Chengdu has soared to ＂the first heat in the country＂, Xi ‘an will meet the high temperature of 42℃, and the ＂four furnaces＂ will be shuffled again？
The "four stoves" may have to be shuffled again.
Sichuan is much hotter than Turpan. On July 6th, the highest temperature in Jianyang, Chengdu reached 40.3℃. In the real-time temperature at 14: 00 on July 7th, the temperature in Jianyang, Chengdu reached 39.7℃, ranking the top in the national high temperature list. Xi’ an is not to be outdone. According to the forecast of Xi’ an Meteorological Observatory, the highest temperature in Xi’ an will reach 42℃&hellip on August 8-9. …
In contrast, whether it is the traditional "four stoves" or the "new four stoves", Chongqing, an old stove city that has never fallen off the list, has the highest single-day temperature in the past week hovering between 32 C and 38 C, which makes people wonder whether Chongqing has quit the "stove group chat".
However, some netizens said that Chongqing has always been "hot late and hot for a long time" and may not focus on it until August.
It is not known who can rush to the end of this year’s "Four Fireplaces" card game.
Forecast chart of high temperature falling area on July 7 (Source: official website, China Meteorological Bureau)
Chongqing Quits "Fireplace Group Chat"?
On July 6, the topic of "Chongqing’s withdrawal from the four major stoves" triggered a heated discussion among netizens. Some netizens published an article saying, "Perhaps the four major stove cities in China were Chongqing, Wuhan, Nanchang and Nanjing, and Chongqing deserved the first place. But judging from the weather changes this year, Chongqing will be completely cool. The previous surface temperature in Xi’ an reached 70 C, and the surface temperatures in Zhengzhou, Jinan and Shijiazhuang were also around 66 C. I believe that Chongqing will become cooler and cooler in the future. "
The ink weather APP shows that the highest temperature in Xi’ an has exceeded 40 degrees Celsius for four consecutive days from 7 to 10.
According to the earlier data of Xi ‘an Meteorological Observatory, the highest temperature in Xi ‘an has been 40℃ for a week since July 3rd. At 9: 20 on July 7, the reporter received the news that the Xi ‘an Meteorological Observatory upgraded and released the high temperature red warning signal in Xi ‘an. The reporter inquired about the China Meteorological APP, and it was predicted that the highest temperatures in Xi ‘an in the next three days would be 40℃, 41℃ and 40℃ respectively. The highest temperature in Chongqing in the next three days will be 39℃.
Red Star News reported on July 7 that among the real-time temperatures of 2418 national meteorological observatories in China at 17: 00 on July 6, Sichuan successfully overheated Turpan, and the top three hottest places in China were in Sichuan, followed by Yibin Gaoxian, Leshan Mabian and Chengdu Jianyang at 40.3℃. Among them, at 18: 00 on July 6, the Meteorological Observatory of Leshan City, Sichuan Province issued a live report on high temperature weather. On that day, the highest temperature in Mabian County of Leshan City reached 40.7℃, which set a new record for the highest daily temperature in Leshan City since the meteorological record was recorded in 1951.
On July 7th, the helmet temperature of a takeaway brother in Xi ‘an reached 47.2℃. (Source: Huashang. com)
In response to a netizen’s statement that the surface temperature reached 71℃ before Xi ‘an, the extreme news reporter found that the surface temperature of Xi ‘an Jinghe Station reached an astonishing 74.1℃ at 14: 00 on June 17th at Xi ‘an Meteorological Observatory.
Xi’ an, Chengdu and other places continue. On the other hand, Chongqing, which is known as the furnace city, has a daily maximum temperature of 32℃ to 38℃ in the past week.
Many netizens said, are the "new four stoves" to be re-ranked?
The constantly shuffling "four stoves"
After consulting the information, Jimu journalists found that the official has not made a clear definition of the "four furnaces" cities, but the relevant departments have published 10 provincial capitals or municipalities directly under the central government with the highest summer heat in China.
According to Modern Express, the four big stove cities are folk sayings, and generally refer to Wuhan, Nanjing, Chongqing and Nanchang along the Yangtze River. This combination has also been compiled into geography textbooks.
In 2010, china weather tv’s official Weibo "China Meteorology" released a new list of stove cities. This list is based on the meteorological data of China from 1981 to 2010, and the evaluation standard is mainly high temperature days. The results show that the top ten cities with high temperature days are Fuzhou, Chongqing, Hangzhou, Haikou, Changsha, Nanchang, Wuhan, Nanning, Xi ‘an and Guangzhou. However, Wuhan, Nanjing and Nanchang withdrew from the traditional "Four Fireplaces" list, and Nanjing did not even enter the top ten.
