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Why is Guangzhou not as cold as Guizhou in winter?

Climatic characteristics of Guizhou

Beautiful scenery, rich national feelings everywhere, blooming flowers, warm in winter and cool in summer. Guiyang is known as the second spring city of China. There is no cold in winter, no heat in summer, more clouds and less sunshine, and abundant rainfall, which is a major feature of Guizhou's climate and attracts many Chinese and foreign tourists to visit.

Temperature:

It's too cold up there. The places with the highest altitude are generally the coldest, but there is an exception in Guizhou. The lowest average temperature in midwinter 1 month 1.7℃ is not in Weining at an altitude of 2,300m, but in Dafang at an altitude of1800m. The average temperature in Guizhou province 1 month can reach 10.2℃, which appears in Luodian and Ceheng areas near Hongshui River. There is no winter here.

The annual average temperature is greatly influenced by altitude and topography. Most areas in Guizhou are above 14℃, the highest in Luodian is 19.6℃, and the lowest in Weining is only 10.4℃. The height difference between the two places is1822.2m, which is equivalent to the north-south distance from Guiyang to Beijing of about1500km. This is the characteristic brought by the mountainous climate in Guizhou.

Average temperature in the hottest month (July):

The highest temperature along the river is 27.9℃, and the lowest temperature is 17.5℃. The hottest month with the highest temperature along the river is a well-deserved summer; Weining, the hottest month and the lowest temperature month, can only be considered as spring. It and the nearby water city are areas where there is no summer in Guizhou climate. When you are in Weining Street in dog days, you will see people wearing all kinds of clothes. The old man is afraid of catching a cold and wears cotton-padded clothes. Middle-aged people only wear jackets. Young people look handsome in straight suits, while girls wear elegant skirts to show the beauty of lines.

Extreme maximum temperature: the extreme maximum temperature in the province can reach above 40℃. Luodian, Chishui and Tongren, the marginal areas with low altitude, are three high-temperature centers, and the highest temperature in Tongren reaches 42.5℃, which is comparable to Nanjing, Wuhan and Chongqing, which are known as the three major stoves in China.

Extreme minimum temperature:-15.3℃ in Weining is the lowest in the whole province, but there are few opportunities. This value is insignificant compared with the severe cold of -30 ~-40℃ that often occurs in Northeast China.

General situation of climate in Guangzhou

Guangzhou, including the urban area, Panyu City, Zengcheng County, Huaxian County and Conghua County, is located in the south subtropical monsoon climate zone with east longitude12 degrees 57 minutes-1 14 degrees 03 minutes and north latitude 22 degrees 35 minutes -23 degrees 35 minutes. According to the meteorological data of the Institute of Applied Meteorology of Guangzhou Meteorological Center for 40 years, the climate characteristics of Guangzhou are as follows:

Guangzhou is located at low latitude, and the surface receives more solar radiation. At the same time, due to the influence of monsoon, the ocean warm current forms a climate of high temperature, high humidity and rainy in summer. In winter, the cold wind in the northern mainland forms a climate of low temperature, dryness and little rain.

1. Temperature: the annual average temperature is 2 1.4-2 1.9 degrees, 2 1.4 degrees in the north, 2 1.7 degrees in the middle and 2 1.9 degrees in the south. The hottest July-August, the average temperature is 28.0-28.7 degrees, and the absolute maximum temperature is 38.7 degrees; The coldest is 65438+ 10 month (February in some years), the average temperature is 12.4- 13.5 degrees, and the absolute minimum temperature is -2.6 degrees. The average temperature rises gradually from1-July every year. 165438+1Frost may occur from late October to mid-February.

2. Rainfall: The average annual rainfall is 65,438+0,623.6-65,438+0,899.8mm, which is more in the north than in the south. The annual rainfall increases gradually from 65438+ 10, and increases sharply in April, with the maximum rainfall in May-June, mainly in the flood season from April to September. 65438+ 10 is dry in rainy season from March to the following year, with frontal rain in the first flood season from April to June, tropical cyclone rain in the second flood season from July to September, followed by convective rain (hot thunderstorm).

Three. Illumination: (1) The annual average solar radiation value is 4367.2-4597.3 MJ/m2, which is distributed in the south and high in the north. In a year, solar radiation is the lowest in February and the highest in July. (2) Sunshine Hours When the average sunshine hours of the year is 1 820- 1 960, the annual sunshine percentage is 4 1%-44%, which is more in the south and less in the north. Seasonally, summer is the most, followed by autumn, winter again, and spring is the least.

Fourth, the wind: affected by the monsoon, the winter in South China (65438+ 10) is controlled by cold high pressure, with northerly winds and northeast winds; In spring (April), the wind direction is messy, but there are more southeast winds; In summer (July), influenced by subtropical high and South China Sea low, southerly winds predominate; In autumn (65438+ 10), the summer monsoon turns into winter monsoon, with northerly winds as the main wind. In terms of average wind speed, the wind speed is higher in winter and spring and lower in summer. However, tropical cyclones often attack in summer, and the wind speed can increase sharply to a gale of magnitude 8 or above.