Why is Nanjing a stove?

Question 1: Why is Nanjing one of the four furnaces? Chongqing, Wuhan and Nanjing have always been famous summer centers in China, known as the "three furnaces" in the Yangtze River Basin. Their popularity is second only to Turpan in Xinjiang. Every year to the midsummer of July, the sun is shining, there is no wind in the field, and the temperature is always above 30℃. The hottest time is 44℃ in Chongqing, 42.2℃ in Wuhan and 43℃ in Nanjing. In the evening, although the sun sets in the west, the summer heat is still gone. Unlike Shanghai, although it is very hot during the day, there is a cool breeze at night to cool off the heat. Even if it's windy in these places, it's still unbearably hot! So, why are these places so hot? The main reason why Chongqing and Wuhan are particularly hot in summer is the influence of topography! These two places are located in the valley basin of the Yangtze River basin, surrounded by mountains, with a small plain in the middle, and the terrain is quite closed. The southeast wind blowing from the ocean was blocked by many mountains and hills on the way to these basins, and a considerable part of the water vapor turned into rain. In the basin, there is not much water vapor, which blows from the mountain to the basin and belongs to wind burning. It cannot turn into clouds to cause rain! On the contrary, the weather is getting drier and hotter. There are few clouds, sunny days and strong sunshine in the basin. Another reason is that the wind speed in the basin is very small, which is not conducive to ventilation, and the hot air in the basin is difficult to dissipate! It increases the heat!

Question 2: Nanjing is called "stove" because it is very hot in summer. Nanjing "stove" was rated as "one of the three stoves in the middle and lower reaches of the Yangtze River". It is one of the three hottest cities along the middle and lower reaches of the Yangtze River.

Question 3: Nanjing is known as one of the three largest stoves in China. Why do people call Wuhan, Nanjing, Chongqing and Nanchang the "four furnaces" in China in recent years? According to the analysis of historical meteorological data, these four cities have high temperature in summer, high temperature at night and high air humidity. Experts from Nanjing Institute of Catastrophic Weather and Climate introduced that the number of high temperature days above 35℃ is used to measure the heat degree of a city scientifically. Nanjing, Chongqing, Wuhan, Nanchang and other cities do rank first every year. According to statistics, the average annual high-temperature weather above 35℃ in four major cities is 19.3 days, and the average annual high-temperature weather above 37℃ is 4.5 days. The annual average minimum temperature above 28℃ at night is 13.2 days, and the annual average minimum 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". The heat in Chongqing originates from the topography. The "Chongqing Furnace" is an alchemy of Laoshan Mountain, which is a famous high temperature area in midsummer in China. Compared with the high temperature in the north this year, Chongqing is slightly milder. The heavy rainfall in early June eliminated some summer heat for Chongqing in early summer, but Chongqing people were not grateful for it. Mr. Han, who lives in Yongchuan, Chongqing, said: "The specialty of Chongqing is the summer in July and August, and the autumn tiger is the finale in September. The high temperature has not yet started this year. " Experts explained that the rainy summer in mountain cities is the result of industrialization: "the increase of industrial emissions (sulfur dioxide, tiny dust, etc.). ) affecting solar radiation, leading to an increase in precipitation and a relative decrease in high temperature days. " Such "artificial rainfall" is an "unexpected harvest" of environmental pollution to a certain extent. Jiangcheng Wuhan can be called "the first generation of furnace leaders". There are many rivers and lakes here, a lot of water vapor evaporates, and the whole city is shrouded in clouds of hot air. On the one hand, it slows down the radiation speed of geothermal energy into the air, on the other hand, it makes it difficult for the human body surface to dissipate heat, just like washing a sauna, sweating and sultry. 1934 On a certain day, Wuhan recorded a temperature of 4 1.3℃, which won the title of "Furnace Chief" for Jiangcheng. Nanjing has won the essence of "Summer 99" in the south of the Yangtze River: never leave your hands and sweat like taking a bath. The high temperatures in Nanjing and Shanghai are comparable, but Shanghai's coastal topography dwarfs Nanjing. "Because of the air pressure difference between land and sea, Shanghai is much cooler than Nanjing at night. Although the maximum daily temperature in the two places is similar, the average daily temperature in Shanghai is relatively low. " Professor Qian from the Department of Atmospheric Sciences of Nanjing University explained. Historically, the three "stoves" in Chongqing, Wuhan and Nanjing used to sit steadily, but the ownership of the "fourth stove" has always been controversial. Nanchang, Jinan, Shanghai and Guangzhou all made the list, and Nanchang finally won. In the summer of 2003, the highest daily temperature in Nanchang reached or exceeded 39.7℃ for 22 days, and the highest ground temperature exceeded 60℃. Citizens have jumped into the Ganjiang River to cool off the heat, and thousands of people swim on the river every day. In the same year, June 5438+065438+1October was late autumn, and the highest temperature in Nanchang reached 3 1.2℃. At present, all the "furnace cities" require to take off their hats, and only Nanchang has not applied yet.

