What is the lowest temperature in Bin County in winter?
This county has a warm temperate semi-arid continental monsoon climate. It has the characteristics of rain and heat in the same season, extreme cold and heat, and four distinct seasons.
Winter is mainly affected by the Mongolian high pressure, with scant precipitation, cold, dry and long winter. In spring, the Mongolian high pressure gradually weakens, and the tropical warm air mass gradually moves northward. The temperature rises rapidly and precipitation increases. Due to frequent cold air activities, the weather is changeable and prone to "late spring cold", strong winds, frost and other weather conditions. Summer is mainly affected by tropical high pressure, resulting in a hot climate with frequent thundershowers, accompanied by strong winds or hail. There are often droughts in late summer. In autumn, the Mongolian high pressure gradually strengthens, and the subtropical high pressure begins to retreat southward. When the cold air from the north moves southward, it is blocked by the Qinling Mountains and moves slowly. Therefore, there are frequent rains in autumn, and the climate is cool and humid, but there is frost damage.
The first holiday photo
The amount of solar radiation in the territory throughout the year is 115.2 kcal/cm2. The maximum in June is 14.2 kcal/cm2; the minimum in December is 5.9 kcal/cm2. The total radiation dose in the previous year was 117.6 kcal/cm2, and that in the river was 112.0 kcal/cm2. The average daily radiation dose from April to August was more than 400 kcal/cm2, and the daily average from May to June was 470 kcal/cm2. card/cm2 or more. The amount of solar radiation in spring and summer is abundant, which is very beneficial to the high yield of grain and oil crops and fruit trees. The amount of solar radiation from September to October is low, only 240-290 calories/cm2, which is not conducive to the maturity of autumn grain.
The average annual sunshine hours is 2210.8 hours. June has the most hours, with an average of 237.3 hours; February has the least, with an average of 147.7 hours. The average annual sunshine on the plateau is 2298.8 hours, the river channel is 2125.4 hours, and the shady slopes of Taiyu and other narrow rivers are less than 2001 hours.
The annual sunshine percentage within the territory is 52%, and the distribution trend is that the northern plateau is higher than the southern plateau. The sunshine rate in January is 56% in winter, roughly the same in spring and autumn, both at 47%, and in July the sunshine rate in summer is 51%.
Section 2 Temperature
1. Temperature
The annual average temperature is 9.7℃, the Qikachuan Road is 11.1℃, the plateau area is 9.3℃, and the annual extreme maximum temperature is 40℃ ℃, the extreme minimum temperature is -22.5℃, and the annual temperature range of the average temperature is 31.5℃. The daily maximum temperature occurs at around 14:00, and the daily minimum temperature occurs at 7 to 8 o'clock (6 o'clock in summer).
January is the coldest month, with an average temperature of -3.3℃ and an average temperature of -4.5℃. Chuandao—2.9℃. July is the hottest month, with an average temperature of 24.4℃, 21.5℃ on the plateau and 25℃ on the river road. In winter, the county generally has low temperatures, and it is even colder on the plateau. Summer is generally hot, but the temperature difference between morning and evening is large. Winter (average daily temperature ≤10°C) is long, lasting 160-170 days in Sichuan Road and 180-190 days in Didian and Hanjia. Summer (average daily temperature ≥22°C) is short, lasting 70 days in Sichuan Road and only 10 days in Didian and Hanjia. Winters are long and summers are short, which is obvious throughout the county, especially in the Sichuan Plain. The difference between the length of autumn and winter in Sichuan Plateau is small, about three months in spring and two months in autumn.
The accumulated temperature of ≥0℃ activity in the territory was 4273.4℃, with the first day being February 22 and the last day being November 28, lasting 255.9 days. The active accumulated temperature of ≥3℃ is 4200.1℃, with the first day being March 9 and the last day being November 19, lasting for 232 days. The active accumulated temperature of ≥10℃ was 3636.4℃. The first day was April 15th and the last day was October 18th, lasting 185.4 days.
The frost season in this county generally starts in mid-October, on October 13th on the plateau, September 24th at the earliest, and November 1st at the latest, and on October 16th on the Sichuan Road, and September 25th at the latest , no later than November 3rd. The last frost period is usually around late April of the following year, on April 24th on the plateau, March 26th at the earliest and May 17th at the latest; on April 21st in Sichuan Road, March 25th at the earliest and May 23rd at the latest . The frost-free period is 175.6 days, 172 days on the plateau and 177 days on the Sichuan Road. In some years, due to the intrusion of cold air from Siberia, severe cooling weather occurs over a large area and lasts for a long time (2-3 days), and frost may suddenly appear, seriously damaging crops.
2. Ground temperature
The annual average ground temperature in this county is 13.1℃. The average ground temperature in January is -20℃, and the average ground temperature in July is 6℃. The extreme maximum ground temperature is 68.5℃ (August 18, 1975), and the extreme minimum ground temperature is -27.6℃ (January 13, 1977). The annual changes in ground temperature are roughly the same as the annual temperature changes, with the lowest in January and the highest in July and August.
The average ground temperature at different depths is 12.8℃ for 5 cm, 12.9℃ for 10 cm, and 13.0-13.2℃ for 40-160 cm. The average depth of frozen soil is 59 cm, of which 68 cm is on the plateau and 50 cm in the river channel. The depth of frozen soil is the largest in January and February.