20 13 high temperature weather

Reasons: Compared with previous years, the rainy season in the middle and lower reaches of the Yangtze River has become shorter and sunny days have increased; (2 p

Reasons: Compared with previous years, the rainy season in the middle and lower reaches of the Yangtze River has become shorter and sunny days have increased; (2 points) The intensity of subtropical high is obviously stronger than that of the same period in history, and it lasts for a long time, which leads to the continuous rise of temperature; (2 points) (Abnormal atmospheric circulation) There are fewer typhoons going northward and going inland than in previous years. (2 points)

Harm: It will reduce grain production and make drinking water difficult for people and livestock (2 points), which will affect economic development and social stability. (2 points) (If the answer is reasonable, score as appropriate)

Test and analysis: Combining with the factors affecting the weather in this area, analyze the causes of high temperature. The meiyu weather that affected the area in that year lasted for a short time, with many sunny days and strong solar radiation. The subtropical high is strong and affects a long area, which makes the summer dry weather last for a long time and the temperature rises greatly. There are fewer typhoons affecting this area than in previous years, which is weak in alleviating high temperature weather. Drought will reduce grain production and make drinking water difficult for people and livestock; The lack of water for people's production and life has affected economic development and social stability.