Which four cities are the four stoves?

The four stoves refer to Chongqing, Wuhan, Nanchang and Changsha.

Sizao refers to the four hottest cities in China, and is the name of the four hottest cities in China in summer, which are generally concentrated in the Yangtze River basin in southern China and Huanghuai area in northern China. It first started in the Republic of China, when Chongqing, Wuhan, Nanchang, Changsha and other places in the upper, middle and lower reaches of the Yangtze River were hot in summer, so it was called "four stoves".

20 19 updated four new stoves, namely Chongqing, Fuzhou, Hangzhou and Nanchang. The National Climate Center of China Meteorological Bureau released the list, comprehensively analyzed the meteorological data of provincial capitals and municipalities directly under the Central Government of China, and released the hot summer cities in China to the public authority for the first time.

The comprehensive analysis shows that Chongqing, Fuzhou, Hangzhou, Nanchang, Changsha, Jinan, Wuhan, Xi 'an, Nanjing, Hefei and Nanning are the top 10 provincial capitals or municipalities in summer. Among them, Chongqing, Fuzhou, Hangzhou and Nanchang, which are in the forefront, have been named "the new four stoves" by many netizens.

New standard

The analysis and research of the new four-stove "hot city" released on 20 10, the factors considered include heat index (mainly considering 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.

Scientifically, the hot degree of a city is measured by the number of days with high temperature above 35℃ and the combination of extreme high temperature value and relative humidity. The days with the highest temperature above 35℃ in a year are more than 20 days, and there have been high temperature weather above 40℃. Everyone calls such a city a "stove".

Different from the indexes such as extreme maximum temperature or days of hot weather (daily maximum temperature is 35℃), the thermal index comprehensively considers the influence of temperature and relative humidity on human comfort, and has a unique calculation formula. It is generally believed that the greater the heat index value, the more uncomfortable the human body will feel.

Because under the condition of high temperature, if the air is dry, it can dissipate heat through sweating and sweat evaporation, but if the air humidity is too high, the efficiency of people's cooling system will be reduced, and sweat will not evaporate, which will make them feel very uncomfortable.

Nanjing, Chongqing, Wuhan, Nanchang and other hot days are indeed in the forefront. The average annual high temperature weather above 35℃ in the four major cities is 19.3 days, and the average annual high temperature weather above 37℃ is 4.5 days. The minimum temperature above 28℃ at night is 13.2 days, and the temperature above 30℃ is10.9 days. Coupled with the sultry heat of "no wind in the city", it is no wonder that there is a "stove".

Baidu Encyclopedia-Four Fireplaces