Zhejiang monopolizes the top ten hot cities in China

In fact, the meaning of "Zhongfu" is a comprehensive ambush under high temperature On the first day of "Zhongfu", the high temperature was in Hangzhou, which was a success Yesterday, the highest temperature in Hangzhou was 39.6 ℃, which is the hottest this year Accidentally, it set a new record for the same period in history Yesterday morning, the provincial meteorological station issued the first high temperature orange warning this year According to the hourly temperature data of 2418 national automatic stations, chinaweather.com released yesterday's national high temperature map As of 19:00 yesterday, Zhejiang Province had the top 10 monopolies Among the data at 16:00, Hangzhou ranked second in the country Among the data at 19:00, Hangzhou ranked third Today, the forecast is another hot 39 ℃, and how high is the final temperature? Sincerity is not optimistic I know Hangzhou is very hot in summer, but I didn't expect it to be so hot! My companions and I was shocked What is "baking" this "heaven on earth"? Three days after today and tomorrow, there is no hottest, only hotter yesterday at 4 pm After the meeting, I was ready to go back to work The sunshine hurt my arm How do you feel hotter than 12 noon? Go back to check, as expected, yesterday's hot extreme, in the afternoon 4:00 to 4:30: 4:00: 39.5 ℃, 4:30: 39.6 ℃ This year is the hottest, the highest temperature in the same period of history Each record is easily broken Therefore, the weather record is worth a piece of wool money Yesterday, Shengzhou, Xinchang and Wuyi of Shaoxing ranked first at 39.9 ℃, followed by Yongkang and Lishui at 39.8 ℃, and Qiandao Lake, a cool resort, was 37.1 ℃ yesterday Yesterday at 9:18 and 10:45, Hangzhou meteorological station and provincial meteorological station issued high temperature orange warning successively Three days after today and tomorrow, the highest temperature in Hangzhou is predicted to be 39 ℃ of yishuier Since 1951, the longest continuous record of over 39 ℃ in Hangzhou history is from July 30 to August 3, 2003 If, as predicted, Hangzhou continues to exceed 39 ℃ for four consecutive days, one step away from the longest record In the forecast, on the morning of the 26th and 27th, Hangzhou had a minimum temperature of 30 ℃, which means that the temperature of the whole weather in those two days was above 30 ℃ According to the central meteorological station, the next hot day in the middle and lower reaches of the Yangtze River is likely to be the longest round of high temperature since this year In some areas, it is likely to set a new high this year, especially in Changsha, which will even have a high-temperature Grand Slam in July Think of the "Zhongfu" as the hottest place in Sanfu Today is the second day of "Zhongfu" This year, Zhongfu has another 20 days I feel like crying Weather pusher: the subtropical high, the wind direction and the typhoon have had a very hard summer Hot, can not see the end, but also a higher level Why is Hangzhou so hot and hot for so long this year? According to Mao Yanjun, a senior engineer at the Provincial Meteorological Observatory, this year's subtropical high is particularly stable Because the rain belt in North China is very strong and stable, the subtropical high can hardly be lifted to the north, so it has to shrink in the middle and lower reaches of the Yangtze River for a long time It is necessary to know that, in the area controlled by the subtropical high, the prevailing downdraft is conducive to sunny and warm-up, and it will also conveniently transport the water vapor from the sea to the land With the increase of humidity, the human body temperature will soar in a straight line On the other hand, at present, this year's typhoon is located in the south, mainly concentrated in Fujian and Guangdong, with little impact on Northern Zhejiang In addition, at this time, the wind in Hangzhou is mostly southwest or southerly The wind in this direction is dry and hot If it is easterly, it will be much better Because the easterly wind has a lot of water vapor, which is conducive to evaporation and heat dissipation Another effect is that this year's plum blossom is very early, and it will be hot as soon as it leaves, so you will find out why it has been so hot for so long City pusher: in fact, the heat island effect is not focused on the meteorological reasons, but on the city we live in The heat island effect in Hangzhou is more and more obvious According to the data of the National Climate Center, from 1951 to 2001, the annual average temperature in China increased significantly, and the average temperature increased by about 1.1 ℃ In recent years, extreme high temperature events also show the trend of expanding the scope and increasing the frequency