtze River rainy weather, eastern Guizhou, Chongqing, Jianghuai, Jiangnan, South China accumulated precipitation of 15 to 40 mm, some areas have 50 to 80 mm, In addition, the cumulative precipitation in the Ili Valley of Xinjiang, the eastern part of northwest China, north China, Huanghuai and the northeast region has 5 to 15 mm, and the south-east of northwest China and Huanghuai Bureau can reach 20 to 40 mm;
jKU .Before the 20th, cold air activity range north, except in northern Xinjiang, northeast Inner Mongolia, north-central northeast of the temperature is low 2 to 3 degrees Celsius, the average temperature in most of the rest of the country is higher than the same period of the year 2 to 4 degrees C;
jKU .Main weather process:
jKU17-20, cold air will affect the northern region, northern Xinjiang, north-west china, north-east China, northeast China, Huanghuai and other places will drop 4 to 8 degrees Celsius, including inner Mongolia in the east and northeast region of the southern bureau cooling range of more than 10 degrees Celsius. The above areas are accompanied by a northerly wind of 4 to 6 degrees. There will be light rain in the eastern part of northwest China, North China, Huanghuai, Jianghuai and other places, including moderate rain in parts of Huanghuai East and Jianghuai, and small to medium snow in Inner Mongolia and most of the Northeast, with heavy to heavy snow.
jKU .20-24, affected by strong cold air, the central and eastern regions will be large-scale rain and snow and wind cooling weather process; the middle and lower reaches of the Yangtze River and its northern regions will have 4 to 6 degrees northerly wind; the temperature in the central and eastern regions will drop 6 to 10 degrees Celsius, the local cooling range of more than 12 degrees Celsius;
jKU .Extra cold this winter? Experts predict that this winter in China or for the "cold winter"
jKUthe source of weather changes, often in the distance. Meteorologists judge that this winter may be cold in our country, rooted in changes in ice melt as far away as the Arctic and the "La Nina event" in the equatorial Middle East Pacific.
jKU .1 Experts predict that this winter in China or for the cold winter
jKU"Arctic sea ice is an important part of the climate system, through albedo feedback mechanism to influence the changeof atmospheric circulation." The melting of Arctic sea ice is affecting climate change in China, said Yu Cuijuan, head of the Climate Prediction Group of the Marine Climate Prediction Office of the National Marine Environment Prediction Center. Based on the current Arctic ice melting situation, the country is expected to have a cold winter in 2016/2017.
jKU .After the rapid melting of Arctic sea ice, the albedo decreases and more energy is stored in the ocean, accelerating ice melting on the one hand, and on the other hand, energy will be transferred more from the ocean to the atmosphere, changing the air pressure between the Arctic and mid-latitudes, and bringing cold air from the Arctic to the mid-latitudes, he said. The effect of this rapid melting of Arctic sea ice on temperature is the so-called "warm Arctic-cold continent".
jKU .　　Lei Ruibo, an expert on sea ice at the China Polar Research Center for many years, said the decrease in Arctic sea ice is closely related to China's winter temperature and precipitation. The main reason for the decrease of Arctic sea ice is global warming, which leads to the increase of extreme cold temperature slate in winter and the appearance of cold winter.
jKU .　　On the other hand, sea temperatures in the equatorial Middle East and Pacific region entered La Nina in August, "taking the baton" before the super El Nino event. Monitoring shows that La Nina is expected to continue into winter, which has a greater impact on china's winter temperatures.
jKU .　　La Nina is an abnormally cold ocean surface temperature in the equatorial Middle East And Pacific Ocean, to some extent, la Ni?a can be called anti-El Ni?o phenomenon, sea temperature anomalies caused by atmospheric circulation anomalies, affecting the global climate. Currently, the entire equatorial Middle Eastern Pacific is in La Nina, and a weak to moderate-intensity La Nina event is expected in December. In the event of La Nina or La Nina events, our country is prone to cold conditions in winter.
jKU .　　Zhou Bing, a senior engineer and chief expert at the National Climate Center's Climate Monitoring Office, said that for China, La Nina has a significant impact on the south, especially in the middle and lower reaches of the Yangtze River. In comparison, the degree of coldince in the north of China is more obvious.
jKU .　　Globally, "in the 14 La Nina events in history, the probability of a cold winter after La Nina is more than 70 percent, and there is basically a relatively cold winter." Zhou Bing said.