In July, 2017, the National Climate Center of China Meteorological Bureau announced the hot summer cities in China to the public for the first time. This time, through the comprehensive analysis of meteorological data of capital cities and municipalities in China, the results show that the top 10 capital cities or municipalities in summer are: Chongqing, Fuzhou, Hangzhou, Nanchang, Changsha, Wuhan, Xi ‘an, Nanjing, Hefei and Nanning. This list considers more meteorological indexes, including heat index (an index that mainly considers the comprehensive influence of temperature and relative humidity on human comfort), high temperature days, continuous high temperature days, average maximum and minimum temperatures in summer, etc. Since then, Chongqing, Fuzhou, Hangzhou and Nanchang have been called "the new four stoves" by netizens.
How to define the furnace city? On July 7th, Xu Jianguo, the chief expert of Tongliao Meteorological Station, told Jimu journalist that there is no clear official definition of furnace city. Besides latitude and sunlight, there are also precipitation and surrounding terrain and environment that affect the temperature of a city. In addition, factors such as temperature, surface temperature and somatosensory temperature will become reference factors for people to judge the heat degree of a city. Therefore, the causes of high temperature and heat in a city need comprehensive analysis.
Jimu journalists inquired about the highest temperature in the next seven days and the days of high temperature and precipitation in the next 40 days in six cities: Wuhan, Changsha, Chongqing, Nanjing, Xi ‘an and Chengdu. Among them, the highest temperature in Wuhan in the next seven days is 37℃, and the number of high temperature days in the next 40 days is 11 days; The highest temperature in Changsha will be around 36℃ in the next seven days, and there will be 9 high temperature days in the next 40 days. The highest temperature in Chongqing in the next seven days is 39℃, and there will be 13 high temperature days in the next 40 days. The highest temperature in Nanjing in the next seven days is 38℃, and there will be 20 days of high temperature in the next 40 days. The highest temperature in Xi ‘an in the next seven days will be 41℃, and there will be 10 days of high temperature in the next 40 days. The highest temperature in Chengdu will be 37℃ in the next seven days, and there will be four days of high temperature in the next 40 days.
Judging from the highest temperature in the next seven days, Xi ‘an is undoubtedly the hottest provincial capital city, and judging from the number of high temperature days, Nanjing takes the lead with 20 days of high temperature days.
Some netizens said that Chongqing has always been hot late and hot for a long time. August is the starting point of Chongqing. Who is the stove in the end? It is estimated that we will wait until the end of August and the beginning of September to say this.
Why are Chengdu and Xi ‘an so hot?
According to the traditional calendar of China, the first day of this year is July 13th. Why have Chengdu and Xi ‘an started to experience continuous high temperatures recently?
Sichuan has the top three highest temperatures in the country (Source: screenshot)
"It is really rare, and it needs to be judged by the Sichuan Climate Center." Lv Xuedong, chief forecaster of Sichuan Meteorological Observatory, said in an interview with the media that the current data of Sichuan Climate Center show that this persistent high temperature is the widest and strongest this year. Up to now, 60 county stations in the province have experienced the highest temperature in the same period in history. On July 6, high temperature weather occurred in all 15 county stations in Chengdu, with 14 county stations being the highest in the same period in history and 3 county stations being the highest in history, with Jianyang reaching 40.4℃.
Why can Sichuan beat other cities this time and become the hottest in the country? Lv Xuedong believes that this all depends on the influence of the Qinghai-Tibet High. "From a national perspective, the continental high in our Sichuan Basin is the most obvious, and the main influence range of the Qinghai-Tibet High is in and around the Sichuan Basin."
As for the principle of high temperature, Lv Xuedong explained that, first of all, the downward flow is formed under the control of continental high pressure, and the atmosphere goes from high altitude to low altitude. The lower the air pressure at high altitude, the higher the air pressure at low altitude, and the air mass will be compressed from high altitude to low altitude, and the temperature will naturally rise. Secondly, under the control of high pressure, the weather is dominated by sunny partly cloudy, and the warming effect of solar radiation will be very obvious.
Xu Jianguo told Jimu news reporter that the high temperature in Chengdu has something to do with its location in the Sichuan Basin and low terrain in the middle.
According to the Huashang Daily, due to the strengthening of the mainland high pressure, it is expected that the province will be mainly sunny to cloudy in the next three days, with high temperature above 35 C in southern Shaanxi, most of Guanzhong and most of southern Shaanxi, including the highest temperature along the Yellow River in northern Shaanxi, southern Guanzhong and eastern Shaanxi. It can reach 38 to 40 C, and the local temperature is above 40 C.
Another researcher wrote that Xi ‘an is located in the Guanzhong Plain, which belongs to the warm temperate and semi-humid continental monsoon climate. The topographic conditions of Weihe Valley are coupled with the man-made heat release of urbanization, which makes the extreme high temperature intensity much higher than the surrounding areas. Quantifying the anthropogenic heat emissions of typical big cities in China, Xi ‘an belongs to the contribution area of strong heat island, second only to Shenzhen and Wuhan.