China New Network Client January 22nd, Zhang Qiang, deputy director of the National Climate Center said today that in 2018, China's temperature is high, precipitation is high, typhoon and low temperature freezing damage are heavy, storms, floods, droughts, strong convection, sandstorms, etc. The disaster is light. The overall climate year is normal. The number of high temperature days is high, and the high temperature extremes in the northeast and central and eastern regions are extreme. From the historical high temperature changes, the number of high temperature days in 2017 is second only to the high temperature in 2017. The main high temperature occurs in the south and the Yangtze River to southern China.
Data map: Hubei Wufeng Tujia Autonomous County, the traffic police on the road to shovel ice and snow to ensure smooth. Photo by Yan Zezhou
The China Meteorological Administration today held a press conference to interpret the 2018 China Climate Bulletin, the 2018 National Ecological Meteorological Bulletin, and the 2017 China Greenhouse Gas Bulletin.
At the meeting, Zhang Qiang introduced the "2018 China Climate Bulletin" and said that in 2018, China's temperature is high and precipitation is high. The loss of typhoon and low-temperature freezing damage is heavy, and meteorological disasters such as heavy rain, drought, strong convection and sandstorm are light. Compared with the past five years, the area affected by crops, the number of people missing from death and direct economic losses are significantly less. The overall climate year is normal. In 2018, the national average temperature (10.1 °C) was 0.5 °C higher than normal; the temperature in spring and summer reached a record high, and some reached 1 degree or even 2 degrees. Autumn and winter temperatures are close to normal. In terms of seasonal conversion, the temperature is high in spring and summer. The national average precipitation is more than 673.8 mm, which is 7% more than normal; the summer and autumn precipitation are 10% and 6% respectively, and the winter is 17% less. The spring is close to the same period of the year. The annual precipitation in the six major regions is mostly above or close to normal; in the seven major basins, except for the Liaohe River, which is 11% less, the rest are more or nearly normal. In particular, there are many Songhua River and Yellow River basins.
Zhang Qiang said that in 2018, the start time of the southern part of South China was significantly later than normal, ending early and the rainfall was less; the beginning and ending of the southwest rainy season were close to normal years, and the rainfall was more; the rain fell into the Mei night, the plum blossoms early, and the Meiyu rainfall was less 40. %about. The beginning and end of the rainy season in North China are both early and the rainfall is too high; the beginning and end of the autumn rain in Huaxi are late and the rainfall is relatively small; the beginning and ending of the northeast rainy season are close to normal and the rainfall is less. In 2018, more typhoons were generated and landed, the landing position was northerly, and the north and north of Shanghai were particularly affected, and the damage was heavy. The three typhoons "Anbi", "Lark" and "Wambia" successively landed in Shanghai within one month. The "Wambia" disaster was the heaviest this year. Low-temperature freezing damage and snow disasters occur frequently, and the loss has been biased for nearly 8 years. It can be seen from this figure that after 2011, the low-temperature freezing disaster is lighter and this year is aggravated. From the point of view of cooling, the cold wave in the middle of January caused heavy snowstorms in the central and eastern regions, and the temperature in the Yangtze River basin was relatively large. In the first half of April, there were staged spring colds in the northwest and north China. At the end of December, there was the largest range of low-temperature rain, snow and ice weather since the winter, and more than 140 stations experienced freezing disasters. Low temperature freezing damage and snow damage are biased.
Zhang Qiang said that in the case of heavy rain, the entire torrential rain disaster occurred relatively lightly. The summer rainstorm process was frequent, and there were many rainy days in autumn. Although more than 20 heavy rains occurred, no flooding occurred in the basin. There are frequent rainstorms in summer, and there are 21 heavy rains in the country, but the storms and floods are generally light. The main rainstorm process, especially in June, the southern region lasted for 9 days, such a precipitation, causing guilt in many areas and a mudslide disaster. The other time is the North, and such an event in the northern city of Lanzhou is still relatively rare. In addition, in the autumn, continuous rain occurred in the southern part of China and in the southwestern part of the country, which has an impact on agricultural production.
Zhang Qiang pointed out that the number of high temperature days is high, and the high temperature extremes in the northeast and central and eastern regions are outstanding. From the historical high temperature changes, the number of high temperature days in 2017 is second only to the high temperature in 2017. The main high temperature occurs in the south and the Yangtze River to southern China. In addition, the rare northeast region is generally low in temperature, and high temperature weather occurred in 2018. The drought is generally lighter. From the historical changes, this year's drought can be said to be the lightest year in history. But in this light year, a series of phased droughts have also occurred. Spring and summer have seen droughts in spring and summer, and there have been droughts in the summer, mainly in the Jiangnan area. In addition, some severe autumn drought occurred in the autumn, in the middle reaches of the Yangtze River. Regional and staged droughts are obvious, but the impact is light; strong convective weather is less, economic losses are lighter; spring dusty weather in the north is less, and the impact is lighter; the largest sandstorm is in March.
In addition, Zhang Qiang also pointed out that the impact of stage smog is large. In 2018, there were five large-scale, continuous foggy and hazy weather processes in China. The number of procedures was the same as that of the previous year, but the local influence was heavy. At the beginning of the year, during the Spring Festival, Qionghai had a lot of aviation, ships and sports that affected the spring tourism. In addition, at the end of the year, in November, there was a large range of haze weather in North China and East China. At that time, because of the long time, our feelings were divided into two sections. The first paragraph was a serious flaw from the 24th to the 26th, and the PM2.5 exploded. Later, from November 30 to December 3, the Beijing-Tianjin-Hebei and the Yangtze River Delta all had very serious fog and hazy weather. In general, our climate in 2018 is still relatively normal.
Zhang Qiang said that for the impact of various industries, in a word, the impact of climate on agriculture is basically light, warm and water matching, and climatic conditions are still favorable for crop production. The impact of climate on water resources is generally a good year. In 2018, the light, temperature and water in the main grain producing areas are well matched, and the climatic conditions are favorable for agricultural production. However, some areas still have disasters such as heavy rain, low temperature, low temperature, low temperature, high temperature, etc., which have affected the growth and development of crops. The total annual water resources in the country is 639.37 billion cubic meters, which is 417.4 billion cubic meters more than normal. It belongs to the year of Fengshui, and Heilongjiang, Sichuan, Gansu, Qinghai and Ningxia are unusually abundant years. Compared with the average of the same period of 2001-2010, the vegetation growth preference of the northeastern China to the southwestern part of China and the central and western parts of South China in 2018, including the northeastern central and western parts, the western and northern parts of North China, the northwestern part of the country, the southwestern part of the country, and the southwestern part of the Yangtze River. The preference of the central and western regions of South China and the central and eastern Inner Mongolia is more obvious.
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