Question 4: Why are Chongqing, Nanjing and Wuhan the three major stoves? Pay attention to the * * * characteristics of these three stoves, all of which are out of the plain, but all of them are surrounded by mountains, and all of them are cities along the Yangtze River, just around 30 degrees north latitude. Therefore, due to the influence of the downward flow of subtropical high, the temperature is high, especially in summer, it is difficult for water vapor to rise rapidly after evaporation, and it is more difficult for heat to dissipate. In addition, surrounded by mountains, the air flow speed is slow, so it is called a stove. I have lived in Wuhan for several years and have a deep understanding. In summer, it is even more steaming! Shanghai is much hotter than Nanjing now. But this name has been used for many years, and there are many inspection standards, which can't be obtained at once.

Question 5: Why is Nanchang one of the four furnaces? During the Republic of China, Chongqing, Wuhan and Nanjing were famous big cities along the Yangtze River, with hot summer temperatures, so they were called "three furnaces".

"Four Fireplaces": Nanchang, Chongqing, Wuhan and Nanjing, four cities with hot summer climate in the Yangtze River basin, are called "Four Fireplaces". Nanchang is the hottest and windless city among the four stoves.

Others say that Chongqing, Wuhan, Nanjing and Jinan are the four furnaces.

"Seven Fireplaces": Nanchang, Chongqing, Wuhan, Nanjing, Changsha, Hangzhou and Shanghai at the latitude of the Yangtze River are called "Seven Fireplaces".

The term "Stove City" originated from the folk, and was first written as "Turpan, Wuhan, Han Ji and Nanjing" in the geography textbook of middle school.

There is also a saying that Wuhan, Nanjing, Chongqing and Nanchang.

"Four great stoves"

People often refer to Wuhan, Nanjing, Chongqing and Nanchang as the "four furnaces" in China. From the analysis of historical meteorological data, these four cities have high temperature in summer, high temperature at night and high air humidity.

Question 6: Why are the four stoves basically along the Yangtze River? The three stoves along the Yangtze River: Chongqing, Wuhan, Nanjing, Wuhan and Chongqing, are really hot. The average temperature in July is around 33℃, and the extreme maximum temperature has reached 465,438+0.3 ~ 44℃. The high temperature lasts for a long time, and the average number of hot summer days above 30℃ is more than 70 days per year. The temperature changes little in the morning and evening, not only during the day, but also at night. The main reason for the formation of the three furnaces along the Yangtze River is that the high altitude in summer is controlled by the subtropical high pressure area; The second is the influence of topography. Chongqing, Wuhan and Nanjing are all located in the lower Yangtze River basin. The topography of the valley is like the bottom of a pot, surrounded by mountains, and the ground is difficult to dissipate heat, which makes the temperature rise continuously. Third, these places are densely covered with rice fields, with a lot of water vapor and high humidity. People are not easy to evaporate after sweating, and the heat dissipation efficiency of sweating is greatly reduced. High temperature and humidity make people feel sultry. In fact, these three stoves are not too hot. Judging from the days of high temperature above 35℃, Anqing has 20 days, and Hangzhou has 2 1.9 days along the river, both of which are more than Nanjing. Jiujiang has 25 days and Huangshi has 25.6 days, which is also more than Wuhan. Fuling 36.4 days, Wanxian 36.9 days, also above Chongqing. There are more high-temperature "stoves" outside the Yangtze River. For example, it takes 42.7 days in Guixi, Jiangxi, 42.9 days in Hengyang, Hunan and 4 1.6 days in Kaixian, Sichuan. So why are Nanjing, Wuhan and Chongqing called the three "stoves"? Perhaps it is because they are well-known big cities and the result of propaganda by many literati in history.

Question 7: I heard that Nanjing is not the fourth furnace now, right? be

The latest seven stoves are ranked last in Nanjing.

Question 8: Why is Wuhan called a stove? Wuhan is located in Jianghan Plain, surrounded by mountains. In addition, the annual evaporation of the Yangtze River, Hanjiang River and many lakes is very large. Because of the surrounding mountains and low terrain, the evaporated water vapor is not easy to disperse, resulting in sultry and humid Wuhan. As for why it is called a stove, it is not because it is the hottest city in China, but because its annual maximum temperature is higher than other cities in the same latitude. In the middle and lower reaches of the Yangtze River in China, there is a high temperature area in summer. For example, the highest temperature in Nanjing, Wuhan, Chongqing, China and Japan exceeds 35℃ for more than 20 days in a year, and there have also been high-temperature weather above 40℃, so people also call these three cities "three furnaces".

