The climate of the great plains

The Great Plains has a continental climate. In most areas, Leng Xia is hot in winter, with little precipitation, low humidity, windy weather and drastic temperature changes. Water vapor mainly comes from the Gulf of Mexico, with less water vapor in the north and west. The annual rainfall in the southern plain is 380? 640 mm ( 15？ 25 inches), the northern plain 12? 15 inch, the eastern edge of Nebraska is 25 inches, and the western edge of Montana is less than 15 inch. Precipitation in southern Canada Great Plains 10? 20 inches, growing period 70? 1 10 days. The average growing period in Texas is 240 days, the border between the United States and Canada 120 days, and the grassland provinces are 70? 1 10 days.

continental climate

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 in Texas. But if it is called Chi—nooks winter warm wind, it is 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.

Weather disaster

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.