Influence of topography on climate in North America

There are high mountains in the west of North America, and the water vapor in the Pacific Ocean is not easy to penetrate eastward, and the low mountains and plateaus in the east do not block the water vapor in the Atlantic Ocean. Therefore, the precipitation in North America mainly comes from the Atlantic Ocean, with the annual precipitation decreasing from east to west and increasing year by year along the Pacific coast. Central plains of North America, with gentle north and south. Cold air from the north may push south in winter, and warm air from the south may push north in summer, thus raising the temperature in North America and aggravating the continental characteristics of the climate in North America.

Because the western mountains are mostly north-south, humid air from the Pacific Ocean can only reach the coastal areas of the western Pacific Ocean. Form a long and narrow temperate maritime climate.

The central part is a vast plain, flat and open; To the east is a low highland. In winter, the polar cold air from the south of the Arctic Ocean reaches the coast of the Gulf of Mexico, causing snowstorms and cold waves; In summer, the warm and humid air flow from the Gulf of Mexico can move northward freely, which makes the central and eastern parts generally warm and hot, resulting in a wide range of high temperature and rainy weather, which intensifies the continental climate characteristics of the North American continent. A large-scale temperate continental climate has been formed.

Central North America is a plain. Cold air from the Arctic can go south in winter and water vapor from the Gulf of Mexico can go north in summer. Therefore, the temperature in North America is relatively high throughout the year, and extreme weather such as tornadoes often occurs in summer.

The terrain east of Mount Loki inclines to the southeast, so the Mississippi River, the fourth largest river in the world, flows into the Gulf of Mexico from north to south.