Traditional Culture Encyclopedia - Weather inquiry - What is the lowest temperature in Yulin history?
What is the lowest temperature in Yulin history?
Yulin City is one of the areas with high sunshine value in China. The sunshine hours in Shaanxi Province are the longest, with an average annual sunshine hours of 2593.5 ~ 29 14.4 hours, the highest in the northeast and the lowest in the south. There is more sunshine in May-August in a year, and less sunshine in 12- February of the following year. The average sunshine percentage is 59 ~ 66%, and there is little difference in Yulin. It is the largest in winter (12 ~ 65438+ the following year 10 month), and gradually decreases from spring to summer to the minimum in late summer and early autumn (July-September), and increases rapidly from Mid-Autumn Festival to winter. ?
The temperature in the four seasons is obvious, the temperature in spring is higher than that in autumn, the temperature in spring is fast and unstable, and the temperature in autumn is fast. Winter is controlled by the cold air mass in the north, with high air pressure, clear weather and high clouds. In winter, the average temperature is -7.8 ~ 4. 1℃, and the temperature change gradient is large, and the gradient direction is from southeast to northwest. 65438+1frozen from the end of October to the beginning of April of the following year. In general, the depth of frozen soil is 1 ~ 1.2m, and the temperature rises obviously after spring, with an average daily temperature increase of about 0.2℃.
Extended data
There are 48 kinds of mineral resources in 8 categories, of which coal, oil, natural gas and rock salt account for 86.2%, 43.4%, 99.9% and 100% of the total mineral resources in Yulin City respectively. There are 6.22 million tons of coal, 6.5438+0.4 million tons of oil, 65.438+0 billion cubic meters of natural gas and 65.438+0.4 billion tons of rock salt underground. The combination and allocation of resources are rare at home and abroad.
Coal and charcoal are predicted to be 694 billion tons, with proven reserves of 654.38+05 billion tons. Underground coal in the city accounts for 54%, accounting for about one-fifth of the national reserves. The predicted natural gas resources are 4.10.8 trillion cubic meters, and there are 4 proven gas fields, with proven reserves of1.10.8 trillion cubic meters.
It is predicted that the oil resources are 600 million tons and the proven reserves are 360 million tons. The predicted resources of rock salt are 6 trillion tons, the proven reserves are 885.7 billion tons, accounting for about 26% of the total rock salt in China, and the proven reserves of lake salt are 65.438+0794 million tons. In addition, there are abundant coalbed methane, kaolin, bauxite, limestone, quartz sand and other resources.
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