The Natural Environment of Changhua Town

Changhua Town belongs to subtropical monsoon region, with warm and humid climate, abundant sunshine and rainfall, and distinct four seasons. Due to the ups and downs of the terrain, the climate in the town varies greatly in the vertical direction. Among the four seasons, spring and autumn are short, summer and winter are long, with obvious seasonal characteristics. According to the standard of dividing the four seasons, the average daily temperature in 30 years is less than 10℃ in winter, more than 22℃ in summer and 10-20℃ in spring and autumn. Spring: it starts on April 2 and ends on May 25, with a season of 63 days. Cold and warm air alternates frequently, the weather is changeable and the temperature fluctuates greatly. It rains for 33 days throughout the year, with the rainfall of 290-300mm, accounting for 2 1% of the annual rainfall, with occasional rainy days.

Summer: it starts on June 4th and ends on September 14, with one season 103 days. There are early summer and midsummer. Early summer is rainy season. At this time, the temperature is high, the humidity is high, the rain is continuous, and the rainfall is concentrated. On average, there are 1-2 rainstorms every year, and rainstorms also occur from time to time, causing floods. Midsummer is a drought and typhoon season controlled by subtropical high. Except for some thunderstorms, the weather is sunny and hot, the temperature is high, the sunshine is sufficient, and the evaporation is large. The drought lasted for 20-30 days, with 54 days of rainfall, and the rainfall was 660-670 mm, accounting for 47% of the annual rainfall.

Autumn: it starts on September 15 and ends on October 1 13, with a season of 60 days. High-altitude warm high pressure and ground cold high pressure are superimposed, and the gas layer is particularly stable, resulting in crisp autumn weather. There are 24 rainy days in this season, and the rainfall is about 180mm, accounting for 13% of the annual rainfall.

Winter: from 1 65438+1October 14 to April1the following year, the season length is 139 days. The weather is dry and cold, and the minimum temperature drops below 0℃. In the season, when the cold air broke out in the north and went south, and the cold air was powerful, the cold wave suddenly occurred, bringing severe freezing weather. There is heavy snow in this town most of the winter. There are 50 rainy days in this season, and the rainfall is about 290 mm, accounting for 20% of the annual rainfall.