jKU .　　Ding Yanhui, a member of the Chinese Academy of Engineering, said colder than usual would probably be the main theme for this winter, and that the latter winter could be colder than the previous winter. Zheng Fei, a researcher at the Institute of Atmospheric Physics of the Chinese Academy of Sciences, believes that, in general, the "La Nina Year" is relatively obvious in the winter cold air activity in northern China.
jKU .　　2 Changes in arctic sea ice melt or cold winter
jKU Arctic sea ice in China, reflected in changes in sea ice extent, sea ice thickness and ice age. Monitoring shows that Arctic sea ice thickness is being drastically reduced, and spring ice is younger and thinning.
jKU .　　Li Chunhua, a researcher at the Polar Environment Research and Forecast Inglis at the National Marine Environment Prediction Center, said the minimum range of Arctic sea ice in the summer of 2012 reached the lowest level on record since satellite observations began, and the minimum range of Arctic sea ice in the summer of 2016 was the second lowest on record.
jKU .　　Experts believe that changes in ice melt in key Arctic sea areas may lead to a cold winter in China. At the same time, the Arctic sea ice melts more, and it does not necessarily bring cold winters to our country.
jKU .　　Diagnostic analyses and model results show that the Kerala sea and Barents Sea regions of the Arctic Ocean are key sea areas, and if the region melts more ice in autumn and winter, winter temperatures in the mid-latitudes of Eurasia or East Asia will be lower than usual, he said. According to the current situation of basically no growth of sea ice in the Kara and Barents Seas in October, the extent of sea ice in this area is expected to be significantly lower in autumn and winter this year, so it is expected that the 2016/2017 winter may be cold in China.
jKU .　　"However, it is not the melting of Arctic sea ice that brings a cold winter to Eurasia, which is mainly related to the melting region of the sea ice." The numerical tests have shown that the most significant ice melting regions are the Barents-Kerala Sea in the Atlantic Ocean, which, if the Chukchi Sea and The Puffer sea in the Pacific Ocean melt, will have a weak cooling effect and affect the latitudes to be further southerly, he said.
jKU .　　Regarding the link between Arctic ice melting and mid-latitude cooling, mr. Tsui said that if the sea ice in both regions melts particularly much, the cooling effect is not significant. This partly explains that although Arctic sea ice has been less widespread than before in recent years, it is not every year that is cold.
jKU .　　3 Cold winter in the context of La Nina event swashem
jKU from the arctic key area ice melt situation, forecast this winter in China or cold winter. And la Nina events from the south also show that this winter is cold winter for the high probability event.
jKU .　　Wang Yongguang, chief expert of the National Climate Center, said that under the influence of La Nina, the probability of cold winter temperaturein in China is about 70%, and cold air activity is more.
jKU .　　When La Nina occurs, it is easy to see the abnormal atmospheric cyclone circulation and northwind anomalies in the western Pacific, the east Asian trough strengthens, the subtropical high pressure in the western Pacific weakens, the east Asian mid-latitude longitude circulation is obvious, the winter wind is strong, china's offshore is prone to cold air waves and low-temperature sea water frost damage.
jKU .　　Meteorologists warned that cold weather will increase energy consumption such as coal-electric oil and gas, transportation and animal husbandry in the north will also be affected, should be prepared to deal with.
jKU .　　How to deal with freezing rain and snow in agriculture to ensure the safe winter ingenuity of winter wheat
jKU strengthen the investigation of winter wheat seedling, moisture, disease and grass situation, for different types of seedling situation, guide farmers classification management, scientific control of fertilizer water, promote the transformation and upgrading of seedling situation. Further refine, practical drought and anti-freeze technology program, pay close attention to the weather and soil moisture changes, timely organization of farmers to clear ditches, to ensure the smooth flow of ditches, improve drainage and drought-resistant and cold resistance. Strengthen the monitoring and forecasting of pests and diseases such as wheat strip rust and the supervision of pesticide market, adhere to the strategy of "discovering a little, controlling one piece", minimize the winter base, and reduce the pressure of spring prevention and control. In the dryland wheat line per acre cast 300-400 kg wheat, crushed straw or other plant waste, both to protect and anti-freeze, and after the decay of the mulch can also improve the soil, fertility, wheat anti-freeze, increase disjointed effective measures. For dry land wheat, along the wheat box ditch cast a layer of manure fertilizer, also known as "warm ditch manure", can avoid wind protection, increase temperature and anti-freeze, and for the wheat seedlings back to green growth to supplement nutrients. The thickness of the lid dung is 3-4 cm.
