How does the topography of the central United States affect the climate?

The topography of the central part of the United States is the Central Plains, the eastern part is plateau and the western part is mountainous, with high sides and low middle. In winter, the cold air from the Arctic Ocean can go south, which has a large influence range and intensity, making the winter temperature in the central United States low and heavy snow falling. In summer, humid air from the Gulf of Mexico can go northward smoothly, bringing a lot of rainfall to the United States, and there are often strong convective weather such as tornado weather. In short, the topography of the central United States has expanded the scope of temperate continental climate.

There is a coastal plain on the east coast of the United States, which is wide in the south and narrow in the north. There are no coastal plains in northern New Jersey, but there are some glacial sedimentary plains in Long Island and other places. Behind the coastal plain is a hilly area with undulating terrain, extending all the way to the Appalachian Mountains in North Carolina and New Hampshire, with an altitude of 1, 830 meters. To the west of the Appalachian Mountains is the inner plain of the Midwest of the United States, which is relatively flat. The Great Lakes and the Mississippi River Basin, the fourth largest river in the world, are also located here. To the west of the Mississippi River, the topography of the internal plain began to rise, and finally it entered the great plain with a vast area and few topographical features in the central United States. In the west of the Great Plains, there are towering Rocky Mountains.

Most parts of the United States have a continental climate, while the south has a subtropical climate. The temperature difference between the central and northern plains is very large. The average temperature in Chicago is MINUS 3 degrees in June and 24 degrees in July. 65438+ 10, the average temperature along the coast of the Gulf of Mexico is 1 1℃, and it is 28℃ in July.