In Turpan Basin, a hot pole in China, an extreme maximum temperature of 49.6℃ was observed on July 1975. However, it is small in size and population, and it is hot but not stuffy. Therefore, in the hottest summer of the year, it is not Turpan that has the greatest impact on people's lives and work, but the Yangtze River basin with a vast area and a large population. During the high temperature in summer, there are three famous "big stoves": Nanjing, Wuhan and Chongqing.

The three stoves in Nanjing, Wuhan and Chongqing are really hot. The average temperature in July is around 33℃, and the extreme maximum temperature has reached 465,438+0.3 ~ 44℃. The high temperature lasts for a long time, and the average number of hot summer days above 30℃ is over 70 days per year. And the temperature doesn't change much from morning till night, not only during the day, but also at night.

The main reason for the formation of the three furnaces along the Yangtze River is that the high altitude in summer is controlled by the subtropical high pressure area; The second is the influence of topography. Chongqing, Wuhan and Nanjing are all located in the lower Yangtze River basin. The topography of the valley is like the bottom of a pot, surrounded by mountains, and the ground is difficult to dissipate heat, which makes the temperature rise continuously. Third, these places are densely covered with rice fields, with a lot of water vapor and high humidity. People are not easy to evaporate after sweating, and the heat dissipation efficiency of sweating is greatly reduced. High temperature and humidity make people feel sultry.

In fact, these three stoves are not too hot. Judging from the number of high temperature days above 35℃, Anqing has 20 days and Hangzhou has 2 1.9 days along the river, which is more than Nanjing. Jiujiang has 25 days and Huangshi has 25.6 days, which is also more than Wuhan. Fuling 36.4 days, Wanxian 36.9 days, also above Chongqing. There are more high-temperature "stoves" outside the Yangtze River. For example, it takes 42.7 days in Guixi, Jiangxi, 42.9 days in Hengyang, Hunan and 4 1.6 days in Kaixian, Sichuan.

So why are Nanjing, Wuhan and Chongqing called the three "stoves"? Perhaps it is because they are all well-known big cities, and there are many achievements in literati propaganda in history! According to the "New Express" report, the program of Phoenix Weather Station of Phoenix Satellite TV recently named the top three cities in the new stove, namely Fuzhou, Guangzhou and Hangzhou. In addition, Nanchang, Jinan and Shanghai are also listed as alternative stove cities. Chongqing, Wuhan and Nanjing, three old stove cities, have clearly announced that they have lost the title of stove. Lao Zao gave up the title. In geography textbooks, China's "three stoves" refer to Chongqing, Wuhan and Nanjing. Because the data shows that Nanjing, Chongqing, Wuhan and other cities have the highest number of high temperature days every year. But in recent years 10, one concentrated high temperature area in China was in North China and the other in East China. In 2004, Wuhan meteorological department announced farewell to the stove to the media. In the same year, Chongqing announced the abandonment of stoves. Nanjing bid farewell to the title of stove because of effective greening and falling temperature. The new stove made a strong appearance in Hangzhou: A few days ago, the Zhejiang Meteorological Observatory issued a warning signal of high temperature orange, and cities such as Hangzhou, Shaoxing and Ningbo experienced high temperature above 37 C and local 40 C. As early as July 5, the highest temperature in Hangzhou had jumped to 39.3 C. As of the 30th, the number of high temperature days in Hangzhou has reached 26, and the rising trend of temperature has not diminished. Hangzhou * * * opens air-raid shelter for citizens to enjoy the cool. Fuzhou: High fever lasts for 3 1 day. As of July 30th, the highest temperature in Fuzhou has been above 35℃ for 3 1 day, setting a record for continuous high temperature days 1 1,880 days since the meteorological record in the city. In 2003, the temperature in Fuzhou was above 40℃, and the extreme highest temperature in the whole province appeared in July of 1967, and it was 43.2℃ in Fuan, Ningde. Guangzhou: This year's high fever day broke the record. On July 30th, Guangzhou was 36.5℃. Since July this year, the temperature has been above 35℃ for 20 days, leaving behind the record of July 2003 17 days. Experts believe that Chongqing, Wuhan and Nanjing have become the "three furnaces" in the traditional view, except for the high temperature in summer. & gt

Question 9: The main reason why Nanjing has become a stove is low latitude and strong solar radiation. Low latitude means close to the equator, that is, close to the sun. So the solar radiation is very strong.

The latitude is 90 degrees. The equator is 0 degrees, and it is arranged towards the poles. The smaller the circle, the greater the degree.

Low latitude range: between 30 north and south latitudes; For example, Sanya, Hainan, north latitude 18 degrees; Chongqing is 30 degrees north latitude.

Question 10: Which four cities are Sizao? Does Jiangsu belong to the four furnaces in Nanjing? Nanchang, Chongqing, Wuhan and Nanjing in the Yangtze River valley are the four major cities with hot summer climate.