jKU .　　Canola: heavy in anti-freeze decontamination
jKU to anti-freeze decontamination as the focus of the current southern rape field management, to take silting, drainage, dehumidification and chemical control, etc., to mitigate the impact of frost damage. Timely follow-up fertilizer, promote the transformation of seedlings. Take effective measures such as covering, loose soil, etc., to keep warm and prevent from freezing. For the signs of early moss, early flower phenomenon of the plot, deep ploughing, damage part of the root system, can delay the occurrence of early moss, early flowers, early moss, early flower rape, can choose sunny days after the Spring Festival, and the temperature is higher when moss, and timely recovery of quick-acting nitrogen fertilizer, promote the plant to restore vitality, reduce the loss of frost damage.
jKU .　　Dewy vegetables: to clear ditch drainage
jKU management focus is to prevent frost heating, dredging the box ditch, side ditch, waist ditch to eliminate water, enhance the air permeability of the van surface, improve the temperature, conditional areas can be taken to cover cultivation. Strengthen the large and small shed vegetable cover insulation management. You can take a small arch in a large shed, cover the film at night, or cover the film with a grass curtain, keep warm and dehumidify. The bottom of the shed is made of plastic film as an apron to reduce the cold air attack at the bottom, to plug the gap and minimize the heat dissipation of the gap, and to build a wind barrier with crop straw to the north of the shed to protect against the wind and cold.
jKU .　　Citrus: To protect the tree body temperature
jKU is the canopy cover. The use of straw, agricultural film, etc. covering the plant, to protect the temperature of the tree, the second is the soil 10-15 cm thick cover the root, the young tree can be built a triangular bracket, which covers straw, and the third is smoking and warming. 4 to 6 piles per acre; Before the arrival of low temperature, in the citrus tree canopy spray anti-steaming insulation agent, reduce the loss of heat in the tree body;
jKU .　　Livestock: both to keep warm, but also to ventilate
jKU is to close the doors and windows, to prevent cold air during the livestock and poultry house temperature dropped significantly. However, we should also pay attention to the timely ventilation and ventilation in the livestock and poultry house, keep the air fresh in the livestock and poultry house, and prevent the occurrence of disease. Second, the use of heating facilities such as large tile bulbs, etc. , increase the temperature inside the house, to ensure that livestock and poultry have a suitable environment for activity. Third, the stocked livestock and poultry such as sheep, cattle, chickens, etc. should be rushed back in time to avoid freezing death. Fourth, in the livestock and poultry house supplemented with grass, to prevent livestock and poultry from being frozen and cooled. Fifth, farmers try to prepare sufficient feed and forage, to prevent heavy snow may cause feed forage supply and transportation difficulties.
jKU .　　Fisheries: Focus on anti-crushing work
jKU local fisheries administrative departments should do a good job in accordance with the situation, timely to aquaculture enterprises, farmers issued early warning information, do a good job of anti-freeze and anti-collapse work. Further strengthen supervision, urge to do a good job in the maintenance of breeding insulation facilities, greenhouses, etc. , to prevent the adverse effects of cooling, blizzards, high winds, fog. Timely guide farmers to remove snow from breeding facilities and ensure the safety of farmed fish and aquaculture facilities.
jKU .　　Comprehensive source: Central Meteorological Station, Xinhuanet, People's Network
jKU
the next 10 days in the middle and lower reaches of the Yangtze River rainy and weak cold air will affect China's
jKU is expected (November 17-26), the middle and lower reaches of the Yangtze River region rainy weather, Guizhou East, Chongqing, Jianghuai, Jiangnan, South China accumulated precipitation of 15 to 40 mm, some areas have 50 mm 80 mm, South China Bureau can reach more than 100 mm, in addition, Xinjiang Yili Valley, northwest china, north China, Huanghuai, northeast china, most of the cumulative precipitation has 5 to 15 mm, the south-east of northwest China, Huanghuai Bureau can reach 20 to 40 mm;
j.