Research report on precipitation and sunspot activity in Quzhou in recent 50 years

Solar activities are not only 1 1 year and 22 years, but also 80-90 years, 200 years, 500 years and 8000 years. It affects the precipitation on the earth.

When sunspots are in low tide years, there may be cold winter or severe winter in China. Since the founding of New China 60 years ago, China has experienced two coldest winter disasters, both in low sunspot years. From the first ten days of 1954 1 February to the middle of 19551month, 22 provinces and cities in China experienced a low-temperature ice and snow climate with wide influence, strong cold wave intensity and long duration. The freezing in northern Guangdong is serious, and even the extreme low temperature of MINUS 7.3 degrees Celsius appears. From 1954 1 February 3 1 day to 1955 1 month 12, the average daily temperature in Guangzhou for three consecutive days 13 was only 7.5 degrees Celsius, and the lowest daily average temperature was only 5 degrees Celsius. 1954 is a low year of sunspots, and the relative sunspot number is only 4.4. 1976 1 late February to 19771mid-month, there were rare severe cold waves and low-temperature snow and ice weather in 13 provinces and cities in China. From 1976 1 February 26th to 19771month15th, Guangzhou experienced a winter climate in which the daily average temperature was lower than 10℃ for 2 consecutive days since meteorological observation was recorded. 1976 is also a low year for sunspots, and the relative number of sunspots in the whole year is only 12.6. It is reported that in low sunspot years, some radiation intensity of the sun will decrease, which will cause changes in the earth's atmospheric circulation and even cause abnormal climate of the earth. Meteorological disasters such as drought, rainstorm, flood, rainstorm, high-temperature heat wave and low-temperature chilling injury will occur in some areas. Therefore, the activity of sunspots is closely related to the precipitation in China.

The research on the influence of solar activity on weather and climate has a long history. In the study, it is agreed that solar activity will cause changes in solar radiation, geomagnetic field and atmospheric circulation, thus affecting the changes of weather and climate. Our country carried out this research very early. Mr. Zhu Kezhen (1926) once pointed out that there is a positive correlation between precipitation and solar activity in the Yangtze River basin, that is, the more sunspots (relative number R), the more precipitation; When there are few sunspots, there is less precipitation. Mr. Tu Wangchang (1935) found that when sunspots increased, the precipitation in southwest China in July was higher than that in the same period of normal years.

The change period of sunspots is 1 1 year. The change of annual precipitation in many parts of the earth has a certain correlation with the cycle of sunspot activity, some of which are positive and some are negative.

From 70 to 80 N, the number of sunspots is positively correlated with precipitation.

From 60 to 70 N, the number of sunspots is negatively correlated with precipitation.

From 50 to 60 N, the number of sunspots is sometimes positively correlated with precipitation, and sometimes negatively correlated.

Sunspots are constantly changing, and the precipitation in Quzhou is also constantly changing. When sunspot activity is frequent, some solar radiation becomes stronger and precipitation becomes more frequent; When sunspot activity is weak, this change will cause abnormal climate phenomenon, and the local precipitation will also decrease, indicating that the local area is directly proportional to sunspot activity.