Cities bear the brunt of it, and the heat island effect only rises The urban heat island effect refers to the phenomenon that the air temperature in the city is significantly higher than that in the surrounding suburbs The ground temperature difference between the high value area of Hangzhou heat island and the suburbs can reach 8 ℃ - 10 ℃, and the difference will be greater in August Li Xiaoquan, chief meteorological expert of China Weather Network, said that the heat island effect is the common result of natural climate change and human activities intervention On a large scale, global warming is the general trend affected by ocean current changes From a small regional environment, the impact of human activities on the environment is more obvious, which is the main reason With the acceleration of urbanization in China, urban population, buildings, traffic pressure, production scale and artificial heat sources are increasing The impact is increasing, which leads to obvious urban heat island effect In the same area, the temperature in the city is 3-5 ℃ higher than that in the suburbs, which is a strong evidence that human activities affect the temperature environment According to the prediction of the Intergovernmental Panel on climate change (IPCC), the trend of global warming will continue in the future, and high temperature heat wave has become one of the most serious meteorological disasters Why is Hangzhou getting hotter? Hangzhou repeatedly broke into the top 10 of the national high temperature, which is not consistent with the gentle tone of "heaven on earth" Mao Yanjun said that in recent years, the heat sources in the city are significantly more than those in the suburbs For example, with more and more air conditioners, cars and boilers in hotels and restaurants, the amount of heat emitted will increase accordingly Hangzhou is a city surrounded by mountains on three sides, which is not conducive to heat diffusion In this regard, Shanghai, an ocean city, has an advantage over us, with the highest temperature lower than Hangzhou Yesterday, the road surface temperature in Hangzhou was 70.8 ℃, and last week it was above 70 ℃ Mao Yanjun said that the roads in the city are either cement or asphalt The water content is low, and the water is easy to evaporate The road is very hot Once the road is hot, the basic temperature of the city is high Unlike the rural areas, the mud water content is relatively high, so the temperature cannot rise There are two other key points First, there are many tall buildings in the main urban area The buildings have changed the surface conditions, damaged the wind direction and reduced the wind speed The average wind speed in Hangzhou has decreased year by year When the wind is small, the heat of human body is hard to be emitted, so it naturally feels hot For Hangzhou, an inland city, the strong wind is too important, because the number of vehicles in the urban area is increasing year by year, and the heat released when burning oil, together with the automobile exhaust, discharges a large number of small particles, which are suspended in the air If there is no strong wind to disperse for a long time, the suspended solids will lead to the increase of clouds "With a lot of clouds, the sky over the city is like a thick quilt, which is not conducive to the radiation cooling of the ground It is accumulated to the next day and heated on the heat If there is no cloud at night, the ground will be easily cooled by radiation, and the next day's temperature surge will not be very severe." Moreover, the green area of the main urban area is far less than that of the suburbs At present, the urban green area of 5 million square meters in Hangzhou is mainly concentrated in the periphery of the city, so the natural temperature of the suburbs will be lower than that of the urban area If the green area of a city reaches 30%, the temperature of the city will drop by 2-3 ℃ At the end of the expansion of the city, even the thermometer in the shutter box was dragged down The air temperature mentioned by the meteorological department refers to the air temperature in the Venetian blinds at a distance of 1.5m from the ground, which is the most authoritative and representative, and is also an international practice The highest temperature of every day in Hangzhou is measured by a thermometer in a hundred leaf box on the Mantou mountain Mao Yanjun said that in the early years, Mantou mountain belonged to the suburb of Hangzhou, with few people, cars and high-rise buildings, so it was less disturbed by the outside world "Now, Mantou mountain belongs to the main urban area There are many high-rise buildings, people and cars nearby, and the heat from various human activities affects the observation data in the shutter box to some extent."