Climatic characteristics of the great plains of the United States

The climate belongs to semi-arid continental climate, and Leng Xia is hot in winter. When there is a cold wave in winter,

The temperature can drop a lot, and severe frost can be distributed to Texas. But if we call Chi-nooks warm air in winter, it will be extremely beneficial to agriculture and animal husbandry. In winter and spring, this kind of wind often blows to the southeast, the ice and snow melt and the temperature rises, which is beneficial to livestock grazing. However, when the winter wind, which is called snowstorm, strikes, storms are produced, accompanied by heavy snow, which brings great disasters to animal husbandry. In summer, it is very hot during the day and very cold at night, with great temperature difference. Compared with the hottest month of the year, the temperature difference in Leng Yue is over 33℃. The annual precipitation is less than 500 mm, and the local, seasonal and interannual changes are considerable, which poses a great threat to the stability of agricultural production. On the great plains, the main types of weather disasters are as follows: 1, drought: with certain periodic changes; 2. Sandstorms: There are many sandstorms due to the drought and loose land and the violent disturbance of strong wind and airflow; 3. Floods: Especially in summer, due to the influence of heavy rain, drainage in plain areas is difficult and floods occur from time to time; 4. Lu Longjuan: It will happen frequently every year since April. Although it is local, it is extremely destructive. Rivers on the plains basically originate in the Rocky Mountains, cross the plains from west to east, and finally flow into the Mississippi River. The famous rivers are Missouri, Pratt and Arkansas.